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50 lines
2.5 KiB
HTML
50 lines
2.5 KiB
HTML
<article class="" id="post-">
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<header class="entry-header">
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<h1 class="entry-title">jQuery.isEmptyObject()</h1>
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<div class="entry-meta">
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所属分类：<span class="category"><a href="/category/utilities/">工具类</a></span>
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<span class="pull-right">英文文档：<a href="https://api.jquery123.com/jQuery.isEmptyObject/" target="_blank">jQuery.isEmptyObject()</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="jQuery-isEmptyObject1"><h2 class="section-title">
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<span class="name">jQuery.isEmptyObject( object )</span><span class="returns">返回: <a href="/Types/#Boolean">Boolean</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>检查对象是否为空（不包含任何属性）。</p>
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<ul class="signatures"><li class="signature" id="jQuery-isEmptyObject-object">
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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>jQuery.isEmptyObject( object )</h4>
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<ul><li>
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<div><strong>object</strong></div>
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<div>类型: <a href="/Types/#Object">Object</a>
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</div>
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<div>将要检查是否为空的对象。</div>
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</li></ul>
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</li></ul>
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<div class="longdesc" id="entry-longdesc">
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<p>从 jQuery 1.4 开始，这个方法既检测对象本身的属性，也检测从原型继承的属性（因此没有使用hasOwnProperty）。参数应当是一个普通的JavaScript对象，
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对于其他类型的对象（DOM元素，原始strings/numbers，host对象）在跨浏览器中可能无法提供一致的结果。
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要确定一个对象是否是一个普通的JavaScript对象，使用<a href="/jQuery.isPlainObject"><code>$.isPlainObject()</code></a></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">检查一个对象是否为空对象。</span></h4>
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<div class="syntaxhighlighter javascript ">
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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 class="code">
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<pre><div class="container"><div class="line"><code>jQuery.isEmptyObject({}) <span class="comment">// true</span></code></div></div><div class="container"><div class="line"><code> jQuery.isEmptyObject({ foo: <span class="string">"bar"</span> }) <span class="comment">// false</span></code></div></div></pre>
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