uTools-Manuals/docs/jQuery/callbacks.add.html

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<h1 class="entry-title">callbacks.add()</h1>
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						所属分类：<span class="category"><a href="/category/callbacks-object/">回调对象</a></span>
<span class="pull-right">英文文档：<a href="https://api.jquery123.com/callbacks.add/" target="_blank">callbacks.add()</a></span>
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<span class="name">callbacks.add( callbacks )</span><span class="returns">返回: <a href="/Types/#Callbacks">Callbacks</a></span>
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<p class="desc"><strong>描述: </strong>回调列表中添加一个回调或回调的集合。</p>
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<span class="version-details">添加的版本: <a href="/category/version/1.7/">1.7</a></span>callbacks.add( callbacks )</h4>
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<div><strong>callbacks</strong></div>
<div>类型: <a href="/Types/#Function,%20Array">Function, Array</a>
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<div>一个函数，或者一个函数数组，用来添加到回调列表。</div>
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<p>此方法返回绑定它的那个回调对象(<code>this</code>).</p>
<h2 id="example-1">Example</h2>
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			    使用 <code>callbacks.add()</code> 添加新的回调到回调列表：</p>
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<pre><div class="container"><div class="line"><code><span class="comment">// a sample logging function to be added to a callbacks list</span></code></div></div><div class="container"><div class="line"><code><span class="keyword">var</span> foo = <span class="keyword">function</span>( value ) {</code></div></div><div class="container"><div class="line"><code>  console.log( <span class="string">"foo: "</span> + value );</code></div></div><div class="container"><div class="line"><code>};</code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="comment">// another function to also be added to the list</span></code></div></div><div class="container"><div class="line"><code><span class="keyword">var</span> bar = <span class="keyword">function</span>( value ){</code></div></div><div class="container"><div class="line"><code>  console.log( <span class="string">"bar: "</span> + value );</code></div></div><div class="container"><div class="line"><code>};</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> callbacks = $.Callbacks();</code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="comment">// add the function "foo" to the list</span></code></div></div><div class="container"><div class="line"><code>callbacks.add( foo );</code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="comment">// fire the items on the list</span></code></div></div><div class="container"><div class="line"><code>callbacks.fire( <span class="string">"hello"</span> );</code></div></div><div class="container"><div class="line"><code><span class="comment">// outputs: "foo: hello"</span></code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="comment">// add the function "bar" to the list</span></code></div></div><div class="container"><div class="line"><code>callbacks.add( bar );</code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="comment">// fire the items on the list again</span></code></div></div><div class="container"><div class="line"><code>callbacks.fire( <span class="string">"world"</span> );</code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="comment">// outputs:</span></code></div></div><div class="container"><div class="line"><code><span class="comment">// "foo: world"</span></code></div></div><div class="container"><div class="line"><code><span class="comment">// "bar: world"</span></code></div></div></pre>
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