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fofolee
115 lines
10 KiB
HTML
115 lines
10 KiB
HTML
<article class="" id="post-">
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<header class="entry-header">
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<h1 class="entry-title">.prevUntil()</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/tree-traversal/">树遍历</a></span>
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<span class="pull-right">英文文档：<a href="https://api.jquery123.com/prevUntil/" target="_blank">.prevUntil()</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="prevUntil1"><h2 class="section-title">
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<span class="name">.prevUntil( [selector ] [, filter ] )</span><span class="returns">返回: <a href="/Types/#jQuery">jQuery</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>
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获取每个元素但不包括选择器，DOM节点，或者jQuery对象匹配的元素的所有前面的兄弟元素。</p>
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<ul class="signatures">
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<li class="signature" id="prevUntil-selector-filter">
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<h4 class="name">
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<span class="version-details">添加的版本: <a href="/category/version/1.4/">1.4</a></span>.prevUntil( [selector ] [, filter ] )</h4>
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<ul>
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<li>
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<div><strong>selector</strong></div>
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<div>类型: <a href="/Types/#Selector">Selector</a>
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</div>
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<div>选择器字符串，用于确定到哪个排在前面的同辈元素时停止匹配</div>
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</li>
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<li>
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<div><strong>filter</strong></div>
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<div>类型: <a href="/Types/#Selector">Selector</a>
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</div>
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<div>一个字符串，其中包含一个选择器表达式用来匹配的元素。</div>
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</li>
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</ul>
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</li>
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<li class="signature" id="prevUntil-element-filter">
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<h4 class="name">
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<span class="version-details">添加的版本: <a href="/category/version/1.6/">1.6</a></span>.prevUntil( [element ] [, filter ] )</h4>
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<ul>
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<li>
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<div><strong>element</strong></div>
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<div>类型: <a href="/Types/#Element">Element</a>
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</div>
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<div>一个DOM节点或jQuery对象说明哪里开始停止匹配接下来的同级元素。</div>
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</li>
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<li>
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<div><strong>filter</strong></div>
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<div>类型: <a href="/Types/#Selector">Selector</a>
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</div>
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<div>一个字符串，其中包含一个选择器表达式用来匹配的元素。</div>
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</li>
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</ul>
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</li>
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</ul>
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<div class="longdesc" id="entry-longdesc">
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<p>如果提供的jQuery代表了一组DOM元素， <code>.prevUntil()</code> 方法会找遍所有元素所在的DOM树中排在它们前面的元素，直到遇到了一个跟提供的参数匹配的元素的时候才会停下来。这个新jQuery对象里包含了前面所有找到的同辈元素，但不包括提供给 <code>.prevUntil()</code> 的选择器匹配到的元素。返回的元素顺序是从最靠近的兄弟元素到最远的兄弟元素。</p>
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<p>如果提供的选择器没有匹配到任何东西，或者干脆没有提供选择器，那么排在前面的所有同辈元素都会被选中。这就跟用没有提供参数的 <a href="/prevAll"><code>.prevAll()</code></a> 效果一样。</p>
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<p><strong>从 jQuery 1.6 开始</strong>, 一个DOM节点或jQuery对象，
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而不是一个选择器，
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可被传递到<code>.prevUntil()</code>方法。</p>
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<p>该方法选择性地接受一个选择器表达式作为它的第二个参数。如果提供此参数，将通过测试它们是否匹配过滤元素。</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">Find the siblings that precede <dt id="term-2"> up to the preceding <dt> and give them a red background color. Also, find previous <dd> siblings of <dt id="term-3"> up to <dt id="term-1"> and give them a green text color.</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">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">dl</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">dt</span> <span class="attribute">id</span>=<span class="value">"term-1"</span>></span>term 1<span class="tag"></<span class="title">dt</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">dd</span>></span>definition 1-a<span class="tag"></<span class="title">dd</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">dd</span>></span>definition 1-b<span class="tag"></<span class="title">dd</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">dd</span>></span>definition 1-c<span class="tag"></<span class="title">dd</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">dd</span>></span>definition 1-d<span class="tag"></<span class="title">dd</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">dt</span> <span class="attribute">id</span>=<span class="value">"term-2"</span>></span>term 2<span class="tag"></<span class="title">dt</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">dd</span>></span>definition 2-a<span class="tag"></<span class="title">dd</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">dd</span>></span>definition 2-b<span class="tag"></<span class="title">dd</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">dd</span>></span>definition 2-c<span class="tag"></<span class="title">dd</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">dt</span> <span class="attribute">id</span>=<span class="value">"term-3"</span>></span>term 3<span class="tag"></<span class="title">dt</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">dd</span>></span>definition 3-a<span class="tag"></<span class="title">dd</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">dd</span>></span>definition 3-b<span class="tag"></<span class="title">dd</span>></span></code></div></div><div class="container"><div class="line"><code><span class="tag"></<span class="title">dl</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>$(<span class="string">"#term-2"</span>).prevUntil(<span class="string">"dt"</span>)</code></div></div><div class="container"><div class="line"><code> .css(<span class="string">"background-color"</span>, <span class="string">"red"</span>);</code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="keyword">var</span> term1 = document.getElementById(<span class="string">'term-1'</span>);</code></div></div><div class="container"><div class="line"><code>$(<span class="string">"#term-3"</span>).prevUntil(term1, <span class="string">"dd"</span>)</code></div></div><div class="container"><div class="line"><code> .css(<span class="string">"color"</span>, <span class="string">"green"</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" data-height="250px"></div>
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</div></section>
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</div></article> </div>
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</article> |