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134 lines
15 KiB
HTML
134 lines
15 KiB
HTML
<article class="" id="post-">
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<header class="entry-header">
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<h1 class="entry-title">.andSelf()</h1>
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<div class="entry-meta">
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所属分类：<span class="category"><a href="/category/traversing/">遍历</a> > <a href="/category/traversing/miscellaneous-traversal/">其它遍历</a></span><span class="category-divider"> | </span><span class="category"><a href="/category/deprecated/">弃用</a> > <a href="/category/deprecated/deprecated-1.8/">1.8 版本弃用的 API</a></span><span class="category-divider"> | </span><span class="category"><a href="/category/removed/">已删除的函数</a></span>
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<span class="pull-right">英文文档：<a href="https://api.jquery123.com/andSelf/" target="_blank">.andSelf()</a></span>
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</div><!-- .entry-meta -->
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</header><!-- .entry-header -->
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<!-- .entry-header -->
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<div class="entry-content">
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<article class="entry method" id="andSelf1"><h2 class="section-title">
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<span class="name">.andSelf()</span><span class="returns">返回: <a href="/Types/#jQuery">jQuery</a></span><span class="version-details">version deprecated: <a href="/category/version/1.8/">1.8</a></span>
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</h2>
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<div class="entry-wrapper">
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<p class="desc"><strong>描述: </strong>添加先前的堆栈元素集合到当前组合。</p>
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<ul class="signatures"><li class="signature" id="andSelf">
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<h4 class="name">
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<span class="version-details">添加的版本: <a href="/category/version/1.2/">1.2</a></span>.andSelf()</h4>
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<ul><li><div class="null-signature">这个方法不接受任何参数</div></li></ul>
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</li></ul>
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<div class="longdesc" id="entry-longdesc">
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<p><strong>注意:</strong>
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此函数已过时，现在是<a href="/addBack"><code>.addBack()</code></a>的一个别名。在jQuery1.8和更高版本中应使用<a href="/addBack"><code>.addBack()</code></a>。</p>
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<p>如上所述在讨论中的<code><a href="/end">.end()</a></code>， jQuery对象维护一个堆栈内部来跟踪匹配的元素集合的变化。当一个DOM遍历方法被调用时，新的元素集合推入到堆栈中。 如果还需要包含先前的元素集合，<code>.andSelf()</code> 可以提供帮助。</p>
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<p>考虑一个页面，一个简单的列表就可以了：</p>
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<div class="syntaxhighlighter xml nogutter">
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<table>
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<tbody>
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<tr>
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<td class="gutter">
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<div class="line n1">1</div>
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<div class="line n2">2</div>
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<div class="line n3">3</div>
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<div class="line n4">4</div>
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<div class="line n5">5</div>
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<div class="line n6">6</div>
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<div class="line n7">7</div>
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</td>
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<td class="code">
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<pre><div class="container"><div class="line"><code><span class="tag"><<span class="title">ul</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">li</span>></span>list item 1<span class="tag"></<span class="title">li</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">li</span>></span>list item 2<span class="tag"></<span class="title">li</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">li</span> <span class="attribute">class</span>=<span class="value">"third-item"</span>></span>list item 3<span class="tag"></<span class="title">li</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">li</span>></span>list item 4<span class="tag"></<span class="title">li</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">li</span>></span>list item 5<span class="tag"></<span class="title">li</span>></span></code></div></div><div class="container"><div class="line"><code><span class="tag"></<span class="title">ul</span>></span></code></div></div></pre>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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<p>下面的代码的返回结果是后面的3，4和5列表背景被改变成红色：</p>
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<div class="syntaxhighlighter javascript nogutter">
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<table>
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<tbody>
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<tr>
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<td class="gutter">
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<div class="line n1">1</div>
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<div class="line n2">2</div>
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</td>
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<td class="code">
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<pre><div class="container"><div class="line"><code>$(<span class="string">'li.third-item'</span>).nextAll().andSelf()</code></div></div><div class="container"><div class="line"><code> .css(<span class="string">'background-color'</span>, <span class="string">'red'</span>);</code></div></div></pre>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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<p>
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首先，初始选择位于第3项，初始化堆栈集合只包含这项。调用<code>.nextAll() </code>后将第4和第5项推入堆栈。最后，调用<code>.andSelf()</code> 合并这两个组元素在一起，创建一个jQuery对象，指向所有三个项元素（按照文档中的顺序）：<code>{[<li.third-item>,<li>,<li> ]}</code>
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</p>
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</div>
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<section class="entry-examples" id="entry-examples"><header><h2 class="underline">例子:</h2></header><div class="entry-example" id="example-0">
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<h4>
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<span class="desc">
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<code>.andSelf()</code>方法导致以前遍历堆栈中的DOM元素被添加到当前组。
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在第一个例子中，堆栈包含组的结果来自<code>.find("p")</code>。
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在第二个例子中，<code>.andSelf()</code>将之前组的元素添加到堆栈中 -
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在这种情况下（<code>$("div.after-andSelf")</code> - 到当前集合，
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选择了两个div和其封闭的段落。
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</span></h4>
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<div class="syntaxhighlighter xml ">
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<table>
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<tbody>
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<tr>
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<td class="gutter">
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<div class="line n1">1</div>
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<div class="line n2">2</div>
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<div class="line n3">3</div>
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<div class="line n4">4</div>
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<div class="line n5">5</div>
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<div class="line n6">6</div>
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<div class="line n7">7</div>
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<div class="line n8">8</div>
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<div class="line n9">9</div>
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<div class="line n10">10</div>
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<div class="line n11">11</div>
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<div class="line n12">12</div>
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<div class="line n13">13</div>
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<div class="line n14">14</div>
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<div class="line n15">15</div>
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<div class="line n16">16</div>
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<div class="line n17">17</div>
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<div class="line n18">18</div>
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<div class="line n19">19</div>
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<div class="line n20">20</div>
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<div class="line n21">21</div>
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<div class="line n22">22</div>
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<div class="line n23">23</div>
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<div class="line n24">24</div>
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<div class="line n25">25</div>
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<div class="line n26">26</div>
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<div class="line n27">27</div>
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<div class="line n28">28</div>
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<div class="line n29">29</div>
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<div class="line n30">30</div>
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<div class="line n31">31</div>
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<div class="line n32">32</div>
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<div class="line n33">33</div>
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<div class="line n34">34</div>
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<div class="line n35">35</div>
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<div class="line n36">36</div>
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<div class="line n37">37</div>
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<div class="line n38">38</div>
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<div class="line n39">39</div>
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<div class="line n40">40</div>
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<div class="line n41">41</div>
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</td>
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<td class="code">
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<pre><div class="container"><div class="line"><code><span class="doctype"><!DOCTYPE html></span></code></div></div><div class="container"><div class="line"><code><span class="tag"><<span class="title">html</span>></span></code></div></div><div class="container"><div class="line"><code><span class="tag"><<span class="title">head</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">style</span>></span><span class="css"></span></code></div></div><div class="container"><div class="line"><code><span class="tag">p</span>, <span class="tag">div</span> <span class="rules">{ <span class="rule"><span class="attribute">margin</span>:<span class="value"><span class="number">5</span>px;</span></span> <span class="rule"><span class="attribute">padding</span>:<span class="value"><span class="number">5</span>px;</span></span> <span class="rule">}</span></span></code></div></div><div class="container"><div class="line"><code><span class="class">.border</span> <span class="rules">{ <span class="rule"><span class="attribute">border</span>:<span class="value"> <span class="number">2</span>px solid red;</span></span> <span class="rule">}</span></span></code></div></div><div class="container"><div class="line"><code><span class="class">.background</span> <span class="rules">{ <span class="rule"><span class="attribute">background</span>:<span class="value">yellow;</span></span> <span class="rule">}</span></span></code></div></div><div class="container"><div class="line"><code><span class="class">.left</span>, <span class="class">.right</span> <span class="rules">{ <span class="rule"><span class="attribute">width</span>:<span class="value"> <span class="number">45</span>%;</span></span> <span class="rule"><span class="attribute">float</span>:<span class="value"> left;</span></span><span class="rule">}</span></span></code></div></div><div class="container"><div class="line"><code><span class="class">.right</span> <span class="rules">{ <span class="rule"><span class="attribute">margin-left</span>:<span class="value"><span class="number">3</span>%;</span></span> <span class="rule">}</span></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">style</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">script</span> <span class="attribute">src</span>=<span class="value">"https://code.jquery.com/jquery-latest.js"</span>></span><span class="javascript"></span><span class="tag"></<span class="title">script</span>></span></code></div></div><div class="container"><div class="line"><code><span class="tag"></<span class="title">head</span>></span></code></div></div><div class="container"><div class="line"><code><span class="tag"><<span class="title">body</span>></span></code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="tag"><<span class="title">div</span> <span class="attribute">class</span>=<span class="value">"left"</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">p</span>></span><span class="tag"><<span class="title">strong</span>></span>Before <span class="tag"><<span class="title">code</span>></span>andSelf()<span class="tag"></<span class="title">code</span>></span><span class="tag"></<span class="title">strong</span>></span><span class="tag"></<span class="title">p</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">div</span> <span class="attribute">class</span>=<span class="value">"before-andself"</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">p</span>></span>First Paragraph<span class="tag"></<span class="title">p</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">p</span>></span>Second Paragraph<span class="tag"></<span class="title">p</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">div</span>></span></code></div></div><div class="container"><div class="line"><code><span class="tag"></<span class="title">div</span>></span></code></div></div><div class="container"><div class="line"><code><span class="tag"><<span class="title">div</span> <span class="attribute">class</span>=<span class="value">"right"</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">p</span>></span><span class="tag"><<span class="title">strong</span>></span>After <span class="tag"><<span class="title">code</span>></span>andSelf()<span class="tag"></<span class="title">code</span>></span><span class="tag"></<span class="title">strong</span>></span><span class="tag"></<span class="title">p</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">div</span> <span class="attribute">class</span>=<span class="value">"after-andself"</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">p</span>></span>First Paragraph<span class="tag"></<span class="title">p</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">p</span>></span>Second Paragraph<span class="tag"></<span class="title">p</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">div</span>></span></code></div></div><div class="container"><div class="line"><code><span class="tag"></<span class="title">div</span>></span></code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="tag"><<span class="title">script</span>></span><span class="javascript"></span></code></div></div><div class="container"><div class="line"><code>$(<span class="string">"div.left, div.right"</span>).find(<span class="string">"div, div > p"</span>).addClass(<span class="string">"border"</span>);</code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="comment">// First Example</span></code></div></div><div class="container"><div class="line"><code>$(<span class="string">"div.before-andself"</span>).find(<span class="string">"p"</span>).addClass(<span class="string">"background"</span>);</code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="comment">// Second Example</span></code></div></div><div class="container"><div class="line"><code>$(<span class="string">"div.after-andself"</span>).find(<span class="string">"p"</span>).andSelf().addClass(<span class="string">"background"</span>);</code></div></div><div class="container"><div class="line"><code><span class="tag"></<span class="title">script</span>></span></code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="tag"></<span class="title">body</span>></span></code></div></div><div class="container"><div class="line"><code><span class="tag"></<span class="title">html</span>></span></code></div></div></pre>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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<h4>Demo:</h4>
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<div class="demo code-demo"></div>
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</div></section>
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</div></article> </div>
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</article> |