# 浏览器对象
弹出框
```
<pre class="calibre14">```
<span class="token1">alert</span><span class="token2">(</span><span class="token3">1</span><span class="token2">)</span><span class="token2">;</span>
var ret <span class="token">=</span> <span class="token1">prompt</span><span class="token2">(</span><span class="token4">"请输入内容!"</span><span class="token2">,</span><span class="token4">""</span><span class="token2">)</span><span class="token2">;</span>
var v <span class="token">=</span> <span class="token1">confirm</span><span class="token2">(</span><span class="token4">'此操作不可恢复,确认吗?'</span><span class="token2">)</span><span class="token2">;</span> 返回<span class="token3">true</span>可操作
window<span class="token2">.</span><span class="token1">close</span><span class="token2">(</span><span class="token2">)</span><span class="token2">;</span>关闭当前窗口
window<span class="token2">.</span><span class="token1">print</span><span class="token2">(</span><span class="token2">)</span><span class="token2">;</span>打印
```
```
计时器
```
<pre class="calibre14">```
<span class="token5">function</span> <span class="token1">fn</span><span class="token2">(</span><span class="token2">)</span> <span class="token2">{</span>
var d<span class="token">=</span><span class="token5">new</span> <span class="token1">Date</span><span class="token2">(</span><span class="token2">)</span><span class="token2">;</span>
var t<span class="token">=</span>d<span class="token2">.</span><span class="token1">toLocaleTimeString</span><span class="token2">(</span><span class="token2">)</span><span class="token2">;</span>
document<span class="token2">.</span><span class="token1">getElementById</span><span class="token2">(</span><span class="token4">"a1"</span><span class="token2">)</span><span class="token2">.</span>innerHTML<span class="token">=</span>t<span class="token2">;</span>
<span class="token2">}</span>
var t <span class="token">=</span> <span class="token1">setTimeout</span><span class="token2">(</span><span class="token4">"fn()"</span><span class="token2">,</span><span class="token3">5000</span><span class="token2">)</span><span class="token2">;</span> 执行一次
<span class="token1">clearTimeout</span><span class="token2">(</span>t<span class="token2">)</span><span class="token2">;</span> 提前结束
var id<span class="token">=</span><span class="token1">setInterval</span><span class="token2">(</span><span class="token4">"fn()"</span><span class="token2">,</span><span class="token3">1000</span><span class="token2">)</span><span class="token2">;</span><span class="token6">//每1秒执行一次</span>
<span class="token1">clearInterval</span><span class="token2">(</span>id<span class="token2">)</span><span class="token2">;</span> 取消定时
```
```
- 读写localStorage,长时间存储 sessionStorage关闭后删除
```
<pre class="calibre14">```
localStorage<span class="token2">.</span><span class="token1">setItem</span><span class="token2">(</span><span class="token4">"key1"</span><span class="token2">,</span> <span class="token4">"123"</span><span class="token2">)</span><span class="token2">;</span>
localStorage<span class="token2">.</span><span class="token1">removeItem</span><span class="token2">(</span><span class="token4">"bar"</span><span class="token2">)</span><span class="token2">;</span>
var foo <span class="token">=</span> localStorage<span class="token2">.</span><span class="token1">getItem</span><span class="token2">(</span><span class="token4">"bar"</span><span class="token2">)</span><span class="token2">;</span>
```
```
- 选择器
```
<pre class="calibre14">```
var id<span class="token">=</span>document<span class="token2">.</span><span class="token1">getElementById</span><span class="token2">(</span><span class="token4">"id"</span><span class="token2">)</span><span class="token2">;</span>
var id <span class="token">=</span> document<span class="token2">.</span><span class="token1">querySelector</span><span class="token2">(</span><span class="token4">"#k"</span><span class="token2">)</span><span class="token2">;</span>
支持标签<span class="token2">,</span><span class="token2">.</span>class<span class="token2">,</span>a<span class="token2">[</span>target<span class="token">=</span>_blank<span class="token2">]</span>属性
var id <span class="token">=</span> document<span class="token2">.</span><span class="token1">querySelectorAll</span><span class="token2">(</span><span class="token4">"li"</span><span class="token2">)</span><span class="token2">;</span>
```
```
- window
```
<pre class="calibre14">```
document<span class="token2">.</span><span class="token1">write</span><span class="token2">(</span><span class="token4">"123"</span><span class="token2">)</span> 输出
console<span class="token2">.</span><span class="token1">log</span><span class="token2">(</span><span class="token4">"控制台"</span><span class="token2">)</span>
var url <span class="token">=</span> location<span class="token2">.</span>href<span class="token2">;</span>
location<span class="token2">.</span>href<span class="token">=</span><span class="token4">'http://www.baidu.com'</span><span class="token2">;</span>
var domain <span class="token">=</span> document<span class="token2">.</span>domain<span class="token2">;</span><span class="token6">//不含http</span>
var url <span class="token">=</span> <span class="token2">(</span>window<span class="token2">.</span>location<span class="token2">.</span>href<span class="token2">)</span><span class="token2">.</span><span class="token1">substring</span><span class="token2">(</span><span class="token3">0</span><span class="token2">,</span><span class="token2">(</span>window<span class="token2">.</span>location<span class="token2">.</span>href<span class="token2">)</span><span class="token2">.</span><span class="token1">indexOf</span><span class="token2">(</span>document<span class="token2">.</span>location<span class="token2">.</span>pathname<span class="token2">)</span><span class="token2">)</span><span class="token2">;</span><span class="token6">//包含http</span>
var from <span class="token">=</span> document<span class="token2">.</span>referrer<span class="token2">;</span>来源
location<span class="token2">.</span><span class="token1">reload</span><span class="token2">(</span><span class="token3">true</span><span class="token2">)</span><span class="token2">;</span>刷新
history<span class="token2">.</span><span class="token1">go</span><span class="token2">(</span><span class="token3">0</span><span class="token2">)</span><span class="token2">;</span>
history<span class="token2">.</span><span class="token1">go</span><span class="token2">(</span><span class="token3">1</span><span class="token2">)</span><span class="token2">;</span>前进
history<span class="token2">.</span><span class="token1">go</span><span class="token2">(</span><span class="token">-</span><span class="token3">1</span><span class="token2">)</span><span class="token2">;</span>后退
document<span class="token2">.</span>title<span class="token2">;</span>
document<span class="token2">.</span>title <span class="token">=</span> <span class="token4">"标题"</span><span class="token2">;</span>
document<span class="token2">.</span><span class="token1">querySelector</span><span class="token2">(</span><span class="token4">'#c'</span><span class="token2">)</span><span class="token2">.</span>dataset<span class="token2">.</span>sex <span class="token">=</span> <span class="token4">"男"</span><span class="token2">;</span>data属性
document<span class="token2">.</span><span class="token1">querySelector</span><span class="token2">(</span><span class="token4">'#c'</span><span class="token2">)</span><span class="token2">.</span>dataset<span class="token2">.</span>sex<span class="token2">;</span>
document<span class="token2">.</span><span class="token1">getElementById</span><span class="token2">(</span><span class="token4">'demo1'</span><span class="token2">)</span><span class="token2">.</span><span class="token1">setAttribute</span><span class="token2">(</span><span class="token4">'role'</span><span class="token2">,</span> <span class="token4">'button'</span><span class="token2">)</span><span class="token2">;</span> 设置获取属性
document<span class="token2">.</span><span class="token1">getElementById</span><span class="token2">(</span><span class="token4">'foo'</span><span class="token2">)</span><span class="token2">.</span><span class="token1">removeAttribute</span><span class="token2">(</span><span class="token4">'role'</span><span class="token2">)</span><span class="token2">;</span>
document<span class="token2">.</span><span class="token1">getElementById</span><span class="token2">(</span><span class="token4">'foo'</span><span class="token2">)</span><span class="token2">.</span>innerHTML <span class="token">=</span> <span class="token4">'Goodbye!'</span><span class="token2">;</span>设置值
```
```
- 逻辑
```
<pre class="calibre14">```
<span class="token5">if</span> <span class="token2">(</span>time<span class="token"><</span><span class="token3">10</span><span class="token2">)</span>
<span class="token2">{</span>
document<span class="token2">.</span><span class="token1">write</span><span class="token2">(</span><span class="token4">"<b>早上好</b>"</span><span class="token2">)</span><span class="token2">;</span>
<span class="token2">}</span>
<span class="token5">else</span> <span class="token5">if</span> <span class="token2">(</span>time<span class="token">>=</span><span class="token3">10</span> <span class="token">&&</span> time<span class="token"><</span><span class="token3">16</span><span class="token2">)</span>
<span class="token2">{</span>
document<span class="token2">.</span><span class="token1">write</span><span class="token2">(</span><span class="token4">"<b>今天好</b>"</span><span class="token2">)</span><span class="token2">;</span>
<span class="token2">}</span>
<span class="token5">else</span>
<span class="token2">{</span>
document<span class="token2">.</span><span class="token1">write</span><span class="token2">(</span><span class="token4">"<b>晚上好!</b>"</span><span class="token2">)</span><span class="token2">;</span>
<span class="token2">}</span>
<span class="token1">switch</span><span class="token2">(</span>n<span class="token2">)</span>
<span class="token2">{</span>
case <span class="token3">1</span><span class="token2">:</span>
执行代码块 <span class="token3">1</span>
<span class="token5">break</span><span class="token2">;</span>
case <span class="token3">2</span><span class="token2">:</span>
执行代码块 <span class="token3">2</span>
<span class="token5">break</span><span class="token2">;</span>
default<span class="token2">:</span>
与 case <span class="token3">1</span> 和 case <span class="token3">2</span> 不同时执行的代码
<span class="token2">}</span>
<span class="token5">for</span> <span class="token2">(</span>var i<span class="token">=</span><span class="token3">0</span><span class="token2">;</span>i<span class="token"><</span>cars<span class="token2">.</span>length<span class="token2">;</span>i<span class="token">++</span><span class="token2">)</span>
<span class="token2">{</span>
document<span class="token2">.</span><span class="token1">write</span><span class="token2">(</span>cars<span class="token2">[</span>i<span class="token2">]</span> <span class="token">+</span> <span class="token4">"<br>"</span><span class="token2">)</span><span class="token2">;</span>
<span class="token2">}</span>
<span class="token5">while</span> <span class="token2">(</span>条件<span class="token2">)</span>
<span class="token2">{</span>
需要执行的代码
<span class="token2">}</span>
```
```
监听事件
```
<pre class="calibre16">```
var el<span class="token">=</span> document<span class="token2">.</span><span class="token1">querySelector</span><span class="token2">(</span><span class="token4">'#btn'</span><span class="token2">)</span><span class="token2">;</span>
el<span class="token2">.</span><span class="token1">addEventListener</span><span class="token2">(</span><span class="token4">'click'</span><span class="token2">,</span><span class="token5">function</span><span class="token2">(</span><span class="token2">)</span><span class="token2">{</span>
document<span class="token2">.</span><span class="token1">getElementById</span><span class="token2">(</span><span class="token4">'loading1'</span><span class="token2">)</span><span class="token2">.</span>classList<span class="token2">.</span><span class="token1">add</span><span class="token2">(</span><span class="token4">'loading1'</span><span class="token2">)</span><span class="token2">;</span>
<span class="token2">}</span><span class="token2">)</span>
```
```
- 简介
- 第一章 数据库
- Mysql/mariadb
- 函数
- 基础
- 增删改索引
- 标准查询
- 高级查询
- TIDB集群mysql解决方案
- Redis
- 语言基础
- 5种数据类型
- 其他类型
- Sqlite
- 语言基础
- 常用查询
- 第二章 PHP
- 语言基础
- 第一课 流程控制和运算
- 第二课 数组
- 第三课 日期时间
- 第四课 常用函数
- 第五课 字符串
- 第六课 文件操作
- 第七课 面向对象
- 第八课 正则表达式
- 第九课 图片处理生成
- 第十课 curl/memche
- 第十一课 mysql和pdo
- 第十三课 cookie和session
- 第十四课 xml操作
- 第十五课 php5.3+新特性
- 第十六课 php7+
- 第十七课 密码安全
- 废弃函数
- php命令行
- redis应用
- 算法
- 排序算法
- 基础算法
- 无限级分类
- 自定义函数Fn
- 查找算法
- 自定义函数数据函数fn
- laravel
- 路由
- 常用语句
- 数据库
- dingo/api
- Yii2
- 控制器
- 常用类
- 数据库
- redis
- thinkphp6
- TP6文档
- TP6插件
- dedecms
- 织梦标签大全
- 数据库操作
- 内置函数和定义函数
- 织梦核心改动
- 织梦插件/底层标签开发
- PHP相关工具
- composer
- php开发环境phpenv
- Phpstorm使用
- windows编译php扩展
- PHP开源库
- 开源项目管理禅道
- sns_auth
- php-casbin权限控制
- php-jwt
- 微信SDKeasywechat
- querylist采集库
- workerman
- Box/Spout处理excel和csv
- dll扩展
- redis/memche/xdebug
- redis
- Lua
- php_xlswriter
- event
- swoole
- 常用代码库
- 微擎框架
- 第一课全局变量
- 第二课常用函数
- 第三课自定义微擎独有函数
- 第四课数据库操作
- 第五课微信端回复
- 第六课微擎高级操作
- 第八课global函数列表
- mainfest.xml详解
- js方法
- 人人商城
- 第一课model解读
- 第二课常用语句解读
- 第三课常用js解读
- 第四课附录常见问题
- 第五课附录处理报表|支付
- 常用JSON状态码
- 第三章 JavaScript
- js基础
- 浏览器对象
- 语言基础
- html5接口
- ES6新语法
- vue
- 基础语法
- 京东vueUI组件
- uniapp
- 组件开发规范
- nodejs
- 基础知识
- 安装node
- nvm不同版本node切换
- js常用标准库
- zepto/jquery
- weui
- js图标库
- elementUI
- validator表单验证
- layer弹出层
- requirejs
- wow动画
- 动画animate
- swiper4
- 百度编辑器
- flyio/axios/qs
- jquery.form
- bootstrap3
- clipboard复制
- slideout侧滑
- imagehover.css图片悬停动画
- webpack打包
- Bulma UI框架
- store 客户端存储
- lottie动画创建库
- sweetalert
- js自定义函数
- 常见JSSDK
- 微信公众号JSSDK
- 腾讯地图jssdk
- 微信小程序
- 第四章 编程语言
- markdown语言
- Dart语言
- Dart语言基础
- Flutter框架
- Lua语言
- 字符串,数组,表
- 自定义方法
- go语言
- 第1.1语言基本语法
- 第1.2流程控制
- 第1.3函数
- 第1.4结构体
- 第1.5接口
- 第1.6包
- go语言框架Gin
- CSS3语言
- CSS与CSS3
- 选择符
- 属性
- css3
- loading动画
- HTML5语言
- less
- sass
- C#
- 基础知识
- 函数
- 第五章 开发工具
- git
- nginx/apache服务器
- Linux常用操作
- crontab定时任务
- 注册表与cmd
- 阿里云ECS
- frp穿透和ssl续期
- 宝塔安装
- 树莓派
- 浏览器模拟
- 火狐/chrome常用插件
- WSL安装使用
- mac brew和终端命令
- win10相关