mirror of
https://github.com/fofolee/uTools-Manuals.git
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74 lines
8.5 KiB
HTML
74 lines
8.5 KiB
HTML
<article class="" id="post-">
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<header class="entry-header">
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<h1 class="entry-title">:only-child Selector</h1>
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<div class="entry-meta">
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所属分类：<span class="category"><a href="/category/selectors/">选择器</a> > <a href="/category/selectors/child-filter-selectors/">子元素过滤</a></span>
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<span class="pull-right">英文文档：<a href="https://api.jquery123.com/only-child-selector/" target="_blank">:only-child Selector</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 selector" id="only-child1"><h2 class="section-title"><span>only-child selector</span></h2>
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<div class="entry-wrapper">
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<p class="desc"><strong>描述: </strong>如果某个元素是其父元素的唯一子元素，那么它就会被选中。</p>
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<ul class="signatures"><li class="signature"><h4 class="name">
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<span class="version-details">添加的版本: <a href="/category/version/1.1.4/">1.1.4</a></span>jQuery( ":only-child" )</h4></li></ul>
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<div class="longdesc" id="entry-longdesc">
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<p>若父元素有其他子元素，就不会被匹配。</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><span class="desc">若每个 div 中只有一个按钮，则改变这些按钮的外观。</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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</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">div</span> <span class="rules">{ <span class="rule"><span class="attribute">width</span>:<span class="value"><span class="number">100</span>px;</span></span> <span class="rule"><span class="attribute">height</span>:<span class="value"><span class="number">80</span>px;</span></span> <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">float</span>:<span class="value">left;</span></span> <span class="rule"><span class="attribute">background</span>:<span class="value"><span class="hexcolor">#b9e</span> }</span></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> <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">button</span>></span>Sibling!<span class="tag"></<span class="title">button</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">button</span>></span>Sibling!<span class="tag"></<span class="title">button</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">div</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">button</span>></span>Sibling!<span class="tag"></<span class="title">button</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> None</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">div</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">button</span>></span>Sibling!<span class="tag"></<span class="title">button</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">button</span>></span>Sibling!<span class="tag"></<span class="title">button</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">button</span>></span>Sibling!<span class="tag"></<span class="title">button</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></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">button</span>></span>Sibling!<span class="tag"></<span class="title">button</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">script</span>></span><span class="javascript"></span></code></div></div><div class="container"><div class="line"><code> $(<span class="string">"div button:only-child"</span>).text(<span class="string">"Alone"</span>).css(<span class="string">"border"</span>, <span class="string">"2px blue solid"</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> |