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213 lines
21 KiB
HTML
213 lines
21 KiB
HTML
<article class="" id="post-">
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<header class="entry-header">
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<h1 class="entry-title">.removeClass()</h1>
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<div class="entry-meta">
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所属分类：<span class="category"><a href="/category/attributes/">DOM 属性</a></span><span class="category-divider"> | </span><span class="category"><a href="/category/manipulation/">DOM 操作</a> > <a href="/category/manipulation/class-attribute/">class 属性</a></span><span class="category-divider"> | </span><span class="category"><a href="/category/css/">CSS</a></span>
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<span class="pull-right">英文文档：<a href="https://api.jquery123.com/removeClass/" target="_blank">.removeClass()</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="removeClass1"><h2 class="section-title">
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<span class="name">.removeClass( [className ] )</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>移除集合中每个匹配元素上一个，多个或全部样式。</p>
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<ul class="signatures">
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<li class="signature" id="removeClass-className">
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<h4 class="name">
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<span class="version-details">添加的版本: <a href="/category/version/1.0/">1.0</a></span>.removeClass( [className ] )</h4>
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<ul><li>
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<div><strong>className</strong></div>
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<div>类型: <a href="/Types/#String">String</a>
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</div>
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<div>每个匹配元素移除的一个或多个用空格隔开的样式名。</div>
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</li></ul>
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</li>
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<li class="signature" id="removeClass-functionindex--class">
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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>.removeClass( function(index, class) )</h4>
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<ul><li>
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<div><strong>function(index, class)</strong></div>
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<div>类型: <a href="/Types/#Function">Function</a>()</div>
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<div>一个函数，返回一个或多个将要被移除的样式名。index 参数表示在所有匹配元素的集合中当前元素的索引位置。class 参数表示原有的样式名。</div>
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</li></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>如果一个样式类名作为一个参数,只有这样式类会被从匹配的元素集合中删除 。 如果没有样式名作为参数，那么所有的样式类将被移除。</p>
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<p>从所有匹配的每个元素中同时移除多个用空格隔开的样式类 ，像这样:</p>
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<div class="syntaxhighlighter javascript nogutter">
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<table>
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<div class="line n1">1</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>$(<span class="string">'p'</span>).removeClass(<span class="string">'myClass yourClass'</span>)</code></div></div></pre>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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<p>这个方法通常和 <code>.addClass()</code> 一起使用用来切换元素的样式, 像这样：</p>
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<div class="syntaxhighlighter javascript nogutter">
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<table>
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<tbody>
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<tr>
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<td class="gutter">
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<div class="line n1">1</div>
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<td class="code">
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<pre><div class="container"><div class="line"><code>$(<span class="string">'p'</span>).removeClass(<span class="string">'myClass noClass'</span>).addClass(<span class="string">'yourClass'</span>);</code></div></div></pre>
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</td>
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</tr>
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</table>
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</div>
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<p>这里从所有段落删除 <code>myClass</code> 和 <code>noClass</code> 样式类, 然后 <code>yourClass</code> 样式被添加。</p>
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<p>用其他样式类替换现有的样式类，我们可以使是有 <code>.attr('class', 'newClass')</code> 替换.</p>
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<p>从 jQuery 1.4开始， <code>.removeClass()</code> 方法允许我们指定一个函数作为参数，返回将要被删除的样式。</p>
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<div class="syntaxhighlighter javascript nogutter">
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<table>
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<td class="code">
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<pre><div class="container"><div class="line"><code>$(<span class="string">'li:last'</span>).removeClass(<span class="keyword">function</span>() {</code></div></div><div class="container"><div class="line"><code> <span class="keyword">return</span> $(<span class="keyword">this</span>).prev().attr(<span class="string">'class'</span>);</code></div></div><div class="container"><div class="line"><code>});</code></div></div></pre>
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</td>
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</tbody>
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</table>
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</div>
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<p>上例中，移除了最后一个 <code><li></code> 的样式，该样式是倒数第二个 <code><li></code> 的样式。</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>Example: <span class="desc">从匹配的元素中移除“blue”样式类。</span>
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</h4>
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<div class="syntaxhighlighter xml ">
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<table>
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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> </code></div></div><div class="container"><div class="line"><code> <span class="tag">p</span> <span class="rules">{ <span class="rule"><span class="attribute">margin</span>:<span class="value"> <span class="number">4</span>px;</span></span> <span class="rule"><span class="attribute">font-size</span>:<span class="value"><span class="number">16</span>px;</span></span> <span class="rule"><span class="attribute">font-weight</span>:<span class="value">bolder;</span></span> <span class="rule">}</span></span></code></div></div><div class="container"><div class="line"><code> <span class="class">.blue</span> <span class="rules">{ <span class="rule"><span class="attribute">color</span>:<span class="value">blue;</span></span> <span class="rule">}</span></span></code></div></div><div class="container"><div class="line"><code> <span class="class">.under</span> <span class="rules">{ <span class="rule"><span class="attribute">text-decoration</span>:<span class="value">underline;</span></span> <span class="rule">}</span></span></code></div></div><div class="container"><div class="line"><code> <span class="class">.highlight</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="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">p</span> <span class="attribute">class</span>=<span class="value">"blue under"</span>></span>Hello<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 class="attribute">class</span>=<span class="value">"blue under highlight"</span>></span>and<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 class="attribute">class</span>=<span class="value">"blue under"</span>></span>then<span class="tag"></<span class="title">p</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">p</span> <span class="attribute">class</span>=<span class="value">"blue under"</span>></span>Goodbye<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">script</span>></span><span class="javascript">$(<span class="string">"p:even"</span>).removeClass(<span class="string">"blue"</span>);</span><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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</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>
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<div class="entry-example" id="example-1">
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<h4>Example: <span class="desc">从匹配的元素中移除“blue”和“under”样式类。</span>
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</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>
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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="rules">{ <span class="rule"><span class="attribute">margin</span>:<span class="value"> <span class="number">4</span>px;</span></span> <span class="rule"><span class="attribute">font-size</span>:<span class="value"><span class="number">16</span>px;</span></span> <span class="rule"><span class="attribute">font-weight</span>:<span class="value">bolder;</span></span> <span class="rule">}</span></span></code></div></div><div class="container"><div class="line"><code> <span class="class">.blue</span> <span class="rules">{ <span class="rule"><span class="attribute">color</span>:<span class="value">blue;</span></span> <span class="rule">}</span></span></code></div></div><div class="container"><div class="line"><code> <span class="class">.under</span> <span class="rules">{ <span class="rule"><span class="attribute">text-decoration</span>:<span class="value">underline;</span></span> <span class="rule">}</span></span></code></div></div><div class="container"><div class="line"><code> <span class="class">.highlight</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="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">p</span> <span class="attribute">class</span>=<span class="value">"blue under"</span>></span>Hello<span class="tag"></<span class="title">p</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">p</span> <span class="attribute">class</span>=<span class="value">"blue under highlight"</span>></span>and<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 class="attribute">class</span>=<span class="value">"blue under"</span>></span>then<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 class="attribute">class</span>=<span class="value">"blue under"</span>></span>Goodbye<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">script</span>></span><span class="javascript">$(<span class="string">"p:odd"</span>).removeClass(<span class="string">"blue under"</span>);</span><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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</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>
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<div class="entry-example" id="example-2">
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<h4>Example: <span class="desc">从匹配的元素中移除所有样式类。</span>
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</h4>
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<div class="syntaxhighlighter xml ">
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<table>
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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> </code></div></div><div class="container"><div class="line"><code> <span class="tag">p</span> <span class="rules">{ <span class="rule"><span class="attribute">margin</span>:<span class="value"> <span class="number">4</span>px;</span></span> <span class="rule"><span class="attribute">font-size</span>:<span class="value"><span class="number">16</span>px;</span></span> <span class="rule"><span class="attribute">font-weight</span>:<span class="value">bolder;</span></span> <span class="rule">}</span></span></code></div></div><div class="container"><div class="line"><code> <span class="class">.blue</span> <span class="rules">{ <span class="rule"><span class="attribute">color</span>:<span class="value">blue;</span></span> <span class="rule">}</span></span></code></div></div><div class="container"><div class="line"><code> <span class="class">.under</span> <span class="rules">{ <span class="rule"><span class="attribute">text-decoration</span>:<span class="value">underline;</span></span> <span class="rule">}</span></span></code></div></div><div class="container"><div class="line"><code> <span class="class">.highlight</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="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">p</span> <span class="attribute">class</span>=<span class="value">"blue under"</span>></span>Hello<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 class="attribute">class</span>=<span class="value">"blue under highlight"</span>></span>and<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 class="attribute">class</span>=<span class="value">"blue under"</span>></span>then<span class="tag"></<span class="title">p</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">p</span> <span class="attribute">class</span>=<span class="value">"blue under"</span>></span>Goodbye<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">script</span>></span><span class="javascript">$(<span class="string">"p:eq(1)"</span>).removeClass();</span><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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</div>
|
||
<h4>Demo:</h4>
|
||
<div class="demo code-demo"></div>
|
||
</div></section>
|
||
</div></article> </div>
|
||
</article> |