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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>mackxu的博客</title>
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
<meta name="description">
<meta property="og:type" content="website">
<meta property="og:title" content="mackxu的博客">
<meta property="og:url" content="http://mackxu.github.io/index.html">
<meta property="og:site_name" content="mackxu的博客">
<meta property="og:description">
<meta name="twitter:card" content="summary">
<meta name="twitter:title" content="mackxu的博客">
<meta name="twitter:description">
<link rel="alternative" href="/atom.xml" title="mackxu的博客" type="application/atom+xml">
<link rel="icon" href="/favicon.png">
<link rel="stylesheet" href="/css/style.css" type="text/css">
</head>
<body>
<div id="container">
<div id="wrap">
<header id="header">
<div id="banner"></div>
<div id="header-outer" class="outer">
<div id="header-title" class="inner">
<h1 id="logo-wrap">
<a href="/" id="logo">mackxu的博客</a>
</h1>
<h2 id="subtitle-wrap">
<a href="/" id="subtitle">学而时习之不亦说乎</a>
</h2>
</div>
<div id="header-inner" class="inner">
<nav id="main-nav">
<a id="main-nav-toggle" class="nav-icon"></a>
<a class="main-nav-link" href="/">Home</a>
<a class="main-nav-link" href="/archives">Archives</a>
</nav>
<nav id="sub-nav">
<a id="nav-rss-link" class="nav-icon" href="/atom.xml" title="RSS Feed"></a>
<a id="nav-search-btn" class="nav-icon" title="Search"></a>
</nav>
<div id="search-form-wrap">
<form action="//google.com/search" method="get" accept-charset="UTF-8" class="search-form"><input type="search" name="q" results="0" class="search-form-input" placeholder="Search"><button type="submit" class="search-form-submit"></button><input type="hidden" name="sitesearch" value="http://mackxu.github.io"></form>
</div>
</div>
</div>
</header>
<div class="outer">
<section id="main">
<article id="post-js-pattern-strategy2" class="article article-type-post" itemscope itemprop="blogPost">
<div class="article-meta">
<a href="/2016/04/04/js-pattern-strategy2/" class="article-date">
<time datetime="2016-04-04T03:49:58.000Z" itemprop="datePublished">Apr 4 2016</time>
</a>
</div>
<div class="article-inner">
<header class="article-header">
<h1 itemprop="name">
<a class="article-title" href="/2016/04/04/js-pattern-strategy2/">JS设计模式之策略模式(二)</a>
</h1>
</header>
<div class="article-entry" itemprop="articleBody">
<p>利用策略模式来校验用户是否输入了合法的数据<br>
<p class="article-more-link">
<a href="/2016/04/04/js-pattern-strategy2/#more">Read More</a>
</p>
</div>
<footer class="article-footer">
<a data-url="http://mackxu.github.io/2016/04/04/js-pattern-strategy2/" data-id="cimlhivl40011fyzq9izysf3v" class="article-share-link">Share</a>
<ul class="article-tag-list"><li class="article-tag-list-item"><a class="article-tag-list-link" href="/tags/js/">js</a></li><li class="article-tag-list-item"><a class="article-tag-list-link" href="/tags/pattern/">pattern</a></li></ul>
</footer>
</div>
</article>
<article id="post-js-pattern-strategy" class="article article-type-post" itemscope itemprop="blogPost">
<div class="article-meta">
<a href="/2016/04/04/js-pattern-strategy/" class="article-date">
<time datetime="2016-04-04T00:20:38.000Z" itemprop="datePublished">Apr 4 2016</time>
</a>
</div>
<div class="article-inner">
<header class="article-header">
<h1 itemprop="name">
<a class="article-title" href="/2016/04/04/js-pattern-strategy/">JS设计模式之策略模式</a>
</h1>
</header>
<div class="article-entry" itemprop="articleBody">
<p>策略模式定义：定义一系列的算法，把他们一个个封装起来，并且使它们可以相互交换<br>
<p class="article-more-link">
<a href="/2016/04/04/js-pattern-strategy/#more">Read More</a>
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</div>
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<ul class="article-tag-list"><li class="article-tag-list-item"><a class="article-tag-list-link" href="/tags/js/">js</a></li><li class="article-tag-list-item"><a class="article-tag-list-link" href="/tags/pattern/">pattern</a></li></ul>
</footer>
</div>
</article>
<article id="post-transition-display" class="article article-type-post" itemscope itemprop="blogPost">
<div class="article-meta">
<a href="/2016/01/17/transition-display/" class="article-date">
<time datetime="2016-01-17T02:56:51.000Z" itemprop="datePublished">Jan 17 2016</time>
</a>
</div>
<div class="article-inner">
<header class="article-header">
<h1 itemprop="name">
<a class="article-title" href="/2016/01/17/transition-display/">当transition遇到display</a>
</h1>
</header>
<div class="article-entry" itemprop="articleBody">
<p>实现淡入淡出时，可以使用jQuery的fadeIn()/fadeOut()。使用css3的transition(过渡)也能实现。<br>现在我们借助transition模仿jQuery实现盒子的淡入淡出:<br>通过button的click事件，给div#box添加或删除<code>classname</code>实现效果<br>HTML结构:</p>
<pre><code><button>动画按钮</button>
<<span class="keyword">div</span> <span class="type">class</span>=<span class="string">"box"</span> <span class="property">id</span>=<span class="string">"box"</span>></<span class="keyword">div</span>>
</code></pre><h2 id="过渡改变opacity属性值">过渡改变opacity属性值</h2><p>css代码：</p>
<pre><code><span class="class">.box</span> <span class="rules">{
<span class="rule"><span class="attribute">background-color</span>:<span class="value"> goldenrod</span></span>;
<span class="rule"><span class="attribute">width</span>:<span class="value"> <span class="number">300px</span></span></span>; <span class="rule"><span class="attribute">height</span>:<span class="value"> <span class="number">200px</span></span></span>;
<span class="rule"><span class="attribute">margin</span>:<span class="value"> <span class="number">100px</span> auto</span></span>;
<span class="rule"><span class="attribute">transition</span>:<span class="value"> all <span class="number">1s</span> linear</span></span>;
}</span>
<span class="class">.hide</span> <span class="rules">{
<span class="comment">/* display: none; */</span>
<span class="rule"><span class="attribute">opacity</span>:<span class="value"> <span class="number">0</span>
}</span></span></span>
</code></pre><p>JS代码:</p>
<pre><code>var <span class="variable">$box</span> = $(<span class="string">'#box'</span>);
$(<span class="string">'button'</span>).on(<span class="string">'click'</span>, <span class="keyword">function</span>() {
if(<span class="variable">$box</span>.hasClass(<span class="string">'hide'</span>)) {
<span class="variable">$box</span>.removeClass(<span class="string">'hide'</span>);
}else {
<span class="variable">$box</span>.addClass(<span class="string">'hide'</span>);
}
});
</code></pre><p>在点击按钮后可以看到淡入淡出效果，但是在css代码中解除对display属性注释后，在刷新页面，淡出淡入效果没有了。究其原因在于transition不支持display的none值与其它值之间的过渡，进而影响到盒子对opacity的过渡效果。<br>我们可以按照下面的步骤，实现效果： </p>
<ul>
<li>当盒子可见时，先实现opacity动画，动画结束后添加<code>display: none</code></li>
<li>当盒子不可见时，首先使其可见<code>display: block</code>，然后执行opacity动画。</li>
</ul>
<h2 id="解决办法">解决办法</h2><p>把<code>opacity: 0</code>从.hide抽离。<br>css代码: </p>
<pre><code><span class="class">.hide</span> <span class="rules">{ <span class="rule"><span class="attribute">display</span>:<span class="value"> none</span></span>; }</span>
<span class="class">.opacity0</span> <span class="rules">{ <span class="rule"><span class="attribute">opacity</span>:<span class="value"> <span class="number">0</span></span></span>; }</span>
</code></pre><p>JS代码如下：</p>
<pre><code>var <span class="variable">$box</span> = $(<span class="string">'#box'</span>);
$(<span class="string">'button'</span>).on(<span class="string">'click'</span>, <span class="keyword">function</span>() {
if(<span class="variable">$box</span>.hasClass(<span class="string">'hide'</span>)) {
<span class="variable">$box</span>.removeClass(<span class="string">'hide'</span>);
requestAnimationFrame(function() { // 合适时机执行淡入动画
<span class="variable">$box</span>.removeClass(<span class="string">'opacity0'</span>);
});
}else {
<span class="variable">$box</span>.addClass(<span class="string">'opacity0'</span>);
<span class="variable">$box</span>.one(<span class="string">'transitionEnd, webkitTransitionEnd'</span>, function() {
<span class="variable">$box</span>.addClass(<span class="string">'hide'</span>); // 动画结束后, 隐藏盒子
});
}
});
</code></pre><p>参考:<br><a href="http://ued.ctrip.com/blog/when-on-transition-display.html" target="_blank" rel="external">http://ued.ctrip.com/blog/when-on-transition-display.html</a><br><a href="http://www.impressivewebs.com/animate-display-block-none/" target="_blank" rel="external">http://www.impressivewebs.com/animate-display-block-none/</a><br><a href="http://oli.jp/2010/css-animatable-properties/" target="_blank" rel="external">http://oli.jp/2010/css-animatable-properties/</a></p>
</div>
<footer class="article-footer">
<a data-url="http://mackxu.github.io/2016/01/17/transition-display/" data-id="cimlhic5d0003fyzqu66p8nue" class="article-share-link">Share</a>
<ul class="article-tag-list"><li class="article-tag-list-item"><a class="article-tag-list-link" href="/tags/CSS3/">CSS3</a></li><li class="article-tag-list-item"><a class="article-tag-list-link" href="/tags/transition/">transition</a></li></ul>
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</article>
<article id="post-async-script" class="article article-type-post" itemscope itemprop="blogPost">
<div class="article-meta">
<a href="/2015/08/20/async-script/" class="article-date">
<time datetime="2015-08-20T02:31:33.000Z" itemprop="datePublished">Aug 20 2015</time>
</a>
</div>
<div class="article-inner">
<header class="article-header">
<h1 itemprop="name">
<a class="article-title" href="/2015/08/20/async-script/">比较JS文件加载：async和DOM Script</a>
</h1>
</header>
<div class="article-entry" itemprop="articleBody">
<p>async与script动态加载都能使文件异步加载，本文叙述它们对页面渲染和load加载的影响方面。<br>
<p class="article-more-link">
<a href="/2015/08/20/async-script/#more">Read More</a>
</p>
</div>
<footer class="article-footer">
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</footer>
</div>
</article>
<article id="post-nano-template" class="article article-type-post" itemscope itemprop="blogPost">
<div class="article-meta">
<a href="/2015/08/19/nano-template/" class="article-date">
<time datetime="2015-08-19T10:12:36.000Z" itemprop="datePublished">Aug 19 2015</time>
</a>
</div>
<div class="article-inner">
<header class="article-header">
<h1 itemprop="name">
<a class="article-title" href="/2015/08/19/nano-template/">templateJS解说</a>
</h1>
</header>
<div class="article-entry" itemprop="articleBody">
<p>函数内巧用多行注释，实现js模板。<br>
<p class="article-more-link">
<a href="/2015/08/19/nano-template/#more">Read More</a>
</p>
</div>
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<ul class="article-tag-list"><li class="article-tag-list-item"><a class="article-tag-list-link" href="/tags/iqiyi/">iqiyi</a></li><li class="article-tag-list-item"><a class="article-tag-list-link" href="/tags/js/">js</a></li></ul>
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</article>
<article id="post-rem-simple-use" class="article article-type-post" itemscope itemprop="blogPost">
<div class="article-meta">
<a href="/2015/08/18/rem-simple-use/" class="article-date">
<time datetime="2015-08-18T13:24:59.000Z" itemprop="datePublished">Aug 18 2015</time>
</a>
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<header class="article-header">
<h1 itemprop="name">
<a class="article-title" href="/2015/08/18/rem-simple-use/">rem 在项目中的简单使用</a>
</h1>
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<div class="article-entry" itemprop="articleBody">
<p>在项目中重度使用rem<br>
<p class="article-more-link">
<a href="/2015/08/18/rem-simple-use/#more">Read More</a>
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<ul class="article-tag-list"><li class="article-tag-list-item"><a class="article-tag-list-link" href="/tags/css/">css</a></li><li class="article-tag-list-item"><a class="article-tag-list-link" href="/tags/经验/">经验</a></li></ul>
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<article id="post-image-overlay" class="article article-type-post" itemscope itemprop="blogPost">
<div class="article-meta">
<a href="/2014/09/04/image-overlay/" class="article-date">
<time datetime="2014-09-03T23:22:25.000Z" itemprop="datePublished">Sep 4 2014</time>
</a>
</div>
<div class="article-inner">
<header class="article-header">
<h1 itemprop="name">
<a class="article-title" href="/2014/09/04/image-overlay/">为图片添加半透明遮罩效果</a>
</h1>
</header>
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<p>平时为图片添加半透明遮罩效果，我的做法如下：<br>利用标签i实现背景半透明遮罩。当鼠标hover时, 提高i的背景色透明度值<code>background-color: rgba(0, 0, 0, .6)</code><br><figure class="highlight html"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="tag"><<span class="title">p</span> <span class="attribute">class</span>=<span class="value">"opacity-black-position"</span>></span><span class="tag"><<span class="title">a</span> <span class="attribute">href</span>=<span class="value">"#"</span>></span><span class="tag"><<span class="title">img</span> <span class="attribute">src</span>=<span class="value">"images/4601.jpg"</span> <span class="attribute">alt</span>=<span class="value">""</span>></span><span class="tag"><<span class="title">i</span>></span><span class="tag"></<span class="title">i</span>></span><span class="tag"></<span class="title">a</span>></span><span class="tag"></<span class="title">p</span>></span></span><br></pre></td></tr></table></figure></p>
<p>为html结构添加如下css样式：<br><figure class="highlight css"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">/* 利用标签i实现背景半透明遮罩, 兼容性不好 */</span></span><br><span class="line"><span class="class">.opacity-black-position</span> <span class="rules">{ <span class="rule"><span class="attribute">width</span>:<span class="value"> <span class="number">460px</span></span></span>; <span class="rule"><span class="attribute">height</span>:<span class="value"> <span class="number">460px</span></span></span>; <span class="rule"><span class="attribute">position</span>:<span class="value"> relative</span></span>; }</span></span><br><span class="line"><span class="class">.opacity-black-position</span> <span class="tag">i</span> <span class="rules">{ </span><br><span class="line"> <span class="rule"><span class="attribute">position</span>:<span class="value"> absolute</span></span>; <span class="rule"><span class="attribute">top</span>:<span class="value"> <span class="number">0</span></span></span>; <span class="rule"><span class="attribute">right</span>:<span class="value"> <span class="number">0</span></span></span>; <span class="rule"><span class="attribute">bottom</span>:<span class="value"> <span class="number">0</span></span></span>; <span class="rule"><span class="attribute">left</span>:<span class="value"> <span class="number">0</span></span></span>; </span><br><span class="line"> <span class="rule"><span class="attribute">background-color</span>:<span class="value"> <span class="function">rgba</span>(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>)</span></span>; </span><br><span class="line"> <span class="rule"><span class="attribute">transition</span>:<span class="value"> background-color .<span class="number">5s</span></span></span>; </span><br><span class="line">}</span></span><br><span class="line"><span class="class">.opacity-black-position</span> <span class="rule"><span class="attribute">a</span>:<span class="value">hover i { background-color: <span class="function">rgba</span>(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, .<span class="number">6</span>)</span></span>; }</span><br></pre></td></tr></table></figure></p>
<h2 id="利用opacity简单实现">利用opacity简单实现</h2><p>昨天看到京东商品图片上的半透明黑色遮罩，是这样实现的。 </p>
<p>当hover时设置图片父容器a的半透明度0.4<br><figure class="highlight html"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="tag"><<span class="title">p</span> <span class="attribute">class</span>=<span class="value">"opacity-black"</span>></span><span class="tag"><<span class="title">a</span> <span class="attribute">href</span>=<span class="value">"#"</span>></span><span class="tag"><<span class="title">img</span> <span class="attribute">src</span>=<span class="value">"images/4601.jpg"</span> <span class="attribute">alt</span>=<span class="value">""</span>></span><span class="tag"></<span class="title">a</span>></span><span class="tag"></<span class="title">p</span>></span></span><br></pre></td></tr></table></figure></p>
<p>为html结构添加如下css样式:<br><figure class="highlight css"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line"><span class="class">.opacity-black</span> <span class="rules">{ <span class="rule"><span class="attribute">width</span>:<span class="value"> <span class="number">460px</span></span></span>; <span class="rule"><span class="attribute">height</span>:<span class="value"> <span class="number">460px</span></span></span>; <span class="rule"><span class="attribute">background-color</span>:<span class="value"> <span class="hexcolor">#000</span></span></span>; }</span></span><br><span class="line"><span class="class">.opacity-black</span> <span class="tag">a</span> <span class="rules">{ <span class="rule"><span class="attribute">transition</span>:<span class="value"> opacity .<span class="number">5s</span></span></span>; <span class="rule"><span class="attribute">opacity</span>:<span class="value"> <span class="number">1</span></span></span>; }</span></span><br><span class="line"><span class="class">.opacity-black</span> <span class="rule"><span class="attribute">a</span>:<span class="value">hover { opacity: <span class="number">0.4</span></span></span>; }</span><br></pre></td></tr></table></figure></p>
<p>通过降低自身及子标签img的透明度来显示父辈容器的背景色, 达到的效果和上面是一样一样的。</p>
<p><strong>狠狠滴点这里(演示):</strong> <a href="http://codepen.io/mackxu/pen/mJtvh" target="_blank" rel="external">http://codepen.io/mackxu/pen/mJtvh</a></p>
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<article id="post-sequential-search" class="article article-type-post" itemscope itemprop="blogPost">
<div class="article-meta">
<a href="/2014/09/01/sequential-search/" class="article-date">
<time datetime="2014-09-01T09:27:21.000Z" itemprop="datePublished">Sep 1 2014</time>
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<h1 itemprop="name">
<a class="article-title" href="/2014/09/01/sequential-search/">顺序表查找算法及其优化</a>
</h1>
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<p>顺序查找算法实现如下:</p>
<pre><code>var arr = [<span class="number">5</span>, <span class="number">2</span>, <span class="number">4</span>, <span class="number">3</span>, <span class="number">1</span>]
, sequentialSearch = function(arr, val) {
var i = <span class="number">0</span>
, len = arr.length;
<span class="keyword">for</span> ( ; i < len; i++) { <span class="comment">// 比较一次</span>
<span class="keyword">if</span> (arr[i] === val) { <span class="comment">// 比较二次</span>
<span class="keyword">return</span> i;
}
}
<span class="keyword">return</span> i; <span class="comment">// 返回len,则说明查找失败</span>
}
</code></pre><p>这里并不是足够完美, 因为每次循环时都需要对i是否越界, 即是否小于len做判断。事实上，还可以有更好的办法，设置一个哨兵, 就可以解决不需要每次让i与len做比较了。</p>
<h2 id="顺序表查找优化">顺序表查找优化</h2><pre><code><span class="keyword">var</span> arr = [<span class="number">5</span>, <span class="number">2</span>, <span class="number">4</span>, <span class="number">3</span>, <span class="number">1</span>]
<span class="comment">// 有哨兵的顺序表查找</span>
, sequentialSearchOpt = function(arr, <span class="function"><span class="keyword">val</span>) {</span>
<span class="keyword">var</span> i = <span class="number">0</span>
, arr = arr.slice(<span class="number">0</span>) <span class="comment">// 保证函数内操作不影响外部的arr数组 </span>
, len = arr.length;
arr[len] = <span class="function"><span class="keyword">val</span>;</span> <span class="comment">// 设置arr[len]为关键字值作为哨兵</span>
<span class="comment">// arr.push(val);</span>
<span class="keyword">while</span> (arr[i] !== <span class="function"><span class="keyword">val</span>) {</span> <span class="comment">// 比较一次</span>
i++;
}
<span class="keyword">return</span> i; <span class="comment">// 返回len,则说明查找失败</span>
}
</code></pre><p>如果arr[i]中有值等于val则返回i，否则一定会在循环结束处等于val, 此时返回len值。说明数组中没有关键字等于val,查找失败。</p>
<blockquote>
<p>在测试过程中, 发现因为由于对象是按地址传递的，在函数中改变数组<code>arr[len] = val</code>会影响到外部的数组，因此需要在函数内clone一份数组出来</p>
</blockquote>
<p>这种在查找方向的尽头设置‘哨兵’免去了在查找过程中每一次比较后都要判断查找位置是否越界的小技巧，看似与原先差别不大，但在总数较多时，效率提高很大，是非常好的编程技巧。</p>
<p><strong>参考：</strong> 大话数据结构 </p>
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<time datetime="2014-08-22T08:16:07.000Z" itemprop="datePublished">Aug 22 2014</time>
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<a class="article-title" href="/2014/08/22/analyticsjs/">google-analytics的使用 解析页面引入代码</a>
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<h2 id="代码整理和注释">代码整理和注释</h2><pre><code><span class="comment">// 创建ga()方法, 加载analytics.js文件</span>
<span class="comment">// a, m 作为形参，确保下面的执行不会修改外部的同名变量</span>
(function(<span class="keyword">win</span>, doc, o, <span class="keyword">g</span>, ga, a , <span class="keyword">m</span>){
<span class="keyword">win</span>['GoogleAnalyticsObject'] = ga; <span class="comment">// 向外暴露出ga对象</span>
<span class="comment">// 确保只执行一次analytics.js的插入</span>
<span class="keyword">win</span>[ga] = <span class="keyword">win</span>[ga] || function() {
(<span class="keyword">win</span>[ga].q = <span class="keyword">win</span>[ga].q || []).push(arguments)},
<span class="keyword">win</span>[ga].<span class="keyword">l</span> = 1 * new <span class="literal">Date</span>(); <span class="comment">// 把时间格式转换成数字型</span>
<span class="comment">// 动态加载analytics.js</span>
a = doc.createElement(o),
<span class="keyword">m</span> = doc.getElementsByTagName(o)[0]; <span class="comment">// script</span>
a.async = 1;
a.src = <span class="keyword">g</span>;
<span class="keyword">m</span>.parentNode.insertBefore(a, <span class="keyword">m</span>);
})(<span class="keyword">window</span>, document, 'script','<span class="comment">//www.google-analytics.com/analytics.js','ga');</span>
</code></pre><p>短短的代码, 还是蛮有货的，呵呵。 </p>
<h2 id="压缩的代码">压缩的代码</h2><pre><code><span class="list">(<span class="keyword">function</span><span class="list">(<span class="keyword">i</span>,s,o,g,r,a,m)</span><span class="collection">{i<span class="collection">['GoogleAnalyticsObject']</span>=r;i<span class="collection">[r]</span>=i<span class="collection">[r]</span>||function<span class="list">()</span><span class="collection">{<span class="list">(<span class="keyword">i</span><span class="collection">[r]</span>.q=i<span class="collection">[r]</span>.q||<span class="collection">[]</span>)</span>.push<span class="list">(<span class="keyword">arguments</span>)</span>}</span>,i<span class="collection">[r]</span>.l=1*new Date<span class="list">()</span><span class="comment">;a=s.createElement(o),m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)})(window,document,'script','//www.google-analytics.com/analytics.js','ga');</span></span></span>
</code></pre><p>参考: <a href="https://developers.google.com/analytics/devguides/collection/analyticsjs/advanced?hl=zh-TW" target="_blank" rel="external">https://developers.google.com/analytics/devguides/collection/analyticsjs/advanced?hl=zh-TW</a></p>
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<time datetime="2014-07-20T23:58:53.000Z" itemprop="datePublished">Jul 21 2014</time>
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<a class="article-title" href="/2014/07/21/array-unique/">JS数组去重比较</a>
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<p>数组去重复是一个常见的需求，我们暂时考虑同类型的数组去重复。主要是理清思路和考虑执行性能。<br>
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