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61 lines
3.6 KiB
HTML
61 lines
3.6 KiB
HTML
<article class="" id="post-">
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<header class="entry-header">
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<h1 class="entry-title">deferred.fail()</h1>
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<div class="entry-meta">
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所属分类：<span class="category"><a href="/category/deferred-object/">延迟对象</a></span>
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<span class="pull-right">英文文档：<a href="https://api.jquery123.com/deferred.fail/" target="_blank">deferred.fail()</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="deferred-fail1"><h2 class="section-title">
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<span class="name">deferred.fail( failCallbacks [, failCallbacks ] )</span><span class="returns">返回: <a href="/Types/#Deferred">Deferred</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> 当Deferred（延迟）对象拒绝时，调用添加的处理程序。 </p>
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<ul class="signatures"><li class="signature" id="deferred-fail-failCallbacks-failCallbacks">
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<h4 class="name">
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<span class="version-details">添加的版本: <a href="/category/version/1.5/">1.5</a></span>deferred.fail( failCallbacks [, failCallbacks ] )</h4>
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<ul>
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<li>
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<div><strong>failCallbacks</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，或者函数数组，当Deferred（延迟）对象拒绝时被调用。</div>
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</li>
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<li>
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<div><strong>failCallbacks</strong></div>
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<div>类型: <a href="/Types/#Function">Function</a>()</div>
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<div>
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可选的 一个函数，或者函数数组，当Deferred（延迟）对象拒绝时被调用。
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</div>
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</li>
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</ul>
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</li></ul>
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<div class="longdesc" id="entry-longdesc">
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<p><code>deferred.fail()</code>方法接受一个或多个参数，所有这些都参数可以是一个单一的函数或一个函数数组。当Deferred（延迟）拒绝时，failCallbacks被调用。回调是依照他们添加的顺序执行的。一旦<code>deferred.fail()</code>返回Deferred（延迟）对象，Deferred（延迟）可以链接其它的延迟对象，包括增加<code>deferred.fail()</code>方法。
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当Deferred（延迟）拒绝时，failCallbacks执行使用提供给<code><a href="/deferred.reject">deferred.resolve()</a></code>或<a href="/deferred.rejectWith"><code>deferred.rejectWith()</code></a>方法的参数，依照被添加的顺序调用。有关详细信息，请参阅文件<a href="/category/deferred-object/">Deferred（延迟）对象</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>
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<span class="desc">一旦<a href="/jQuery.get"><code>jQuery.get</code></a> 方法返回一个jqXHR对象，这是从一个Deferred（延迟）所得到的，可以附加的成功和失败回调使用<code>deferred.done()</code> and <code>deferred.fail()</code>方法。</span>
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</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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<div class="line n3">3</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>$.get(<span class="string">"test.php"</span>)</code></div></div><div class="container"><div class="line"><code> .done(<span class="keyword">function</span>(){ alert(<span class="string">"$.get succeeded"</span>); })</code></div></div><div class="container"><div class="line"><code> .fail(<span class="keyword">function</span>(){ alert(<span class="string">"$.get failed!"</span>); });</code></div></div></pre>
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</td>
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</div>
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</div></section>
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</div></article> </div>
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