前几天去面试了一家公司，整下改公司的面试题。

1.新的 HTML5 文档类型和字符集是？

HTML5 文档类型很简单：

<!doctype html>

HTML5 使用 UTF-8 编码示例：

<meta charset="UTF-8">

2.HTML5 中如何嵌入音频？

当前，audio 元素支持三种音频格式：

aaarticlea/png;base64,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" alt="" />

<!-- control 属性供添加播放、暂停和音量控件 -->

<!-- audio 元素允许多个 source 元素。source 元素可以链接不同的音频文件。浏览器将使用第一个可识别的格式 -->

<audio controls="controls">

    <source src=”jamshed.mp3″ type=”audio/mpeg”>

    <source src=”jamshed.ogg″ type=”audio/ogg”>

    Your browser does’nt support audio embedding feature.

</audio>

3.HTML5 中如何嵌入视频？

更正：火狐和Opera的video标签已经支持标准 MP3音频和 MP4视频了

当前，video 元素支持三种视频格式：

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAsgAAABxCAIAAABHk8K1AAAPZ0lEQVR4nO2dzZGjyBZGMak3mFJ7dmPBRLQFeDARZQMOPC/YyY42od9CQmQmN38k7tfRKc7ZTAshdde5mZePBGqG3wAAAABODL9//14AAAAATrMHixv89VAmBVh1B6UKsOoOShUQLDqDMinAqjsoVYBVd1CqgGDRGZRJAVbdQakCrLqDUgUEi86gTAqw6g5KFWDVHZQqIFh0BmVSgFV3UKoAq+6gVAHBojMokwKsuoNSBVh1B6UKCBadQZkUYNUdlCrAqjsoVdAULIZhGIbh+OcyQ4DPPxaYBhpes/q/nz+GYRiGr+9X/57vr8eE+PHzf69+tjMYqApetvoYq58/3t7GdaC+NcHf7yd/L28Gi5bE8NyBbOGIWaZtZG58fQdD/AnNJUtm8KdeHxLfbQT3klykDMV+nQzOT+qoWl6xOnx9EyzqFJQeemhF45sTnGBxTBiFryZPKMiX6TELttGZvIQS5WDh1JUf33aRimQHajowLxW3ztJs9fb9RbBoIqP02D+/vyoarzXBy1SCRRLY/vvvv/BlbjeTP/hDfTIECwUvBovwWLh5/vnzx75rtNRxL0F09vPYLdz2KNS26f5y+54OjwtlpdGwDHVuyn/8iFUFn418Gf6T88wO3eVpPgpuPIfwz69YhzlujQFpf8OzFPtfaVanA2ylpfZpD7DDBM+Nw9yI/bSB+tqlkOPLxk+BCwQLBeeDxaGhhO9Gx8y4QOFucbb4+u76bNNWav5I4cZoWThnsuz/+M2fMwmKVq0fM0wA0W4t4/br2/6G8jjv7DBZVDo8f3SbSGm+DC+Y/xDqwSKUcHxZoGUfeJVXg0XL7ID2eywyB7x4DXpITwzDY2bUhIzdbvaJY2+8cgg8SorOAo+9N3hlBuiPvYfj5dPryGdp3GYHpPEN4SwIbuiyB/PfTq6jZm6wumMOsOPgNnczL7J0JKyJ14LFnWS7udu///4bvgtesGKhwOFSSNKgjY5UOrtJW0v/93OdW7FIg0Xe6mGcGwfCfi2mvLti0RwsjgOyIVjkq9MBtadCoh8uI8Sa09ndCBa32xDcV3HLh4xw/+H1B1OhHYKFAsdgke8S7SsWYS/rtYAn77FIX2Stls+8rxEsWu6x+IMrFn3R+LhpmnGNAVaY4AQLiyRYJBvNPZ8v//nnH8E/+7oQLBR4BgurZYcXqy99j8XtoCH5IbOrFzmrxWD3cZPg3FMhLeM2d49FMVhkq9MB2atL0bwLhGQtxiM7uxvBYuNksDD3hPfg91gocA0WN7sglUuwcapIni7ppUkHvPl7LA6r6oX37GARfvvX1zVWLG63W0bdC8HiZg7ItmBh/PW9SC/ethIQdIHMAEsneGY3gsXGXc6t+VJI+G5uT3gPfqGhAqy686bSrldp9DBQ3UGpAp8Vi0LUuHGzhStMAwVYdYdgoYCB6g5KFfA/IesMyqQAq+6gVAFW3UGpAoJFZ1AmBVh1B6UKsOoOShUQLDqDMinAqjsoVYBVd1CqgGDRGZRJAVbdQakCrLqDUgUEi86gTAqw6g5KFWDVHZQqIFh0BmVSgFV3UKoAq+6gVEEULAAAAABOsgeLX/DXQ5kUYNUdlCrAqjsoVUCw6AzKpACr7qBUAVbdQakCgkVnUCYFWHUHpQqw6g5KFRAsOoMyKcCqOyhVgFV3UKqAYNEZlEkBVt1BqQKsuoNSBQSLzqBMCrDqDkoVYNUdlCogWHQGZVKAVXdQqgCr7qBUAcGiMyiTAqy6g1IFWHUHpQoIFp1BmRRg1R2UKsCqOyhV0BYs1nkcnozz+gf/gRBjl+lRoGmJtkzMmEZygz8a+Dmf8U7Z3S5GrV8vU9pJAo+5HnN51VmrTWYaDF8POqqChmCxTJHg5CX8WfLTYJqmoDBMg1fIDP51HvcGvM6j3Y6jveBBPlgsk3VwW4LRG/454vKqS8GiZqbJ8PWgoyqoBgujnSabnn0iaRa57XCGwjRYwsJE04AzlQpNy6G5zlLp6ct0yX5UUZr2lXgBA9UZTgSLquHPt2dCR1VQCxbmaVqwMXq/YTucpDQNwsEfTAPOVKq0BItlyjSRaBX6KJd+bZH0hPLL6FOXVt12KSSTySqGP9+eCR1VQUuwMCfwfVAeU3B5O5ylVqZtnD+3GA2FeZBSPAo+e3bdmxU+6NcWlWF5vAPj8P2XVP1+Aq4b/nx7JnRUBedWLHIpuPH8A16nmv8eskvTgFqkNF0KaTk3ibQfuZB5yYpF+g2XU/3+NbtSr76KPRM6qoKT91iwYvGnaVhYWudxGKeJfN1O2yNn9dNoLl0/kdxjkX7D5VSfuBmIeyxs6KgKzj4VEp7FrfM4BInD3A4nabpi9bhvliuCrWQG/zIlDSRUut9NFN/SleqlX1scTjZyoxTVIfnTP9tMeFmk1gc+354JHVXB+d9jsT/8sWe60nY4RdutMPeCcQ9zK7nBHz/ZFKfrsF8bu4TfccXB3/C4aTIg7VGK6pCmgZocEGuGg30/3J4JHVWB62/ezC0VNywhQyP8njgFWHUHpQqw6g5KFZwOFqWoXDq5gPdgGijAqjsoVYBVd1CqgP9XSGdQJgVYdQelCrDqDkoVECw6gzIpwKo7KFWAVXdQqoBg0RmUSQFW3UGpAqy6g1IFBIvOoEwKsOoOShVg1R2UKiBYdAZlUoBVd1CqAKvuoFQBwaIzKJMCrLqDUgVYdQelCggWnUGZFGDVHZQqwKo7KFUQBQsAAACAk7Bi0ROUSQFW3UGpAqy6g1IFBIvOoEwKsOoOShVg1R2UKiBYdAZlUoBVd1CqAKvuoFQBwaIzKJMCrLqDUgVYdQelCggWnUGZFGDVHZQqwKo7KFVAsOgMyqQAq+6gVAFW3UGpAoJFZ1AmBVh1B6UKsOoOShUQLDqDMinAqjsoVYBVd1CqgGDRGZRJAVbdQakCrLqDUgW1YLHO4zAM02Jvuv/xyTiv4S4x+3ck706luq7zGHwvFKZBoDWrNNgHqQGlwR/aXOexPF5hA6UKstM/bbmmUqa/QU5pbDQ3RFFq0xYsQmfLtIte5zF4a5m2HePth+8L31rnMV+QdR7HMfdV1yQzDULj6zzaE2GZ9u3hnyE/+KcpFMVRsBmUKigFi1qbZPqb5DvqLjR3QENpjpZgMc3B3F+m4HXqe5nuL7PBYtuh7d82DdOSzyjXpFCm2llgLN/YZ5muOjNKVtPMFh0SOVnJgVIFJ4IF09+m6VIIHfVFmoLFEiaGcV7XTLB4viwEvOZ+8agJwSKmKViYonPFij513WlgbN2s7nYDz5yslEGpgrZLIZY4pn+GlmCxL8aHoDRPY7B4HKmCg33mUsjeLKx7LMLj3b6PkRv2/E2wiMlMg3jkm9Lq4ePS08DYuhvbhnYpUl9UXQ6UKjh3FGT6GxSVPo9SuayGUpvWYBHddZVuPATllktShT3DZT2CRcz7d2+VlpeOXMt5dR3oYau6VgcbKFXw/ro90z9Dk1JzAQ2leZqDRZjHcr0g+lTuHovjIybmubW14AHt08DwxRXBLA0XmNZ5HMZp4vS6EZQq4IYAd9oeNzWv4qM0ywvBwtj4crA4PBVSPS/hxCWmPg1yj+rUr2FfehoYW5PBHz4PxQ0BNVCqIP8IQ3wDbKiR6V8ke3E5OUyFoxSlNXTBIr/k8OgmbQtEBIuYbLDYrUb1Ot58kRd/6WlgbE0H/90ejzA0gVIFuekf9dQkuTH9izQpTQ5fKK3Bb97sDMqkAKvuoFQBVt1BqQKCRWdQJgVYdQelCrDqDkoVECw6gzIpwKo7KFWAVXdQqoBg0RmUSQFW3UGpAqy6g1IFBIvOoEwKsOoOShVg1R2UKiBYdAZlUoBVd1CqAKvuoFQBwaIzKJMCrLqDUgVYdQelCggWnUGZFGDVHZQqwKo7KFVAsOgMyqQAq+6gVAFW3UGpgihYAAAAAJyEFYueoEwKsOoOShVg1R2UKiBYdAZlUoBVd1CqAKvuoFQBwaIzKJMCrLqDUgVYdQelCggWnUGZFGDVHZQqwKo7KFVAsOgMyqQAq+6gVAFW3UGpAoJFZ1AmBVh1B6UKsOoOShUQLDqDMinAqjsoVYBVd1CqgGDRGZRJAVbdQakCrLqDUgXiYLHO4zDOq/8XXxamgQKsuoNSBVh1B6UKasFimaJgsM7jMExL9P5UqEsuWKzzOMRfZG2CI3aZ7vJCe+s8IrOZanNZ53HIRuSH/WHI73I9akqTzvKrWeMybXtdcHwXrVbNMFAN6KgKqisW0fw/2K7kikqwCN96TAoqVyE/DaZpCvwxDV6hchRc53Ecc2tvS6A9/PPFySt9Hv8in00aDyc2VyNrtcEMA9WEjqqgfikkSBbrPI7zHCSN+KzDyMPrPA7jND23b4VZ53GY5qBSyxS/hgyFabCEMS6aBpypVKidCMZu03eTOZCM4Vr4/lDqWS3yWdX42Kmo8vNVF7p07SdnoNrQURXUg0Xg8z7y9gEaDtWoUTw/E68g7zH5scP2Bes8jvNKJGygNA3CYsVl40ylTOEo+Gi3pbW3pF8nu9GvLcrebNvLNIzjs6HbO3y46sK6ctEMAzULHVVBw82bT6HbwNv+e48Dj+853IuxJYb0esczcEzL9rGgd1OiCuVpsCuOsl39XPDiFFL1w10pWCQ3HdGvf/16J1iUNaYfsdb+P191fvqXzTBQs9BRFbQ8FfIw92yy++td6H7f0BPjPO/5Ml7SSNIGFKhNg81xaRqweJeStWqvyMX7ZEf4kQuZ91+xyB0ar6S6Ov3ve1VjGQP1CR1VQdPjpss0DNO8d9l1Hsd5iQazNZR/1Vcsok8SLBpo6CzPG1vI160U7ww/xOX4o1y6NhHcY5E0mSuec7fcYp/pxgxUGzqqgrbfY3Ffjyg8HXJsFOuypJdCgiU6sxhUqIGmU5b4ERuuCFapP8sej+9l2qdDTS/92uJwnpfTmKqO7gtPjp6fr7pw86ZphoFahY6qoPEXZC1TnCOWyVgui0/wrHW28qM7BIsG2tZC7965h7mVM8Gippd+nb4z2YvutsZYdfDhS6qurCtX7DFQDeioCviV3p1BmRRg1R2UKsCqOyhVQLDoDMqkAKvuoFQBVt1BqQKCRWdQJgVYdQelCrDqDkoVECw6gzIpwKo7KFWAVXdQqoBg0RmUSQFW3UGpAqy6g1IFBIvOoEwKsOoOShVg1R2UKiBYdAZlUoBVd1CqAKvuoFQBwaIzKJMCrLqDUgVYdQelCggWnUGZFGDVHZQqwKo7KFUQBQsAAACAkzyCBQAAAIAL/wfkPFwEe7ipwQAAAABJRU5ErkJggg==" alt="" />

<!-- 跟 audio 元素一样 -->

<video width="320" height="240" controls="controls">

    <source src="movie.ogg" type="video/ogg">

    <source src="movie.mp4" type="video/mp4">

    Your browser does not support the video tag.

</video>

4.除了 audio 和 vidio，HTML5还有哪些媒体标签？

<embed src="helloworld.swf" />

<source> 标签允许您规定可替换的视频/音频文件供浏览器根据它对媒体类型或者编解码器的支持进行选择。

<video width="320" height="240" controls="controls">

    <source src="movie.ogg" type="video/ogg">

    <source src="movie.mp4" type="video/mp4">

    Your browser does not support the video tag.

</video>

<track> 播放带有字幕的视频：

<video width="320" height="240" controls="controls">

    <source src="forrest_gump.mp4" type="video/mp4" />

    <source src="forrest_gump.ogg" type="video/ogg" />

    <track kind="subtitles" src="subs_chi.srt" srclang="zh" label="Chinese">

    <track kind="subtitles" src="subs_eng.srt" srclang="en" label="English">

</video>

5.HTML5 存储类型有什么区别？

HTML5 能够本地存储数据，在之前都是使用 cookies 使用的。HTML5 提供了下面两种本地存储方案：

localStorage - 没有时间限制的数据存储，数据永远不会过期，关闭浏览器也不会丢失
sessionStorage - 针对一个 session 的数据存储，同一个会话中的页面才能访问并且当会话结束后数据也随之销毁。

6.HTML5 canvas 元素有什么作用？

用于在网页上绘制图形，该元素标签强大之处在于可以直接在 HTML5 上进行图形操作

<!doctype html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>Document</title>

</head>

<body>

    <canvas id="canvas"></canvas>

    <script>

        var canvas=document.getElementById('canvas');

        var ctx=canvas.getContext('2d');

        ctx.fillStyle='#FF0000';

        ctx.fillRect(0,0,200,200);

    </script>

</body>

</html>

效果：

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" 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7.HTML5 有哪些新增的表单元素？

新的input类型：

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" 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新的表单元素：

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" 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8.HTML5 废弃了那些 HTML4 标签？

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" alt="" />

9.HTML5 标准提供了哪些新的API？

1：canvas，不用多说，可以画出很多绚丽的图形，甚至可以直接做出伪3D游戏。

2：媒体控制，也很好理解(直译就是回放功能，假如只用html5.0以下的标签写，以前的音乐播放是不可能实现滚动条的。)

3：离线网页程序，可以把资源文件完全缓存在客户端，并且通过js的一些方法清空缓存

4：文档编辑，应该是更好的支持对文档的编辑。

5：拖动，可以将文件拖动到某些区域上传

6：跨文档请求，websocket，一种更加高效的通讯方式

7：历史管理，可以通过js管理和插入历史记录

8：MIME头自定义

9：客户端数据存储，localstoage sessionstoage

10：地理位置共享

11：本地数据库

12：索引数据库

10.HTML5 应用程序缓存和浏览器缓存有什么区别？

HTML5 引入了应用程序缓存，这意味着 web 应用可进行缓存，并可在没有因特网连接时进行访问。

应用程序缓存为应用带来三个优势：

　　离线浏览 - 用户可在应用离线时使用它们

　　速度 - 已缓存资源加载得更快

　　减少服务器负载 - 浏览器将只从服务器下载更新过或更改过的资源。

实现借助于 manifest 文件

<html manifest="demo.appcache">

11.doctype 作用？严格模式与混合模式如何区分？它们有何意义？

<!DOCTYPE> 声明可告知浏览器文档使用哪种 HTML 或 XHTML 规范。

在标准模式中，浏览器根据规范呈现页面；在混杂模式中，页面以一种比较宽松的向后兼容的方式显示

<!-- HTML4.01文档严格定义类型，此类型定义的文档可以使用HTML中的标签与元素，不能包含不被W3C推荐的标签，不可以使用框架 -->

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">

<!-- HTML4.01文档过渡定义类型，此类型定义的文档可以使用HTML中的标签与元素包括一些不被W3C推荐的标签，不可以使用框架 -->

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<!-- HTML4.01文档框架定义类型，此类型等同于HTML4.01文档过渡定义类型，但可以使用框架 -->

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN" "http://www.w3.org/TR/html4/frameset.dtd">

<!-- XHTML1.0文档过渡定义类型，此类型定义的文档可以使用HTML中的标签与元素包括一些不被W3C推荐的标签，不可以使用框架 -->

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<!-- XHTML1.0文档严格定义类型，此类型定义的文档只可以使用HTML中定义的标签与元素，不能包含不被W3C推荐的标签，不可以使用框架 -->

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<!-- XHTML1.0文档框架定义类型，等同于XHTML1.0文档过渡定义类型，但可以使用框架 -->

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">

<!-- XHTML1.1文档严格定义类型，等同于XHTML1.0文档过渡定义类型 -->

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">

12.行内元素有哪些？块级元素有哪些？空（void）元素有哪些？

块级元素：

　　address - 地址　　　　

　　blockquote - 块引用

　 center - 举中对齐块

　　dir - 目录列表

　　div - 常用块级容易，也是css layout的主要标签

　　dl - 定义列表

　　fieldset - form控制组

　　form - 交互表单

　　h1 - 大标题

　　h2 - 副标题

　　h3 - 3级标题

　　h4 - 4级标题

　　h5 - 5级标题

　　h6 - 6级标题

　　hr - 水平分隔线

　　isindex - input prompt

　　menu - 菜单列表

　　noframes - frames可选内容，（对于不支持frame的浏览器显示此区块内容

　　noscript - 可选脚本内容（对于不支持script的浏览器显示此内容）

　　ol - 排序表单

　　p - 段落

　　pre - 格式化文本

　　table - 表格

　　ul - 非排序列表

行级元素：

　　a - 锚点

　　abbr - 缩写

　　acronym - 首字

　　b - 粗体(不推荐)

　　bdo - bidi override

　　big - 大字体

　　br - 换行

　　cite - 引用

　　code - 计算机代码(在引用源码的时候需要)

　　dfn - 定义字段

　　em - 强调

　　font - 字体设定(不推荐)

　　i - 斜体

　　img - 图片

　　input - 输入框

　　kbd - 定义键盘文本

　　label - 表格标签

　　q - 短引用

　　s - 中划线(不推荐)

　　samp - 定义范例计算机代码

　　select - 项目选择

　　small - 小字体文本

　　span - 常用内联容器，定义文本内区块

　　strike - 中划线

　　strong - 粗体强调

　　sub - 下标

　　sup - 上标

　　textarea - 多行文本输入框

　　tt - 电传文本

　　u - 下划线

空元素，没有内容的 HTML 元素被称为空元素：

　　<br> - 定义换行

　　<hr> - 分割线

　　<img>

　　<input>

13.link 和 @import 的区别是？

引用CSS的两种方式：

<link rel="stylesheet" href="taojiaqu.css" type="text/css" />

<style type="text/css">@import url(taojiaqu.css) </style>

1.link是XHTML标签，除了加载CSS外，还可以定义RSS等其他事务；@import属于CSS范畴，只能加载CSS。

2.link引用CSS时，在页面载入时同时加载；@import需要页面网页完全载入以后加载。

3.link是XHTML标签，无兼容问题；@import是在CSS2.1提出的，低版本的浏览器不支持。

4.link支持使用Javascript控制DOM去改变样式；而@import不支持。

14.浏览器的内核分别是什么？

Trident(IE内核)，是微软开发的一种排版引擎。

Gecko(Firefox内核)，是一套开放源代码的、以C++编写的网页排版引擎。

Presto(Opera前内核) (已废弃)。

Webkit(Safari内核,Chrome内核原型,开源)。

15.常见兼容性问题及解决方案？

1.清除图片下方出现几像素的空白间隙

img{display:block;}

img{vertical-align:top;}

2.不同浏览器的标签默认的外边距和内边距不同

*｛margin:0;padding:0｝

这个还有很多，之后再来整一篇。有些遇到了才会发现...

16.用js写个原生的ajax过程

window.onload=function(){

    document.getElementsByTagName('a')[0].onclick=function(){

        if (window.XMLHttpRequest){

            var xmlhttp=new XMLHttpRequest();

        }else{

            var xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");

        }

        var method='GET';

        var url=this.href;

        xmlhttp.open(method,url);

        xmlhttp.send();

        xmlhttp.onreadystatechange=function(){

            if(xmlhttp.readyState==4){

                if(xmlhttp.status==200||xmlhttp.status==304){

                    var txt=xmlhttp.responseText;

                    var json=eval('('+txt+')');

                    document.getElementById('name').innerHTML='姓名'+json.ruei.name;

                    document.getElementById('age').innerHTML='年龄'+json.ruei.age;

                    document.getElementById('job').innerHTML='工作'+json.ruei.job;

                }

            }

        }

        return false;

    }

}

17.请实现，鼠标点击页面中的任意标签，alert 该标签的名称（注意兼容性）

<!doctype html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>alert标签名</title>

</head>

<body>

    <div class="alert">div</div>

    <a href="javascript:;" class='alert'>a</a>

    <b class="alert">b</b>

    <script>

        function WClassName(className){

            if(document.getElementsByClassName){

                return document.getElementsByClassName(className);

            }else{

                var tag= document.getElementsByTagName("*");

                     var lengths=tag.length;

                var divs=[];

                for (var i=0; i<lengths; i++) {

                        if(tag[i].className==className){

                               divs.push(tag[i])

                        }

                    }

                return divs;

            }

        }

        window.onload=function(){

            var tagObj=WClassName('alert');

            for(var i=0,max=tagObj.length;i<max;i++){

                tagObj[i].onclick=function(){

                    alert(this.tagName);

                }

            }

        }

    </script>

</body>

</html>

方法2：

<!doctype html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>alert标签名</title>

</head>

<body>

    <div>div</div>

    <a href="javascript:;">a</a>

    <b>b</b>

    <script>

    function elementName(evt){

          evt = evt|| window.event;   // IE: window.event

          // IE用srcElement获取事件源，而FF用target获取事件源

          var selected = evt.target || evt.srcElement;

          alert(selected.tagName);

      }

      window.onload = function(){

          var el =document.getElementsByTagName('body');

          el[0].onclick = elementName;

      }

    </script>

</body>

</html>

18.请指出以下代码的性能问题，并进行优化。

var info="淘家趣（www.taojiaqu.com）是一个关注潮流的资讯类购物网站。";

info+="提供新鲜好玩的家装资讯，电子科技，家趣产品。";

info+="精选的趣家商品，创意的家趣装修。";

info+="淘-趣家优品，享-生活乐趣。";

info=info.split("，");

for(var i=0 in info){

    alert(info[i]);

};

更改后：

火狐测试后，平均时间块2-3毫秒，有可以改进的还望指出...

1.字符串相加效率比较慢

2.考虑到代码要的效果，可以用数组直接实现，省去 info.split()

var info=new Array();

var info[0]="淘家趣（www.taojiaqu.com）是一个关注潮流的资讯类购物网站。提供新鲜好玩的家装资讯";

var info[1]="电子科技，家趣产品。精选的趣家商品";

var info[2]="创意的家趣装修。淘-趣家优品";

var info[3]="淘-趣家优品，享-生活乐趣。";

for(var i=0,max=info.length;i<max;i++){

    alert(info[i]);

}

19.请给出异步加载js方案，不少于两种。

默认情况javascript是同步加载的，也就是javascript的加载时阻塞的，后面的元素要等待javascript加载完毕后才能进行再加载，对于一些意义不是很大的javascript，如果放在页头会导致加载很慢的话，是会严重影响用户体验的。

1.defer（只支持IE）

<script type="text/javascript" defer="defer">

alert('taojiaqu');

</script>

2.async规定一旦脚本可用，则会异步执行，只适用于外部脚本

<script type="text/javascript" src="taojiaqu.js" async="async"></script>

3.创建script，插入到DOM中，加载完毕后callBack

<!doctype html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>alert标签名</title>

</head>

<body>

    <script>

    function loadScript(url, callback){

        var script = document.createElement("script")

        script.type = "text/javascript";

        if (script.readyState){ //IE

            script.onreadystatechange = function(){

                if (script.readyState == "loaded" || script.readyState == "complete"){

                    script.onreadystatechange = null;

                    callback();

                }

            };

        } else { //Others: Firefox, Safari, Chrome, and Opera

            script.onload = function(){

                callback();

            };

        }

        script.src = url;

        document.body.appendChild(script);

    }

    loadScript('http://www.taojiaqu.com/resource/public/jquery/jquery-1.11.2.min.js',function(){

        alert('ok');

    })

    </script>

</body>

</html>

20。请写出jquery绑定事件的方法，不少于两种。

.bind()是直接绑定在元素上

.live()则是通过冒泡的方式来绑定到元素上的。更适合列表类型的，绑定到document DOM节点上。和.bind()的优势是支持动态数据。(live由于性能原因已经被废弃)

.delegate()则是更精确的小范围使用事件代理，性能优于.live()

.on()则是最新的1.9版本整合了之前的三种方式的新事件绑定机制

1.无论使用bind、on、delegate、click(function())都是重复绑定，即绑定的同类型事件被放到一个事件队列中，依次执行，后绑定的事件不会替换之前绑定的，对于on使用off，delegate用undelegate，bind及click使用unbind来解除绑定，例如unbind(type)传递为事件类型，如果不传type则解出所有事件绑定；需要注意的是元素本身自带的事件无法unbind（如button1）

2.要绑定自定义事件，如'open'，以上函数都可以使用，但激活需要使用trigger

3.建议使用on函数

$('.myClass').on({

    click:function(eleDom){

        ...do someting

    },

    dbclick:function(eleDom){

        ...do someting

    }

})

知识有限，写的东西有不足或者错误信息还望各路大神指点指点，共勉进步。
所谓成功，就是不停地经历失败，并且始终保持热情...

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