Web前端年后跳槽面试复习指南

<pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="">很多童鞋可能年后有自己的一些计划，比如换份工作环境，比如对职业目标有了新的打算。当然面试这一关不得不过，大概又不可能系统性的复习，这里罗列一些 重点 面试的知识点和文章，方便大家重温一些知识，祝大家心愿达成；

浏览器渲染

<pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="">浏览器的渲染流程，这一块几乎很多人都会问，如果你是个初级前端，可能这个问题，你大致能够了解道出一些就好，但是如果你是个高级前端，这一块你至少得随时画出这些图，这些有助于你去了解性能优化的点：

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<pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="">这里安利两篇文章，非常详细的讲解了渲染的流程：

• How browsers work
• Introduction to Layout in Mozilla

HTML

<pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="">HTML 现在相对问的比较少一点，但是如果你需要临时补一下的话，建议看下 Video 和 Canvas 元素。因为这两块确实成为了近两年非常火的话题；在W3C在新发布的 HTML5.2 规范中，推荐了 Dialog 元素，以及支付请求属性 allowpaymentrequest。推荐阅读下：

<pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"=""><pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"=""><pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"=""><pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"=""><pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"=""><ulliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" padding-left:="" 3rem;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"=""><pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"=""><pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="">What’s New in HTML 5.2?

CSS

<pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="">关于 CSS 的话题，一定要温习 Flex 布局，以及移动端布局的知识;除此之外更常见的问题还有:

• <pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;"="">7种方法解决移动端Retina屏幕1px边框问题
• <pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;"="">用CSS开启硬件加速来提高网站性能
• <pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;"="">SVG 图标 VS Icon Font
• <pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;"="">EM vs REM vs PX

<pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="">如果有时间，可以看下新的草案 CSS4 中提及的一些要点 ：

• Variables
• Grid Layout
• Matches
• Support

<pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"=""><pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"=""><pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"=""><pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"=""><pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"=""><ulliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" padding-left:="" 3rem;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"=""><pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"=""><pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"=""><pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"=""><ulliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" padding-left:="" 3rem;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"=""><pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"=""><ulliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" padding-left:="" 3rem;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"=""><pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="">CSS Level 4 Selectors

JavaScript

<pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="">关于 JS 的话，会分为 ES6 甚至 7,8 来考量，但是 ES5 的问题依旧不会放过。相对 ES5 建议看下 :

• JS原型继承和类式继承 尽管 ES2015 中提出了 class 关键字，但是我们还是希望重新温习下基于原型链的继承

<pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="">除此之外还建议温习一下 String 和 Array 对象上的一些基本 API

• <pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;"="">substr vs substring
• <pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;"="">JavaScript Array API

ES Future

<pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="">关于 ES6 甚至最新的 ES8 ，都是非常重要的知识点, 因为它已经广泛使用了。这里重点关注几个方面:

• Promise
• Async and Await
• Import vs Export
• 箭头函数
• 解构赋值
• Spread syntax

Node.js

<pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="">如果你接触过 Node.js 的话，我们还是希望强调一些基本的知识点:

• Process
• Path
• 文件操作
• Events

<pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="">除此之外，不要忘记我们经常使用的 npm 的一些常规命令:

• npm basic commands

框架

<pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="">前端框架三足鼎立， React VS Vue VS Angular。这里如果你擅长就尽量去搜索些关于实现原理的文章，每种框架的使用方式都不一样，问的也不一样，但是我们需要去理解一些基本原理;

• GUI 应用程序架构的十年变迁：MVC、MVP、MVVM、Unidirectional、Clean
• Vue 与其他框架对比
• 剖析vue实现原理，自己动手实现mvvm
• How Virtual-DOM and diffing works in React

<pliga' 1,="" 'onum'="" 'kern'="" 1;="" margin:="" 0px="" 1.75em;="" text-rendering:="" geometricprecision;="" color:="" rgb(58,="" 65,="" 69);="" font-family:="" "helvetica="" neue",="" 微软雅黑,="" 黑体,="" sans-serif;="" font-size:="" 15px;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400;="" letter-spacing:="" 0.12px;="" orphans:="" 2;="" text-align:="" start;="" text-indent:="" 0px;="" text-transform:="" none;="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" rgb(255,="" 255,="" 255);="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="">这些知识点一般都算高频和给自己加分的，不过面试还是希望大家都认真准备，时间充裕还是详细走个复习的流程:

HTTP(HTTP2/Socket) -> HTML+ CSS(3,4) -> JavaScript(ES5/6/7/8) -> Framework(Vue/Angular/React) -> Node.js -> JS Native(Android/iOS) -> WebGL/Desktop/Chrome Plugin(VR)