浏览器/html/css面试题 · 前端面试题精编（微信小程序（基础到高级）js视频资源、vue/js/html/css/React/ES6面试题、算法、插件大全）（轻松面对面试）（持续更新）

[1.什么是盒模型](1.%E4%BB%80%E4%B9%88%E6%98%AF%E7%9B%92%E6%A8%A1%E5%9E%8B.md) [2.行内元素有哪些？块级元素有哪些？空(void)元素有那些？行内元素和块级元素有什么区别？](2.%E8%A1%8C%E5%86%85%E5%85%83%E7%B4%A0%E5%9D%97%E5%85%83%E7%B4%A0%E7%A9%BA%E5%85%83%E7%B4%A0.md) [3.简述src和href的区别](3.%E7%AE%80%E8%BF%B0src%E5%92%8Chref%E7%9A%84%E5%8C%BA%E5%88%AB.md) [4.什么是css Hack](4%E4%BB%80%E4%B9%88%E6%98%AFcssHack.md) [5.什么叫优雅降级和渐进增强](5.%E4%BB%80%E4%B9%88%E5%8F%AB%E4%BC%98%E9%9B%85%E9%99%8D%E7%BA%A7%E5%92%8C%E6%B8%90%E8%BF%9B%E5%A2%9E%E5%BC%BA.md) [6.px和em的区别](6.px%E5%92%8Cem%E7%9A%84%E5%8C%BA%E5%88%AB.md) [7.HTML5 为什么只写<!DOCTYPE HTML>](7.HTML5%E4%B8%BA%E4%BB%80%E4%B9%88%E5%8F%AA%E5%86%99DOCTYPEHTML.md) [8.Http的状态码有哪些](8.Http%E7%9A%84%E7%8A%B6%E6%80%81%E7%A0%81%E6%9C%89%E5%93%AA%E4%BA%9B.md) [9.一次完整的HTTP事务是怎么一个过程](9.%E4%B8%80%E6%AC%A1%E5%AE%8C%E6%95%B4%E7%9A%84HTTP%E4%BA%8B%E5%8A%A1%E6%98%AF%E6%80%8E%E4%B9%88%E4%B8%80%E4%B8%AA%E8%BF%87%E7%A8%8B.md) [10.HTTPS是如何实现加密](10.HTTPS%E6%98%AF%E5%A6%82%E4%BD%95%E5%AE%9E%E7%8E%B0%E5%8A%A0%E5%AF%86.md) [11.浏览器是如何渲染页面的](11.%E6%B5%8F%E8%A7%88%E5%99%A8%E6%98%AF%E5%A6%82%E4%BD%95%E6%B8%B2%E6%9F%93%E9%A1%B5%E9%9D%A2%E7%9A%84.md) [12.浏览器的内核有哪些？分别有什么代表的浏览器](12.%E6%B5%8F%E8%A7%88%E5%99%A8%E7%9A%84%E5%86%85%E6%A0%B8.md) [13.页面导入时，使用link和@import有什么区别](13.%E9%A1%B5%E9%9D%A2%E5%AF%BC%E5%85%A5%E6%97%B6%EF%BC%8C%E4%BD%BF%E7%94%A8link%E5%92%8Cimport%E6%9C%89%E4%BB%80%E4%B9%88%E5%8C%BA%E5%88%AB.md) [14.如何优化图像，图像格式的区别](14.%E5%A6%82%E4%BD%95%E4%BC%98%E5%8C%96%E5%9B%BE%E5%83%8F%EF%BC%8C%E5%9B%BE%E5%83%8F%E6%A0%BC%E5%BC%8F%E7%9A%84%E5%8C%BA%E5%88%AB.md) [15.列举你了解Html5. Css3 新特性](15.%E5%88%97%E4%B8%BE%E4%BD%A0%E4%BA%86%E8%A7%A3Html5.Css3%E6%96%B0%E7%89%B9%E6%80%A7.md) [16.可以通过哪些方法优化css3 animation渲染](16.%E5%8F%AF%E4%BB%A5%E9%80%9A%E8%BF%87%E5%93%AA%E4%BA%9B%E6%96%B9%E6%B3%95%E4%BC%98%E5%8C%96css3animation%E6%B8%B2%E6%9F%93.md) [17.列举几个前端性能方面的优化](17.%E5%88%97%E4%B8%BE%E5%87%A0%E4%B8%AA%E5%89%8D%E7%AB%AF%E6%80%A7%E8%83%BD%E6%96%B9%E9%9D%A2%E7%9A%84%E4%BC%98%E5%8C%96.md) [18.如何实现同一个浏览器多个标签页之间的通信](18.%E5%A6%82%E4%BD%95%E5%AE%9E%E7%8E%B0%E5%90%8C%E4%B8%80%E4%B8%AA%E6%B5%8F%E8%A7%88%E5%99%A8%E5%A4%9A%E4%B8%AA%E6%A0%87%E7%AD%BE%E9%A1%B5%E4%B9%8B%E9%97%B4%E7%9A%84%E9%80%9A%E4%BF%A1.md) [19.浏览器的存储技术有哪些](19.%E6%B5%8F%E8%A7%88%E5%99%A8%E7%9A%84%E5%AD%98%E5%82%A8%E6%8A%80%E6%9C%AF%E6%9C%89%E5%93%AA%E4%BA%9B.md) [20.css定位方式](20.%E6%B5%8F%E8%A7%88%E5%99%A8%E7%9A%84%E5%AE%9A%E4%BD%8D%E6%96%B9%E5%BC%8F.md) [21.尽可能多的写出浏览器兼容性问题](21.%E5%B0%BD%E5%8F%AF%E8%83%BD%E5%A4%9A%E7%9A%84%E5%86%99%E5%87%BA%E6%B5%8F%E8%A7%88%E5%99%A8%E5%85%BC%E5%AE%B9%E6%80%A7%E9%97%AE%E9%A2%98.md) [22.垂直上下居中的方法](22.%E5%9E%82%E7%9B%B4%E4%B8%8A%E4%B8%8B%E5%B1%85%E4%B8%AD%E7%9A%84%E6%96%B9%E6%B3%95.md) [23.响应式布局原理](23.%E5%93%8D%E5%BA%94%E5%BC%8F%E5%B8%83%E5%B1%80%E5%8E%9F%E7%90%86.md) [25.清除浮动的方法](25.%E6%B8%85%E9%99%A4%E6%B5%AE%E5%8A%A8%E7%9A%84%E6%96%B9%E6%B3%95.md) [26.http协议和tcp协议](26.http%E5%8D%8F%E8%AE%AE%E5%92%8Ctcp%E5%8D%8F%E8%AE%AE.md) [27.刷新页面，js请求一般会有哪些地方有缓存处理](27.%E5%88%B7%E6%96%B0%E9%A1%B5%E9%9D%A2%EF%BC%8Cjs%E8%AF%B7%E6%B1%82%E4%B8%80%E8%88%AC%E4%BC%9A%E6%9C%89%E5%93%AA%E4%BA%9B%E5%9C%B0%E6%96%B9%E6%9C%89%E7%BC%93%E5%AD%98%E5%A4%84%E7%90%86.md) [28.如何对网站的文件和资源进行优化](28.%E5%A6%82%E4%BD%95%E5%AF%B9%E7%BD%91%E7%AB%99%E7%9A%84%E6%96%87%E4%BB%B6%E5%92%8C%E8%B5%84%E6%BA%90%E8%BF%9B%E8%A1%8C%E4%BC%98%E5%8C%96.md) [29.你对网页标准和W3C重要性的理解](29.%E4%BD%A0%E5%AF%B9%E7%BD%91%E9%A1%B5%E6%A0%87%E5%87%86%E5%92%8CW3C%E9%87%8D%E8%A6%81%E6%80%A7%E7%9A%84%E7%90%86%E8%A7%A3.md) [30.Http和https的区别](30.Http%E5%92%8Chttps%E7%9A%84%E5%8C%BA%E5%88%AB.md) [31.data-属性的作用](32.data-%E5%B1%9E%E6%80%A7%E7%9A%84%E4%BD%9C%E7%94%A8.md) [32.如何让Chrome浏览器显示小于12px的文字](32.%E5%A6%82%E4%BD%95%E8%AE%A9Chrome%E6%B5%8F%E8%A7%88%E5%99%A8%E6%98%BE%E7%A4%BA%E5%B0%8F%E4%BA%8E12px%E7%9A%84%E6%96%87%E5%AD%97.md) [33.哪些操作会引起页面回流（Reflow）](33.%E5%93%AA%E4%BA%9B%E6%93%8D%E4%BD%9C%E4%BC%9A%E5%BC%95%E8%B5%B7%E9%A1%B5%E9%9D%A2%E5%9B%9E%E6%B5%81%EF%BC%88Reflow%EF%BC%89.md) [34.CSS预处理器的比较less sass](34.CSS%E9%A2%84%E5%A4%84%E7%90%86%E5%99%A8%E7%9A%84%E6%AF%94%E8%BE%83lesssass.md) [35.如何实现页面每次打开时清除本页缓存](35.%E5%A6%82%E4%BD%95%E5%AE%9E%E7%8E%B0%E9%A1%B5%E9%9D%A2%E6%AF%8F%E6%AC%A1%E6%89%93%E5%BC%80%E6%97%B6%E6%B8%85%E9%99%A4%E6%9C%AC%E9%A1%B5%E7%BC%93%E5%AD%98.md) [36.什么是Virtual DOM,为何要用Virtual DOM](36.%E4%BB%80%E4%B9%88%E6%98%AFVirtual.md) [37.伪元素和伪类的区别](37.%E4%BC%AA%E5%85%83%E7%B4%A0%E5%92%8C%E4%BC%AA%E7%B1%BB%E7%9A%84%E5%8C%BA%E5%88%AB.md) [38.http的几种请求方法和区别](38.http%E7%9A%84%E5%87%A0%E7%A7%8D%E8%AF%B7%E6%B1%82%E6%96%B9%E6%B3%95%E5%92%8C%E5%8C%BA%E5%88%AB.md) [39.前端需要注意哪些SEO](39.%E5%89%8D%E7%AB%AF%E9%9C%80%E8%A6%81%E6%B3%A8%E6%84%8F%E5%93%AA%E4%BA%9BSEO.md) [40.<img>的title和alt有什么区别](40.img%E7%9A%84title%E5%92%8Calt%E6%9C%89%E4%BB%80%E4%B9%88%E5%8C%BA%E5%88%AB.md) [41.从浏览器地址栏输入url到显示页面的步骤](41.%E4%BB%8E%E6%B5%8F%E8%A7%88%E5%99%A8%E5%9C%B0%E5%9D%80%E6%A0%8F%E8%BE%93%E5%85%A5url%E5%88%B0%E6%98%BE%E7%A4%BA%E9%A1%B5%E9%9D%A2%E7%9A%84%E6%AD%A5%E9%AA%A4.md) [42.如何进行网站性能优化](42.%E5%A6%82%E4%BD%95%E8%BF%9B%E8%A1%8C%E7%BD%91%E7%AB%99%E6%80%A7%E8%83%BD%E4%BC%98%E5%8C%96.md) [43.语义化的理解](43.%E8%AF%AD%E4%B9%89%E5%8C%96%E7%9A%84%E7%90%86%E8%A7%A3.md) [44.HTML5的离线储存怎么使用，工作原理能不能解释一下？](44.HTML5%E7%9A%84%E7%A6%BB%E7%BA%BF%E5%82%A8%E5%AD%98%E6%80%8E%E4%B9%88%E4%BD%BF%E7%94%A8%EF%BC%8C%E5%B7%A5%E4%BD%9C%E5%8E%9F%E7%90%86%E8%83%BD%E4%B8%8D%E8%83%BD%E8%A7%A3%E9%87%8A%E4%B8%80%E4%B8%8B%EF%BC%9F.md) [45.浏览器是怎么对HTML5的离线储存资源进行管理和加载的呢](45.%E6%B5%8F%E8%A7%88%E5%99%A8%E6%98%AF%E6%80%8E%E4%B9%88%E5%AF%B9HTML5%E7%9A%84%E7%A6%BB%E7%BA%BF%E5%82%A8%E5%AD%98%E8%B5%84%E6%BA%90%E8%BF%9B%E8%A1%8C%E7%AE%A1%E7%90%86%E5%92%8C%E5%8A%A0%E8%BD%BD%E7%9A%84%E5%91%A2.md) [46.iframe有那些缺点？](46.iframe%E6%9C%89%E9%82%A3%E4%BA%9B%E7%BC%BA%E7%82%B9%EF%BC%9F.md) [47.WEB标准以及W3C标准是什么?](47.WEB%E6%A0%87%E5%87%86%E4%BB%A5%E5%8F%8AW3C%E6%A0%87%E5%87%86%E6%98%AF%E4%BB%80%E4%B9%88.md) [48.Doctype作用? 严格模式与混杂模式如何区分？它们有何意义?](48.Doctype%E4%BD%9C%E7%94%A8%E4%B8%A5%E6%A0%BC%E6%A8%A1%E5%BC%8F%E4%B8%8E%E6%B7%B7%E6%9D%82%E6%A8%A1%E5%BC%8F%E5%A6%82%E4%BD%95%E5%8C%BA%E5%88%86%EF%BC%9F%E5%AE%83%E4%BB%AC%E6%9C%89%E4%BD%95%E6%84%8F%E4%B9%89.md) [49.HTML全局属性(global attribute)有哪些](49.HTML%E5%85%A8%E5%B1%80%E5%B1%9E%E6%80%A7globalattribute%E6%9C%89%E5%93%AA%E4%BA%9B.md) [50.Canvas和SVG有什么区别？](50.Canvas%E5%92%8CSVG%E6%9C%89%E4%BB%80%E4%B9%88%E5%8C%BA%E5%88%AB%EF%BC%9F.md) [51.如何在页面上实现一个圆形的可点击区域？](51.%E5%A6%82%E4%BD%95%E5%9C%A8%E9%A1%B5%E9%9D%A2%E4%B8%8A%E5%AE%9E%E7%8E%B0%E4%B8%80%E4%B8%AA%E5%9C%86%E5%BD%A2%E7%9A%84%E5%8F%AF%E7%82%B9%E5%87%BB%E5%8C%BA%E5%9F%9F%EF%BC%9F.md) [52.网页验证码是干嘛的，是为了解决什么安全问题](52.%E7%BD%91%E9%A1%B5%E9%AA%8C%E8%AF%81%E7%A0%81%E6%98%AF%E5%B9%B2%E5%98%9B%E7%9A%84%EF%BC%8C%E6%98%AF%E4%B8%BA%E4%BA%86%E8%A7%A3%E5%86%B3%E4%BB%80%E4%B9%88%E5%AE%89%E5%85%A8%E9%97%AE%E9%A2%98.md) [53.请描述一下 cookies，sessionStorage 和 localStorage 的区别？](53.%E8%AF%B7%E6%8F%8F%E8%BF%B0%E4%B8%80%E4%B8%8Bcookies%EF%BC%8CsessionStorage%E5%92%8ClocalStorage%E7%9A%84%E5%8C%BA%E5%88%AB%EF%BC%9F.md) [54. CSS选择器有哪些？哪些属性可以继承？](54.CSS%E9%80%89%E6%8B%A9%E5%99%A8%E6%9C%89%E5%93%AA%E4%BA%9B%EF%BC%9F%E5%93%AA%E4%BA%9B%E5%B1%9E%E6%80%A7%E5%8F%AF%E4%BB%A5%E7%BB%A7%E6%89%BF%EF%BC%9F.md) [55.CSS优先级算法如何计算？](55.CSS%E4%BC%98%E5%85%88%E7%BA%A7%E7%AE%97%E6%B3%95%E5%A6%82%E4%BD%95%E8%AE%A1%E7%AE%97%EF%BC%9F.md) [56.CSS3有哪些新特性？](56.CSS3%E6%9C%89%E5%93%AA%E4%BA%9B%E6%96%B0%E7%89%B9%E6%80%A7%EF%BC%9F.md) [57.请解释一下CSS3的flexbox（弹性盒布局模型）,以及适用场景？](57.%E8%AF%B7%E8%A7%A3%E9%87%8A%E4%B8%80%E4%B8%8BCSS3%E7%9A%84flexbox%EF%BC%88%E5%BC%B9%E6%80%A7%E7%9B%92%E5%B8%83%E5%B1%80%E6%A8%A1%E5%9E%8B%EF%BC%89,%E4%BB%A5%E5%8F%8A%E9%80%82%E7%94%A8%E5%9C%BA%E6%99%AF%EF%BC%9F.md) [58.用纯CSS创建一个三角形的原理是什么？](58.%E7%94%A8%E7%BA%AFCSS%E5%88%9B%E5%BB%BA%E4%B8%80%E4%B8%AA%E4%B8%89%E8%A7%92%E5%BD%A2%E7%9A%84%E5%8E%9F%E7%90%86%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F.md) [59.常见的兼容性问题？](59.%E5%B8%B8%E8%A7%81%E7%9A%84%E5%85%BC%E5%AE%B9%E6%80%A7%E9%97%AE%E9%A2%98%EF%BC%9F.md) [60.为什么要初始化CSS样式](60.%E4%B8%BA%E4%BB%80%E4%B9%88%E8%A6%81%E5%88%9D%E5%A7%8B%E5%8C%96CSS%E6%A0%B7%E5%BC%8F.md) [61.absolute的containing block计算方式跟正常流有什么不同？](61.absolute%E7%9A%84containingblock%E8%AE%A1%E7%AE%97%E6%96%B9%E5%BC%8F%E8%B7%9F%E6%AD%A3%E5%B8%B8%E6%B5%81%E6%9C%89%E4%BB%80%E4%B9%88%E4%B8%8D%E5%90%8C%EF%BC%9F.md) [62.CSS里的visibility属性有个collapse属性值？在不同浏览器下以后什么区别？](62.CSS%E9%87%8C%E7%9A%84visibility%E5%B1%9E%E6%80%A7%E6%9C%89%E4%B8%AAcollapse%E5%B1%9E%E6%80%A7%E5%80%BC%EF%BC%9F%E5%9C%A8%E4%B8%8D%E5%90%8C%E6%B5%8F%E8%A7%88%E5%99%A8%E4%B8%8B%E4%BB%A5%E5%90%8E%E4%BB%80%E4%B9%88%E5%8C%BA%E5%88%AB%EF%BC%9F.md) [63.display:none与visibility：hidden的区别？](63.displaynone%E4%B8%8Evisibility%EF%BC%9Ahidden%E7%9A%84%E5%8C%BA%E5%88%AB%EF%BC%9F.md) [64.position跟display、overflow、float这些特性相互叠加后会怎么样？](64.position%E8%B7%9Fdisplay%E3%80%81overflow%E3%80%81float%E8%BF%99%E4%BA%9B%E7%89%B9%E6%80%A7%E7%9B%B8%E4%BA%92%E5%8F%A0%E5%8A%A0%E5%90%8E%E4%BC%9A%E6%80%8E%E4%B9%88%E6%A0%B7%EF%BC%9F.md) 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