[TOC]
# HTMLDOM基础知识
> 通过 HTML DOM， JavaScript 能够访问 HTML 文档中的每个元素。
DOM 是 Document Object Model（文档对象模型）的缩写。
学习`HTML DOM`作为基础，以后学习和理解`JavaScript`会非常容易。
DOM 定义了访问 HTML 和 XML 文档的标准：
“W3C 文档对象模型 （DOM） 是中立于平台和语言的接口，它允许程序和脚本动态地访问和更新文档的内容、结构和样式。”
W3C DOM 标准被分为 3 个不同的部分：
- 核心 DOM - 针对任何结构化文档的标准模型
- XML DOM - 针对 XML 文档的标准模型
- HTML DOM - 针对 HTML 文档的标准模型
`HTML DOM` 定义了所有 `HTML` `元素`的`对象`和`属性`，以及访问它们的`方法`。
`HTML DOM` 是关于如何获取、修改、添加或删除 HTML 元素的标准。
## `节点`与`节点树`概念
在 HTML DOM 中，所有事物都是`节点`。DOM 是被视为节点树的 HTML。
节点与节点之间的关系可以是： `父子关系(上下层)`、`兄弟关系(同层)`。
最顶层的节点叫做`根节点(root)`，他没有父节点和兄弟节点。
节点和节点树说的是对`HTML文档`的数据结构的抽象`存储结构`。
而具体的`对象` 在`节点`存储结构基础上实现的操作方法封装。
## 属性Attributes对象
在`HTML DOM`中， 属性对象是属于一个`HTML元素`，包含了属性`name`、`value`属性和两个状态判断属性`isId`、`specified`。
属性的访问和处理函数有哪些呢？对于属性的操作是使用`NamedNodeMap`对象来完成的。下面了解下`NNM`吧。
### NamedNodeMap(NNM)对象
NNM 对象表示一个元素属性节点的无序集合。在NNM中的节点可以通过`name`和`index(数字序号)`访问。
NNM对象的属性和方法如下：
|Property / Method |Description |
| :----| :----------|
|attr.isId |判断属性是否是Id，True表示是，False表示不是，目前浏览器都删除对此属性的支持|
|`attr.name` | 查看属性名称 |
|attr.value | 设置或者查看属性值 |
|attr.specified |查明是否已指定属性,True表示已指定或已创建但尚未附加到元素，False表示未指定 |
|||
|nodemap.getNamedItem() |获取指定的属性节点|
|nodemap.item() |返回NamedNodeMap上指定序号的属性节点|
|nodemap.length |返回NamedNodeMap上属性的节点数量|
|nodemap.removeNamedItem() |删除Removes a specified attribute node |
|nodemap.setNamedItem() |Sets the specified attribute node (by name) |
示例：
```HTML
<html>
<body>
<p id="intro" class="test" >Hello World!</p>
<script>
//var txt=document.getElementById("intro").innerHTML;
var p=document.getElementById("intro");
var txt=p.attributes.getNamedItem('id').value
document.write(txt);
//获取<p>元素的第一个属性的名称：
var x = document.getElementById("intro").attributes.item(0).nodeName;
document.write('<br>' + x)
</script>
</body>
</html>
```
页面执行结果：
```
Hello World!
intro
id
```
## HTMLDOM的Document对象
> 当HTML文档被加载到Web浏览器时 就在浏览器中变成了一个`document`对象， `document`对象就是这个`HTML`文档节点树的根节点。 操作`document`对象就是在操作这个节点树。
### document对象的属性和方法
|Property / Method |Description |
| :----| :--------------|
|activeElement |Returns the currently focused element in the document |
|addEventListener() |Attaches an event handler to the document |
|adoptNode() |Adopts a node from another document |
|anchors |Returns a collection of all \<a> elements in the document that have a name attribute |
|applets |Returns a collection of all \<applet> elements in the document |
|baseURI |Returns the absolute base URI of a document |
|body |Sets or returns the document's body (the \<body> element) |
|close() |Closes the output stream previously opened with document.open() |
|cookie |Returns all name/value pairs of cookies in the document |
|charset |Deprecated. Use characterSet instead. Returns the character encoding for the document |
|characterSet |Returns the character encoding for the document |
|createAttribute() |Creates an attribute node |
|createComment() |Creates a Comment node with the specified text |
|createDocumentFragment() |Creates an empty DocumentFragment node |
|createElement() |Creates an Element node |
|createEvent() |Creates a new event |
|createTextNode() |Creates a Text node |
|defaultView |Returns the window object associated with a document, or null if none is available. |
|designMode |Controls whether the entire document should be editable or not. |
|doctype |Returns the Document Type Declaration associated with the document |
|documentElement |Returns the Document Element of the document (the \<html> element) |
|documentMode |Returns the mode used by the browser to render the document |
|documentURI |Sets or returns the location of the document |
|domain |Returns the domain name of the server that loaded the document |
|domConfig |Obsolete. Returns the DOM configuration of the document |
|embeds |Returns a collection of all \<embed> elements the document |
|execCommand() |Invokes the specified clipboard operation on the element currently having focus. |
|forms |Returns a collection of all \<form> elements in the document |
|fullscreenElement |Returns the current element that is displayed in fullscreen mode |
|fullscreenEnabled() |Returns a Boolean value indicating whether the document can be viewed in fullscreen mode |
|getElementById() |Returns the element that has the ID attribute with the specified value |
|getElementsByClassName() |Returns a HTMLCollection containing all elements with the specified class name |
|getElementsByName() |Returns a HTMLCollection containing all elements with a specified name |
|getElementsByTagName() |Returns a HTMLCollection containing all elements with the specified tag name |
|hasFocus() |Returns a Boolean value indicating whether the document has focus |
|head |Returns the \<head> element of the document |
|images |Returns a collection of all \<img> elements in the document |
|implementation |Returns the DOMImplementation object that handles this document |
|importNode() |Imports a node from another document |
|inputEncoding |Returns the encoding, character set, used for the document |
|lastModified |Returns the date and time the document was last modified |
|links |Returns a collection of all \<a> and \<area> elements in the document that have a href attribute |
|normalize() |Removes empty Text nodes, and joins adjacent nodes |
|normalizeDocument() |Removes empty Text nodes, and joins adjacent nodes |
|open() |Opens an HTML output stream to collect output from document.write() |
|querySelector() |Returns the first element that matches a specified CSS selector(s) in the document |
|querySelectorAll() |Returns a static NodeList containing all elements that matches a specified CSS selector(s) in the document |
|readyState |Returns the (loading) status of the document |
|referrer |Returns the URL of the document that loaded the current document |
|removeEventListener() |Removes an event handler from the document (that has been attached with the addEventListener() method) |
|renameNode() |Renames the specified node |
|scripts |Returns a collection of \<script> elements in the document |
|strictErrorChecking |Sets or returns whether error-checking is enforced or not |
|title |Sets or returns the title of the document |
|URL |Returns the full URL of the HTML document |
|write() |Writes HTML expressions or JavaScript code to a document |
|writeln() |Same as write(), but adds a newline character after each statement |
## `Element`元素对象
> `Element`对象表示的是`HTML`页面的元素，例如 `p`,`input`,`DIV`等等其他任何HTML元素。
### `Element`元素对象的属性和方法
> 下面属性和方法适用于所有的`HTML`元素
|Property / Method |Description |
| :----| :--------------|
|accessKey |Sets or returns the accesskey attribute of an element |
|addEventListener() |Attaches an event handler to the specified element |
|appendChild() |Adds a new child node, to an element, as the last child node |
|attributes |Returns a NamedNodeMap of an element's attributes |
|blur() |Removes focus from an element |
|childElementCount |Returns the number of child elements an element has |
|childNodes |Returns a collection of an element's child nodes (including text and comment nodes) |
|children |Returns a collection of an element's child element (excluding text and comment nodes) |
|classList |Returns the class name(s) of an element |
|className |Sets or returns the value of the class attribute of an element |
|click() |Simulates a mouse-click on an element |
|clientHeight |Returns the height of an element, including padding |
|clientLeft |Returns the width of the left border of an element |
|clientTop |Returns the width of the top border of an element |
|clientWidth |Returns the width of an element, including padding |
|cloneNode() |Clones an element |
|compareDocumentPosition() |Compares the document position of two elements |
|contains() |Returns true if a node is a descendant of a node, otherwise false |
|contentEditable |Sets or returns whether the content of an element is editable or not |
|dir |Sets or returns the value of the dir attribute of an element |
|exitFullscreen() |Cancels an element in fullscreen mode |
|firstChild |Returns the first child node of an element |
|firstElementChild |Returns the first child element of an element |
|focus() |Gives focus to an element |
|getAttribute() |Returns the specified attribute value of an element node |
|getAttributeNode() |Returns the specified attribute node |
|getBoundingClientRect() |Returns the size of an element and its position relative to the viewport |
|getElementsByClassName() |Returns a collection of all child elements with the specified class name |
|getElementsByTagName() |Returns a collection of all child elements with the specified tag name |
|hasAttribute() |Returns true if an element has the specified attribute, otherwise false |
|hasAttributes() |Returns true if an element has any attributes, otherwise false |
|hasChildNodes() |Returns true if an element has any child nodes, otherwise false |
|id |Sets or returns the value of the id attribute of an element |
|innerHTML |Sets or returns the content of an element |
|innerText |Sets or returns the text content of a node and its descendants |
|insertAdjacentElement() |Inserts a HTML element at the specified position relative to the current element |
|insertAdjacentHTML() |Inserts a HTML formatted text at the specified position relative to the current element |
|insertAdjacentText() |Inserts text into the specified position relative to the current element |
|insertBefore() |Inserts a new child node before a specified, existing, child node |
|isContentEditable |Returns true if the content of an element is editable, otherwise false |
|isDefaultNamespace() |Returns true if a specified namespaceURI is the default, otherwise false |
|isEqualNode() |Checks if two elements are equal |
|isSameNode() |Checks if two elements are the same node |
|isSupported() |Returns true if a specified feature is supported on the element |
|lang |Sets or returns the value of the lang attribute of an element |
|lastChild |Returns the last child node of an element |
|lastElementChild |Returns the last child element of an element |
|namespaceURI |Returns the namespace URI of an element |
|nextSibling |Returns the next node at the same node tree level |
|nextElementSibling |Returns the next element at the same node tree level |
|nodeName |Returns the name of a node |
|nodeType |Returns the node type of a node |
|nodeValue |Sets or returns the value of a node |
|normalize() |Joins adjacent text nodes and removes empty text nodes in an element |
|offsetHeight |Returns the height of an element, including padding, border and scrollbar |
|offsetWidth |Returns the width of an element, including padding, border and scrollbar |
|offsetLeft |Returns the horizontal offset position of an element |
|offsetParent |Returns the offset container of an element |
|offsetTop |Returns the vertical offset position of an element |
|outerHTML |Sets or returns the content of an element (including the start tag and the end tag) |
|outerText |Sets or returns the outer text content of a node and its descendants |
|ownerDocument |Returns the root element (document object) for an element |
|parentNode |Returns the parent node of an element |
|parentElement |Returns the parent element node of an element |
|previousSibling |Returns the previous node at the same node tree level |
|previousElementSibling |Returns the previous element at the same node tree level |
|querySelector() |Returns the first child element that matches a specified CSS selector(s) of an element |
|querySelectorAll() |Returns all child elements that matches a specified CSS selector(s) of an element |
|remove() |Removes the element from the DOM |
|removeAttribute() |Removes a specified attribute from an element |
|removeAttributeNode() |Removes a specified attribute node, and returns the removed node |
|removeChild() |Removes a child node from an element |
|removeEventListener() |Removes an event handler that has been attached with the addEventListener() method |
|replaceChild() |Replaces a child node in an element |
|requestFullscreen() |Shows an element in fullscreen mode |
|scrollHeight |Returns the entire height of an element, including padding |
|scrollIntoView() |Scrolls the specified element into the visible area of the browser window |
|scrollLeft |Sets or returns the number of pixels an element's content is scrolled horizontally |
|scrollTop |Sets or returns the number of pixels an element's content is scrolled vertically |
|scrollWidth |Returns the entire width of an element, including padding |
|setAttribute() |Sets or changes the specified attribute, to the specified value |
|setAttributeNode() |Sets or changes the specified attribute node |
|style |Sets or returns the value of the style attribute of an element |
|tabIndex |Sets or returns the value of the tabindex attribute of an element |
|tagName |Returns the tag name of an element |
|textContent |Sets or returns the textual content of a node and its descendants |
|title |Sets or returns the value of the title attribute of an element |
|toString() |Converts an element to a string |
## HTMLDOM的Events事件对象
`HTML DOM`事件允许 `JavaScript` 在HTML文档中的元素上注册不同的事件处理程序。
事件通常与功能结合使用，并且在事件发生之前（例如，用户单击按钮时）不会执行该功能。
|Event |Description |Belongs To |
| :----| :---------------| :----|
|abort |The event occurs when the loading of a media is aborted |UiEvent, Event |
|afterprint |The event occurs when a page has started printing, or if the print dialogue box has been closed |Event |
|animationend |The event occurs when a CSS animation has completed |AnimationEvent |
|animationiteration |The event occurs when a CSS animation is repeated |AnimationEvent |
|animationstart |The event occurs when a CSS animation has started |AnimationEvent |
|beforeprint |The event occurs when a page is about to be printed |Event |
|beforeunload |The event occurs before the document is about to be unloaded |UiEvent, Event |
|blur |The event occurs when an element loses focus |FocusEvent |
|canplay |The event occurs when the browser can start playing the media (when it has buffered enough to begin) |Event |
|canplaythrough |The event occurs when the browser can play through the media without stopping for buffering |Event |
|change |The event occurs when the content of a form element, the selection, or the checked state have changed (for \<input>, \<select>, and \<textarea>) |Event |
|click |The event occurs when the user clicks on an element |MouseEvent |
|contextmenu |The event occurs when the user right-clicks on an element to open a context menu |MouseEvent |
|copy |The event occurs when the user copies the content of an element |ClipboardEvent |
|cut |The event occurs when the user cuts the content of an element |ClipboardEvent |
|dblclick |The event occurs when the user double-clicks on an element |MouseEvent |
|drag |The event occurs when an element is being dragged |DragEvent |
|dragend |The event occurs when the user has finished dragging an element |DragEvent |
|dragenter |The event occurs when the dragged element enters the drop target |DragEvent |
|dragleave |The event occurs when the dragged element leaves the drop target |DragEvent |
|dragover |The event occurs when the dragged element is over the drop target |DragEvent |
|dragstart |The event occurs when the user starts to drag an element |DragEvent |
|drop |The event occurs when the dragged element is dropped on the drop target |DragEvent |
|durationchange |The event occurs when the duration of the media is changed |Event |
|ended |The event occurs when the media has reach the end (useful for messages like "thanks for listening") |Event |
|error |The event occurs when an error occurs while loading an external file |ProgressEvent, UiEvent, Event |
|focus |The event occurs when an element gets focus |FocusEvent |
|focusin |The event occurs when an element is about to get focus |FocusEvent |
|focusout |The event occurs when an element is about to lose focus |FocusEvent |
|fullscreenchange |The event occurs when an element is displayed in fullscreen mode |Event |
|fullscreenerror |The event occurs when an element can not be displayed in fullscreen mode |Event |
|hashchange |The event occurs when there has been changes to the anchor part of a URL |HashChangeEvent |
|input |The event occurs when an element gets user input |InputEvent, Event |
|invalid |The event occurs when an element is invalid |Event |
|keydown |The event occurs when the user is pressing a key |KeyboardEvent |
|keypress |The event occurs when the user presses a key |KeyboardEvent |
|keyup |The event occurs when the user releases a key |KeyboardEvent |
|load |The event occurs when an object has loaded |UiEvent, Event |
|loadeddata |The event occurs when media data is loaded |Event |
|loadedmetadata |The event occurs when meta data (like dimensions and duration) are loaded |Event |
|loadstart |The event occurs when the browser starts looking for the specified media |ProgressEvent |
|message |The event occurs when a message is received through the event source |Event |
|mousedown |The event occurs when the user presses a mouse button over an element |MouseEvent |
|mouseenter |The event occurs when the pointer is moved onto an element |MouseEvent |
|mouseleave |The event occurs when the pointer is moved out of an element |MouseEvent |
|mousemove |The event occurs when the pointer is moving while it is over an element |MouseEvent |
|mouseover |The event occurs when the pointer is moved onto an element, or onto one of its children |MouseEvent |
|mouseout |The event occurs when a user moves the mouse pointer out of an element, or out of one of its children |MouseEvent |
|mouseup |The event occurs when a user releases a mouse button over an element |MouseEvent |
|mousewheel |Deprecated. Use the wheel event instead |WheelEvent |
|offline |The event occurs when the browser starts to work offline |Event |
|online |The event occurs when the browser starts to work online |Event |
|open |The event occurs when a connection with the event source is opened |Event |
|pagehide |The event occurs when the user navigates away from a webpage |PageTransitionEvent |
|pageshow |The event occurs when the user navigates to a webpage |PageTransitionEvent |
|paste |The event occurs when the user pastes some content in an element |ClipboardEvent |
|pause |The event occurs when the media is paused either by the user or programmatically |Event |
|play |The event occurs when the media has been started or is no longer paused |Event |
|playing |The event occurs when the media is playing after having been paused or stopped for buffering |Event |
|popstate |The event occurs when the window's history changes |PopStateEvent |
|progress |The event occurs when the browser is in the process of getting the media data (downloading the media) |Event |
|ratechange |The event occurs when the playing speed of the media is changed |Event |
|resize |The event occurs when the document view is resized |UiEvent, Event |
|reset |The event occurs when a form is reset |Event |
|scroll |The event occurs when an element's scrollbar is being scrolled |UiEvent, Event |
|search |The event occurs when the user writes something in a search field (for \<input="search">) |Event |
|seeked |The event occurs when the user is finished moving/skipping to a new position in the media |Event |
|seeking |The event occurs when the user starts moving/skipping to a new position in the media |Event |
|select |The event occurs after the user selects some text (for \<input> and \<textarea>) |UiEvent, Event |
|show |The event occurs when a \<menu> element is shown as a context menu |Event |
|stalled |The event occurs when the browser is trying to get media data, but data is not available |Event |
|storage |The event occurs when a Web Storage area is updated |StorageEvent |
|submit |The event occurs when a form is submitted |Event |
|suspend |The event occurs when the browser is intentionally not getting media data |Event |
|timeupdate |The event occurs when the playing position has changed (like when the user fast forwards to a different point in the media) |Event |
|toggle |The event occurs when the user opens or closes the \<details> element |Event |
|touchcancel |The event occurs when the touch is interrupted |TouchEvent |
|touchend |The event occurs when a finger is removed from a touch screen |TouchEvent |
|touchmove |The event occurs when a finger is dragged across the screen |TouchEvent |
|touchstart |The event occurs when a finger is placed on a touch screen |TouchEvent |
|transitionend |The event occurs when a CSS transition has completed |TransitionEvent |
|unload |The event occurs once a page has unloaded (for \<body>) |UiEvent, Event |
|volumechange |The event occurs when the volume of the media has changed (includes setting the volume to "mute") |Event |
|waiting |The event occurs when the media has paused but is expected to resume (like when the media pauses to buffer more data) |Event |
|wheel |The event occurs when the mouse wheel rolls up or down over an element |WheelEvent |
### HTMLDOM的Event事件对象的属性和方法
|Property/Method |Description |Belongs To |
| :----| :---------------| :----|
|altKey |Returns whether the "ALT" key was pressed when the mouse event was triggered |MouseEvent |
|altKey |Returns whether the "ALT" key was pressed when the key event was triggered |KeyboardEvent, TouchEvent |
|animationName |Returns the name of the animation |AnimationEvent |
|bubbles |Returns whether or not a specific event is a bubbling event |Event |
|button |Returns which mouse button was pressed when the mouse event was triggered |MouseEvent |
|buttons |Returns which mouse buttons were pressed when the mouse event was triggered |MouseEvent |
|cancelable |Returns whether or not an event can have its default action prevented |Event |
|charCode |Returns the Unicode character code of the key that triggered the onkeypress event |KeyboardEvent |
|changeTouches |Returns a list of all the touch objects whose state changed between the previous touch and this touch |TouchEvent |
|clientX |Returns the horizontal coordinate of the mouse pointer, relative to the current window, when the mouse event was triggered |MouseEvent, TouchEvent |
|clientY |Returns the vertical coordinate of the mouse pointer, relative to the current window, when the mouse event was triggered |MouseEvent, TouchEvent |
|clipboardData |Returns an object containing the data affected by the clipboard operation |ClipboardData |
|code |Returns the code of the key that triggered the event |KeyboardEvent |
|composed |Returns whether the event is composed or not |Event |
|createEvent() |Creates a new event |Event |
|ctrlKey |Returns whether the "CTRL" key was pressed when the mouse event was triggered |MouseEvent |
|ctrlKey |Returns whether the "CTRL" key was pressed when the key event was triggered |KeyboardEvent, TouchEvent |
|currentTarget |Returns the element whose event listeners triggered the event |Event |
|data |Returns the inserted characters |InputEvent |
|dataTransfer |Returns an object containing the data being dragged/dropped, or inserted/deleted |DragEvent, InputEvent |
|defaultPrevented |Returns whether or not the preventDefault() method was called for the event |Event |
|deltaX |Returns the horizontal scroll amount of a mouse wheel (x-axis) |WheelEvent |
|deltaY |Returns the vertical scroll amount of a mouse wheel (y-axis) |WheelEvent |
|deltaZ |Returns the scroll amount of a mouse wheel for the z-axis |WheelEvent |
|deltaMode |Returns a number that represents the unit of measurements for delta values (pixels, lines or pages) |WheelEvent |
|detail |Returns a number that indicates how many times the mouse was clicked |UiEvent |
|elapsedTime |Returns the number of seconds an animation has been running |AnimationEvent |
|elapsedTime |Returns the number of seconds a transition has been running | |
|eventPhase |Returns which phase of the event flow is currently being evaluated |Event |
|getTargetRanges() |Returns an array containing target ranges that will be affected by the insertion/deletion |InputEvent |
|getModifierState() |Returns an array containing target ranges that will be affected by the insertion/deletion |MouseEvent |
|inputType |Returns the type of the change (i.e "inserting" or "deleting") |InputEvent |
|isComposing |Returns whether the state of the event is composing or not |InputEvent, KeyboardEvent |
|isTrusted |Returns whether or not an event is trusted |Event |
|key |Returns the key value of the key represented by the event |KeyboardEvent |
|key |Returns the key of the changed storage item |StorageEvent |
|keyCode |Returns the Unicode character code of the key that triggered the onkeypress event, or the Unicode key code of the key that triggered the onkeydown or onkeyup event |KeyboardEvent |
|location |Returns the location of a key on the keyboard or device |KeyboardEvent |
|lengthComputable |Returns whether the length of the progress can be computable or not |ProgressEvent |
|loaded |Returns how much work has been loaded |ProgressEvent |
|metaKey |Returns whether the "META" key was pressed when an event was triggered |MouseEvent |
|metaKey |Returns whether the "meta" key was pressed when the key event was triggered |KeyboardEvent, TouchEvent |
|MovementX |Returns the horizontal coordinate of the mouse pointer relative to the position of the last mousemove event |MouseEvent |
|MovementY |Returns the vertical coordinate of the mouse pointer relative to the position of the last mousemove event |MouseEvent |
|newValue |Returns the new value of the changed storage item |StorageEvent |
|newURL |Returns the URL of the document, after the hash has been changed |HasChangeEvent |
|offsetX |Returns the horizontal coordinate of the mouse pointer relative to the position of the edge of the target element |MouseEvent |
|offsetY |Returns the vertical coordinate of the mouse pointer relative to the position of the edge of the target element |MouseEvent |
|oldValue |Returns the old value of the changed storage item |StorageEvent |
|oldURL |Returns the URL of the document, before the hash was changed |HasChangeEvent |
|onemptied |The event occurs when something bad happens and the media file is suddenly unavailable (like unexpectedly disconnects) | |
|pageX |Returns the horizontal coordinate of the mouse pointer, relative to the document, when the mouse event was triggered |MouseEvent |
|pageY |Returns the vertical coordinate of the mouse pointer, relative to the document, when the mouse event was triggered |MouseEvent |
|persisted |Returns whether the webpage was cached by the browser |PageTransitionEvent |
|preventDefault() |Cancels the event if it is cancelable, meaning that the default action that belongs to the event will not occur |Event |
|propertyName |Returns the name of the CSS property associated with the animation or transition |AnimationEvent, TransitionEvent |
|pseudoElement |Returns the name of the pseudo-element of the animation or transition |AnimationEvent, TransitionEvent |
|region | |MouseEvent |
|relatedTarget |Returns the element related to the element that triggered the mouse event |MouseEvent |
|relatedTarget |Returns the element related to the element that triggered the event |FocusEvent |
|repeat |Returns whether a key is being hold down repeatedly, or not |KeyboardEvent |
|screenX |Returns the horizontal coordinate of the mouse pointer, relative to the screen, when an event was triggered |MouseEvent |
|screenY |Returns the vertical coordinate of the mouse pointer, relative to the screen, when an event was triggered |MouseEvent |
|shiftKey |Returns whether the "SHIFT" key was pressed when an event was triggered |MouseEvent |
|shiftKey |Returns whether the "SHIFT" key was pressed when the key event was triggered |KeyboardEvent, TouchEvent |
|state |Returns an object containing a copy of the history entries |PopStateEvent |
|stopImmediatePropagation() |Prevents other listeners of the same event from being called |Event |
|stopPropagation() |Prevents further propagation of an event during event flow |Event |
|storageArea |Returns an object representing the affected storage object |StorageEvent |
|target |Returns the element that triggered the event |Event |
|targetTouches |Returns a list of all the touch objects that are in contact with the surface and where the touchstart event occured on the same target element as the current target element |TouchEvent |
|timeStamp |Returns the time (in milliseconds relative to the epoch) at which the event was created |Event |
|total |Returns the total amount of work that will be loaded |ProgressEvent |
|touches |Returns a list of all the touch objects that are currently in contact with the surface |TouchEvent |
|transitionend |The event occurs when a CSS transition has completed |TransitionEvent |
|type |Returns the name of the event |Event |
|url |Returns the URL of the changed item's document |StorageEvent |
|which |Returns which mouse button was pressed when the mouse event was triggered |MouseEvent |
|which |Returns the Unicode character code of the key that triggered the onkeypress event, or the Unicode key code of the key that triggered the onkeydown or onkeyup event |KeyboardEvent |
|view |Returns a reference to the Window object where the event occurred |UiEvent |
### 关于事件对象
> 当HTML中发生事件时，该事件属于某个事件对象，例如，鼠标单击事件属于MouseEvent对象。
所有事件对象均基于`Event`事件对象，并继承其所有属性和方法。
#### 基于`Event`事件对象事件的常见事件对象
这些是最常见的事件对象：
|Event Object |Description |
| :----| :---------|
|AnimationEvent |For CSS animations |
|ClipboardEvent |For modification of the clipboard |
|DragEvent |For drag and drop interaction |
|FocusEvent |For focus-related events |
|HashChangeEvent |For changes in the anchor part of the URL |
|InputEvent |For user input |
|KeyboardEvent |For keyboard interaction |
|MouseEvent |For mouse interaction |
|PageTransitionEvent |For navigating to, and away from, web pages |
|PopStateEvent |For changes in the history entry |
|ProgressEvent |For the progress of loading external resources |
|StorageEvent |For changes in the window's storage area. |
|TouchEvent |For touch interaction |
|TransitionEvent |For CSS transitions |
|UiEvent |For user interface interaction |
|WheelEvent |For mousewheel interaction |
## `HTML DOM`Collection集合对象
`HTMLCollection`对象是HTML元素的类似数组的列表。
诸如 `getElementsByTagName（）`之类的方法将返回`HTMLCollection`。
### HTML集合的属性和方法
可以在HTMLCollection对象上使用以下属性和方法：
|Property / Method |Description |
| :----| :------------|
|item() |Returns the element at the specified index in an HTMLCollection |
|length |Returns the number of elements in an HTMLCollection |
|namedItem() |Returns the element with the specified ID, or name, in an HTMLCollection |
**示例： 循环遍历HTMLCollection中的每个元素：**
```JavaScript
x = document.getElementsByTagName("P");
l = x.length;
for (i = 0; i < l; i++) {
document.write(x[i].tagName + "<br>");
}
```
## `location`位置对象
位置对象包含有关当前`URL`的信息。
location对象是window对象的一部分，可以通过window.location属性进行访问。
注意：没有适用于位置对象的公共标准，但是所有主流浏览器都支持它。
### 位置对象属性
|Property |Description |
| :----| :-----------|
|hash |Sets or returns the anchor part (#) of a URL |
|host |Sets or returns the hostname and port number of a URL |
|hostname |Sets or returns the hostname of a URL |
|href |Sets or returns the entire URL |
|origin |Returns the protocol, hostname and port number of a URL |
|pathname |Sets or returns the path name of a URL |
|port |Sets or returns the port number of a URL |
|protocol |Sets or returns the protocol of a URL |
|search |Sets or returns the querystring part of a URL |
### 定位对象方法
|Method |Description |
| :----| :--------|
|assign() |Loads a new document |
|reload() |Reloads the current document |
|replace() |Replaces the current document with a new one |
## 导航器对象
导航器对象包含有关浏览器的信息。
注意：没有适用于导航器对象的公共标准，但是所有主要的浏览器都支持它。
### 导航器对象属性
|Property |Description |
| :----| :--------------|
|appCodeName |Returns the code name of the browser |
|appName |Returns the name of the browser |
|appVersion |Returns the version information of the browser |
|cookieEnabled |Determines whether cookies are enabled in the browser |
|geolocation |Returns a Geolocation object that can be used to locate the user's position |
|language |Returns the language of the browser |
|onLine |Determines whether the browser is online |
|platform |Returns for which platform the browser is compiled |
|product |Returns the engine name of the browser |
|userAgent |Returns the user-agent header sent by the browser to the server |
### 导航器对象方法
|Method |Description |
| :----| :-------------|
|javaEnabled() | 指定浏览器是否启用了Java支持 |
|taintEnabled() |`Removed in JavaScript version 1.2.` 指定浏览器是否启用了数据污染 |
## 屏幕对象
屏幕对象包含有关访客屏幕的信息。
注意：没有适用于屏幕对象的公共标准，但是所有主要的浏览器都支持它。
### 屏幕对象属性
|Property |Description |
| :----| :------------|
|availHeight |Returns the height of the screen (excluding the Windows Taskbar) |
|availWidth |Returns the width of the screen (excluding the Windows Taskbar) |
|colorDepth |Returns the bit depth of the color palette for displaying images |
|height |Returns the total height of the screen |
|pixelDepth |Returns the color resolution (in bits per pixel) of the screen |
|width |Returns the total width of the screen |
## HTMLDOM的Style样式对象
Style对象代表单个样式声明。
### 样式对象属性
“ CSS”列指示该属性在哪个CSS版本中定义（CSS1，CSS2或CSS3）。
|Property |Description |CSS |
| :------| :---------------| :---|
|alignContent |Sets or returns the alignment between the lines inside a flexible container when the items do not use all available space |3 |
|alignItems |Sets or returns the alignment for items inside a flexible container |3 |
|alignSelf |Sets or returns the alignment for selected items inside a flexible container |3 |
|animation |A shorthand property for all the animation properties below, except the animationPlayState property |3 |
|animationDelay |Sets or returns when the animation will start |3 |
|animationDirection |Sets or returns whether or not the animation should play in reverse on alternate cycles |3 |
|animationDuration |Sets or returns how many seconds or milliseconds an animation takes to complete one cycle |3 |
|animationFillMode |Sets or returns what values are applied by the animation outside the time it is executing |3 |
|animationIterationCount |Sets or returns the number of times an animation should be played |3 |
|animationName |Sets or returns a name for the @keyframes animation |3 |
|animationTimingFunction |Sets or returns the speed curve of the animation |3 |
|animationPlayState |Sets or returns whether the animation is running or paused |3 |
|background |Sets or returns all the background properties in one declaration |1 |
|backgroundAttachment |Sets or returns whether a background-image is fixed or scrolls with the page |1 |
|backgroundColor |Sets or returns the background-color of an element |1 |
|backgroundImage |Sets or returns the background-image for an element |1 |
|backgroundPosition |Sets or returns the starting position of a background-image |1 |
|backgroundRepeat |Sets or returns how to repeat (tile) a background-image |1 |
|backgroundClip |Sets or returns the painting area of the background |3 |
|backgroundOrigin |Sets or returns the positioning area of the background images |3 |
|backgroundSize |Sets or returns the size of the background image |3 |
|backfaceVisibility |Sets or returns whether or not an element should be visible when not facing the screen |3 |
|border |Sets or returns borderWidth, borderStyle, and borderColor in one declaration |1 |
|borderBottom |Sets or returns all the borderBottom properties in one declaration |1 |
|borderBottomColor |Sets or returns the color of the bottom border |1 |
|borderBottomLeftRadius |Sets or returns the shape of the border of the bottom-left corner |3 |
|borderBottomRightRadius |Sets or returns the shape of the border of the bottom-right corner |3 |
|borderBottomStyle |Sets or returns the style of the bottom border |1 |
|borderBottomWidth |Sets or returns the width of the bottom border |1 |
|borderCollapse |Sets or returns whether the table border should be collapsed into a single border, or not |2 |
|borderColor |Sets or returns the color of an element's border (can have up to four values) |1 |
|borderImage |A shorthand property for setting or returning all the borderImage properties |3 |
|borderImageOutset |Sets or returns the amount by which the border image area extends beyond the border box |3 |
|borderImageRepeat |Sets or returns whether the image-border should be repeated, rounded or stretched |3 |
|borderImageSlice |Sets or returns the inward offsets of the image-border |3 |
|borderImageSource |Sets or returns the image to be used as a border |3 |
|borderImageWidth |Sets or returns the widths of the image-border |3 |
|borderLeft |Sets or returns all the borderLeft properties in one declaration |1 |
|borderLeftColor |Sets or returns the color of the left border |1 |
|borderLeftStyle |Sets or returns the style of the left border |1 |
|borderLeftWidth |Sets or returns the width of the left border |1 |
|borderRadius |A shorthand property for setting or returning all the four borderRadius properties |3 |
|borderRight |Sets or returns all the borderRight properties in one declaration |1 |
|borderRightColor |Sets or returns the color of the right border |1 |
|borderRightStyle |Sets or returns the style of the right border |1 |
|borderRightWidth |Sets or returns the width of the right border |1 |
|borderSpacing |Sets or returns the space between cells in a table |2 |
|borderStyle |Sets or returns the style of an element's border (can have up to four values) |1 |
|borderTop |Sets or returns all the borderTop properties in one declaration |1 |
|borderTopColor |Sets or returns the color of the top border |1 |
|borderTopLeftRadius |Sets or returns the shape of the border of the top-left corner |3 |
|borderTopRightRadius |Sets or returns the shape of the border of the top-right corner |3 |
|borderTopStyle |Sets or returns the style of the top border |1 |
|borderTopWidth |Sets or returns the width of the top border |1 |
|borderWidth |Sets or returns the width of an element's border (can have up to four values) |1 |
|bottom |Sets or returns the bottom position of a positioned element |2 |
|boxDecorationBreak |Sets or returns the behaviour of the background and border of an element at page-break, or, for in-line elements, at line-break. |3 |
|boxShadow |Attaches one or more drop-shadows to the box |3 |
|boxSizing |Allows you to define certain elements to fit an area in a certain way |3 |
|captionSide |Sets or returns the position of the table caption |2 |
|clear |Sets or returns the position of the element relative to floating objects |1 |
|clip |Sets or returns which part of a positioned element is visible |2 |
|color |Sets or returns the color of the text |1 |
|columnCount |Sets or returns the number of columns an element should be divided into |3 |
|columnFill |Sets or returns how to fill columns |3 |
|columnGap |Sets or returns the gap between the columns |3 |
|columnRule |A shorthand property for setting or returning all the columnRule properties |3 |
|columnRuleColor |Sets or returns the color of the rule between columns |3 |
|columnRuleStyle |Sets or returns the style of the rule between columns |3 |
|columnRuleWidth |Sets or returns the width of the rule between columns |3 |
|columns |A shorthand property for setting or returning columnWidth and columnCount |3 |
|columnSpan |Sets or returns how many columns an element should span across |3 |
|columnWidth |Sets or returns the width of the columns |3 |
|content |Used with the :before and :after pseudo-elements, to insert generated content |2 |
|counterIncrement |Increments one or more counters |2 |
|counterReset |Creates or resets one or more counters |2 |
|cursor |Sets or returns the type of cursor to display for the mouse pointer |2 |
|direction |Sets or returns the text direction |2 |
|display |Sets or returns an element's display type |1 |
|emptyCells |Sets or returns whether to show the border and background of empty cells, or not |2 |
|filter |Sets or returns image filters (visual effects, like blur and saturation) |3 |
|flex |Sets or returns the length of the item, relative to the rest |3 |
|flexBasis |Sets or returns the initial length of a flexible item |3 |
|flexDirection |Sets or returns the direction of the flexible items |3 |
|flexFlow |A shorthand property for the flexDirection and the flexWrap properties |3 |
|flexGrow |Sets or returns how much the item will grow relative to the rest |3 |
|flexShrink |Sets or returns how the item will shrink relative to the rest |3 |
|flexWrap |Sets or returns whether the flexible items should wrap or not |3 |
|cssFloat |Sets or returns the horizontal alignment of an element |1 |
|font |Sets or returns fontStyle, fontVariant, fontWeight, fontSize, lineHeight, and fontFamily in one declaration |1 |
|fontFamily |Sets or returns the font family for text |1 |
|fontSize |Sets or returns the font size of the text |1 |
|fontStyle |Sets or returns whether the style of the font is normal, italic or oblique |1 |
|fontVariant |Sets or returns whether the font should be displayed in small capital letters |1 |
|fontWeight |Sets or returns the boldness of the font |1 |
|fontSizeAdjust |Preserves the readability of text when font fallback occurs |3 |
|fontStretch |Selects a normal, condensed, or expanded face from a font family |3 |
|hangingPunctuation |Specifies whether a punctuation character may be placed outside the line box |3 |
|height |Sets or returns the height of an element |1 |
|hyphens |Sets how to split words to improve the layout of paragraphs |3 |
|icon |Provides the author the ability to style an element with an iconic equivalent |3 |
|imageOrientation |Specifies a rotation in the right or clockwise direction that a user agent applies to an image |3 |
|isolation |Defines whether an element must create a new stacking content |3 |
|justifyContent |Sets or returns the alignment between the items inside a flexible container when the items do not use all available space. |3 |
|left |Sets or returns the left position of a positioned element |2 |
|letterSpacing |Sets or returns the space between characters in a text |1 |
|lineHeight |Sets or returns the distance between lines in a text |1 |
|listStyle |Sets or returns listStyleImage, listStylePosition, and listStyleType in one declaration |1 |
|listStyleImage |Sets or returns an image as the list-item marker |1 |
|listStylePosition |Sets or returns the position of the list-item marker |1 |
|listStyleType |Sets or returns the list-item marker type |1 |
|margin |Sets or returns the margins of an element (can have up to four values) |1 |
|marginBottom |Sets or returns the bottom margin of an element |1 |
|marginLeft |Sets or returns the left margin of an element |1 |
|marginRight |Sets or returns the right margin of an element |1 |
|marginTop |Sets or returns the top margin of an element |1 |
|maxHeight |Sets or returns the maximum height of an element |2 |
|maxWidth |Sets or returns the maximum width of an element |2 |
|minHeight |Sets or returns the minimum height of an element |2 |
|minWidth |Sets or returns the minimum width of an element |2 |
|navDown |Sets or returns where to navigate when using the arrow-down navigation key |3 |
|navIndex |Sets or returns the tabbing order for an element |3 |
|navLeft |Sets or returns where to navigate when using the arrow-left navigation key |3 |
|navRight |Sets or returns where to navigate when using the arrow-right navigation key |3 |
|navUp |Sets or returns where to navigate when using the arrow-up navigation key |3 |
|objectFit |Specifies how the contents of a replaced element should be fitted to the box established by its used height and width |3 |
|objectPosition |Specifies the alignment of the replaced element inside its box |3 |
|opacity |Sets or returns the opacity level for an element |3 |
|order |Sets or returns the order of the flexible item, relative to the rest |3 |
|orphans |Sets or returns the minimum number of lines for an element that must be left at the bottom of a page when a page break occurs inside an element |2 |
|outline |Sets or returns all the outline properties in one declaration |2 |
|outlineColor |Sets or returns the color of the outline around a element |2 |
|outlineOffset |Offsets an outline, and draws it beyond the border edge |3 |
|outlineStyle |Sets or returns the style of the outline around an element |2 |
|outlineWidth |Sets or returns the width of the outline around an element |2 |
|overflow |Sets or returns what to do with content that renders outside the element box |2 |
|overflowX |Specifies what to do with the left/right edges of the content, if it overflows the element's content area |3 |
|overflowY |Specifies what to do with the top/bottom edges of the content, if it overflows the element's content area |3 |
|padding |Sets or returns the padding of an element (can have up to four values) |1 |
|paddingBottom |Sets or returns the bottom padding of an element |1 |
|paddingLeft |Sets or returns the left padding of an element |1 |
|paddingRight |Sets or returns the right padding of an element |1 |
|paddingTop |Sets or returns the top padding of an element |1 |
|pageBreakAfter |Sets or returns the page-break behavior after an element |2 |
|pageBreakBefore |Sets or returns the page-break behavior before an element |2 |
|pageBreakInside |Sets or returns the page-break behavior inside an element |2 |
|perspective |Sets or returns the perspective on how 3D elements are viewed |3 |
|perspectiveOrigin |Sets or returns the bottom position of 3D elements |3 |
|position |Sets or returns the type of positioning method used for an element (static, relative, absolute or fixed) |2 |
|quotes |Sets or returns the type of quotation marks for embedded quotations |2 |
|resize |Sets or returns whether or not an element is resizable by the user |3 |
|right |Sets or returns the right position of a positioned element |2 |
|tableLayout |Sets or returns the way to lay out table cells, rows, and columns |2 |
|tabSize |Sets or returns the length of the tab-character |3 |
|textAlign |Sets or returns the horizontal alignment of text |1 |
|textAlignLast |Sets or returns how the last line of a block or a line right before a forced line break is aligned when text-align is "justify" |3 |
|textDecoration |Sets or returns the decoration of a text |1 |
|textDecorationColor |Sets or returns the color of the text-decoration |3 |
|textDecorationLine |Sets or returns the type of line in a text-decoration |3 |
|textDecorationStyle |Sets or returns the style of the line in a text decoration |3 |
|textIndent |Sets or returns the indentation of the first line of text |1 |
|textJustify |Sets or returns the justification method used when text-align is "justify" |3 |
|textOverflow |Sets or returns what should happen when text overflows the containing element |3 |
|textShadow |Sets or returns the shadow effect of a text |3 |
|textTransform |Sets or returns the capitalization of a text |1 |
|top |Sets or returns the top position of a positioned element |2 |
|transform |Applies a 2D or 3D transformation to an element |3 |
|transformOrigin |Sets or returns the position of transformed elements |3 |
|transformStyle |Sets or returns how nested elements are rendered in 3D space |3 |
|transition |A shorthand property for setting or returning the four transition properties |3 |
|transitionProperty |Sets or returns the CSS property that the transition effect is for |3 |
|transitionDuration |Sets or returns how many seconds or milliseconds a transition effect takes to complete |3 |
|transitionTimingFunction |Sets or returns the speed curve of the transition effect |3 |
|transitionDelay |Sets or returns when the transition effect will start |3 |
|unicodeBidi |Sets or returns whether the text should be overridden to support multiple languages in the same document |2 |
|userSelect |Sets or returns whether the text of an element can be selected or not |2 |
|verticalAlign |Sets or returns the vertical alignment of the content in an element |1 |
|visibility |Sets or returns whether an element should be visible |2 |
|whiteSpace |Sets or returns how to handle tabs, line breaks and whitespace in a text |1 |
|width |Sets or returns the width of an element |1 |
|wordBreak |Sets or returns line breaking rules for non-CJK scripts |3 |
|wordSpacing |Sets or returns the spacing between words in a text |1 |
|wordWrap |Allows long, unbreakable words to be broken and wrap to the next line |3 |
|widows |Sets or returns the minimum number of lines for an element that must be visible at the top of a page |2 |
|zIndex |Sets or returns the stack order of a positioned element |2 |
### 访问样式对象
可以从文档的头部或特定的HTML元素访问Style对象。
- 从文档的头部访问样式对象： 例如： `var x = document.getElementsByTagName("STYLE");`
- 访问指定元素的样式对象： 例 `var x = document.getElementById("myH1").style;`
### 创建样式对象
- 您可以使用`document.createElement()`方法创建<style>元素： 例 `var x = document.createElement("STYLE");`
- 您还可以设置现有元素的样式属性： 例 `document.getElementById("myH1").style.color = "red";`
## `windows`窗口对象
窗口对象表示浏览器中打开的窗口。
如果文档包含框架（<iframe>标记），则浏览器将为HTML文档创建一个窗口对象，并为每个框架创建一个其他窗口对象。
注意：没有适用于`windows`对象的公共标准，但是所有主要的浏览器都支持它。
### `windows`窗口对象属性
|Property |Description |
| :----| :--------------|
|closed |Returns a Boolean value indicating whether a window has been closed or not |
|console |Returns a reference to the Console object, which provides methods for logging information to the browser's console (See Console object) |
|defaultStatus |Sets or returns the default text in the statusbar of a window |
|document |Returns the Document object for the window (See Document object) |
|frameElement |Returns the \<iframe> element in which the current window is inserted |
|frames |Returns all \<iframe> elements in the current window |
|history |Returns the History object for the window (See History object) |
|innerHeight |Returns the height of the window's content area (viewport) including scrollbars |
|innerWidth |Returns the width of a window's content area (viewport) including scrollbars |
|length |Returns the number of \<iframe> elements in the current window |
|localStorage |Allows to save key/value pairs in a web browser. Stores the data with no expiration date |
|location |Returns the Location object for the window (See Location object) |
|name |Sets or returns the name of a window |
|navigator |Returns the Navigator object for the window (See Navigator object) |
|opener |Returns a reference to the window that created the window |
|outerHeight |Returns the height of the browser window, including toolbars/scrollbars |
|outerWidth |Returns the width of the browser window, including toolbars/scrollbars |
|pageXOffset |Returns the pixels the current document has been scrolled (horizontally) from the upper left corner of the window |
|pageYOffset |Returns the pixels the current document has been scrolled (vertically) from the upper left corner of the window |
|parent |Returns the parent window of the current window |
|screen |Returns the Screen object for the window (See Screen object) |
|screenLeft |Returns the horizontal coordinate of the window relative to the screen |
|screenTop |Returns the vertical coordinate of the window relative to the screen |
|screenX |Returns the horizontal coordinate of the window relative to the screen |
|screenY |Returns the vertical coordinate of the window relative to the screen |
|sessionStorage |Allows to save key/value pairs in a web browser. Stores the data for one session |
|scrollX |An alias of pageXOffset |
|scrollY |An alias of pageYOffset |
|self |Returns the current window |
|status |Sets or returns the text in the statusbar of a window |
|top |Returns the topmost browser window |
### `windows`窗口对象方法
|Method |Description |
| :----| :------------|
|alert() |Displays an alert box with a message and an OK button |
|atob() |Decodes a base-64 encoded string |
|blur() |Removes focus from the current window |
|btoa() |Encodes a string in base-64 |
|clearInterval() |Clears a timer set with setInterval() |
|clearTimeout() |Clears a timer set with setTimeout() |
|close() |Closes the current window |
|confirm() |Displays a dialog box with a message and an OK and a Cancel button |
|focus() |Sets focus to the current window |
|getComputedStyle() |Gets the current computed CSS styles applied to an element |
|getSelection() |Returns a Selection object representing the range of text selected by the user |
|matchMedia() |Returns a MediaQueryList object representing the specified CSS media query string |
|moveBy() |Moves a window relative to its current position |
|moveTo() |Moves a window to the specified position |
|open() |Opens a new browser window |
|print() |Prints the content of the current window |
|prompt() |Displays a dialog box that prompts the visitor for input |
|requestAnimationFrame() |Requests the browser to call a function to update an animation before the next repaint |
|resizeBy() |Resizes the window by the specified pixels |
|resizeTo() |Resizes the window to the specified width and height |
|scroll() |Deprecated. This method has been replaced by the scrollTo() method. |
|scrollBy() |Scrolls the document by the specified number of pixels |
|scrollTo() |Scrolls the document to the specified coordinates |
|setInterval() |Calls a function or evaluates an expression at specified intervals (in milliseconds) |
|setTimeout() |Calls a function or evaluates an expression after a specified number of milliseconds |
|stop() |Stops the window from loading |
-----------
- 课程大纲
- 入门篇
- 爬虫是什么
- 为什么要学习爬虫
- 爬虫的基本原理
- TCP/IP协议族的基本知识
- HTTP协议基础知识
- HTML基础知识
- HTML_DOM基础知识
- urllib3库的基本使用
- requests库的基本使用
- Web页面数据解析处理方法
- re库正则表达式的基础使用
- CSS选择器参考手册
- XPath快速了解
- 实战练习：百度贴吧热议榜
- 进阶篇
- 服务端渲染(CSR)页面抓取方法
- 客户端渲染(CSR)页面抓取方法
- Selenium库的基本使用
- Selenium库的高级使用
- Selenium调用JavaScript方法
- Selenium库的远程WebDriver
- APP移动端数据抓取基础知识
- HTTP协议代理抓包分析方法
- Appium测试Android应用基础环境准备
- Appium爬虫编写实战学习
- Appium的元素相关的方法
- Appium的Device相关操作方法
- Appium的交互操作方法
- 代理池的使用与搭建
- Cookies池的搭建与用法
- 数据持久化-数据库的基础操作方法(mysql/redis/mongodb)
- 执行JS之execjs库使用
- 高级篇
- Scrapy的基本知识
- Scrapy的Spider详细介绍
- Scrapy的Selector选择器使用方法
- Scrapy的Item使用方法
- Scrapy的ItemPipeline使用方法
- Scrapy的Shell调试方法
- Scrapy的Proxy设置方法
- Scrapy的Referer填充策略
- Scrapy的服务端部署方法
- Scrapy的分布式爬虫部署方法
- Headless浏览器-pyppeteer基础知识
- Headless浏览器-pyppeteer常用的设置方法
- Headless浏览器-反爬应对办法
- 爬虫设置技巧-UserAgent设置
- 反爬策略之验证码处理方法
- 反爬识别码之点击文字图片的自动识别方法
- 反爬字体处理方法总结
- 防止反爬虫的设置技巧总结
- 实战篇
- AJAX接口-CSDN技术博客文章标题爬取
- AJAX接口-拉购网职位搜索爬虫
- 执行JS示例方法一之动漫图片地址获取方法
- JS执行方法示例二完整mangabz漫画爬虫示例
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