uTools-Manuals/docs/jQuery/submit.html

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<h1 class="entry-title">.submit()</h1>
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						所属分类：<span class="category"><a href="/category/events/">事件</a> &gt; <a href="/category/events/form-events/">表单事件</a></span><span class="category-divider"> | </span><span class="category"><a href="/category/forms/">表单</a></span>
<span class="pull-right">英文文档：<a href="https://api.jquery123.com/submit/" target="_blank">.submit()</a></span>
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<span class="name">.submit( handler(eventObject) )</span><span class="returns">返回: <a href="/Types/#jQuery">jQuery</a></span>
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<p class="desc"><strong>描述: </strong>为 JavaScript 的 "submit" 事件绑定一个处理函数，或者触发元素上的该事件。</p>
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<span class="version-details">添加的版本: <a href="/category/version/1.0/">1.0</a></span>.submit( handler(eventObject) )</h4>
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<div><strong>handler(eventObject)</strong></div>
<div>类型: <a href="/Types/#Function">Function</a>()</div>
<div>每次事件触发时会执行的函数。</div>
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<span class="version-details">添加的版本: <a href="/category/version/1.4.3/">1.4.3</a></span>.submit(  [eventData ], handler(eventObject) )</h4>
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<div><strong>eventData</strong></div>
<div>类型: <a href="/Types/#PlainObject">PlainObject</a>
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<div>一个对象，它包含的数据键值对映射将被传递给事件处理程序。</div>
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<div><strong>handler(eventObject)</strong></div>
<div>类型: <a href="/Types/#Function">Function</a>()</div>
<div>每次事件触发时会执行的函数。</div>
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<span class="version-details">添加的版本: <a href="/category/version/1.0/">1.0</a></span>.submit()</h4>
<ul><li><div class="null-signature">这个方法不接受任何参数。</div></li></ul>
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<p>这个函数的前两个用法是 <code>.bind('submit', handler)</code> 的快捷方式，第3个不带参数的用法是 <code>.trigger('submit')</code> 的快捷方式。</p>
<p>当用户试图提交表单时，就会在这个表单元素上触发<code>submit</code>事件。它只能绑定在<code>&lt;form&gt;</code>元素上。以下几种情况会导致表单被提交：用户点击了<code>&lt;input type="submit"&gt;</code>, <code>&lt;input type="image"&gt;</code>, 或者 <code>&lt;button type="submit"&gt;</code>，或者当某些表单元素获取焦点时，敲击<kbd>Enter</kbd>（回车键），都可以提交。</p>
<blockquote><p>根据不同的浏览器，Enter 键可能会导致表单被提交，如果这个表单只有一个文本框或只有一个 submit 按钮的话。界面不应该依赖于这个键的特殊行为，除非已经使用了 keypress 事件来监听 Enter 键的按下。</p></blockquote>
<p>举例来说，请看下面的HTML：</p>
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<pre><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">form</span> <span class="attribute">id</span>=<span class="value">"target"</span> <span class="attribute">action</span>=<span class="value">"destination.html"</span>&gt;</span></code></div></div><div class="container"><div class="line"><code>  <span class="tag">&lt;<span class="title">input</span> <span class="attribute">type</span>=<span class="value">"text"</span> <span class="attribute">value</span>=<span class="value">"Hello there"</span> /&gt;</span></code></div></div><div class="container"><div class="line"><code>  <span class="tag">&lt;<span class="title">input</span> <span class="attribute">type</span>=<span class="value">"submit"</span> <span class="attribute">value</span>=<span class="value">"Go"</span> /&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;/<span class="title">form</span>&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">div</span> <span class="attribute">id</span>=<span class="value">"other"</span>&gt;</span></code></div></div><div class="container"><div class="line"><code>  Trigger the handler</code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;/<span class="title">div</span>&gt;</span></code></div></div></pre>
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<p>这个事件处理程序可以绑定到表单</p>
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<pre><div class="container"><div class="line"><code>$(<span class="string">'#target'</span>).submit(<span class="keyword">function</span>() {</code></div></div><div class="container"><div class="line"><code>  alert(<span class="string">'Handler for .submit() called.'</span>);</code></div></div><div class="container"><div class="line"><code>  <span class="keyword">return</span> <span class="literal">false</span>;</code></div></div><div class="container"><div class="line"><code>});</code></div></div></pre>
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<p>现在当表单提交时，警告将被显示。出现这种情况的实际提交之前，所以我们可以通过调用事件对象的<code>.preventDefault()</code>或在处理函数中返回 <code>false</code> 来取消提交：</p>
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<pre><div class="container"><div class="line"><code>$(<span class="string">'#other'</span>).click(<span class="keyword">function</span>() {</code></div></div><div class="container"><div class="line"><code>  $(<span class="string">'#target'</span>).submit();</code></div></div><div class="container"><div class="line"><code>});</code></div></div></pre>
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<p>这些代码执行后，点击<span class="output">Trigger the handler</span> 同样会警报显示。此外，默认的<code>submit</code>表单上的动作上会被触发，所以表格将被提交。</p>
<p>在Internet Explorer中，JavaScript的<code>submit</code>事件不会泡沫。但是，依赖 <code>submit</code> 事件代理的脚本，从 jQuery 1.4 开始，可以跨浏览器正常使用。</p>
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<h3>Additional Notes（其他注意事项）:</h3>
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<li>表单及他们的子元素不应该使元素名称或ID属性冲突，比如<code>submit</code>, <code>length</code>, 或 <code>method</code>。名称冲突可能会导致混乱的失败。对于一个完整的规则列表，并检查这些问题标记，看<a href="http://yura.thinkweb2.com/domlint/">DOMLint</a>。
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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">
<h4>Example: <span class="desc">如果你想根据一个标识来阻止表单被提交的话，可以像下面这样做：</span>
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<pre><div class="container"><div class="line"><code><span class="doctype">&lt;!DOCTYPE html&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">html</span>&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">head</span>&gt;</span></code></div></div><div class="container"><div class="line"><code>  <span class="tag">&lt;<span class="title">style</span>&gt;</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">0</span>;</span></span> <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="tag">div</span>,<span class="tag">p</span> <span class="rules">{ <span class="rule"><span class="attribute">margin-left</span>:<span class="value"><span class="number">10</span>px;</span></span> <span class="rule">}</span></span></code></div></div><div class="container"><div class="line"><code>  <span class="tag">span</span> <span class="rules">{ <span class="rule"><span class="attribute">color</span>:<span class="value">red;</span></span> <span class="rule">}</span></span></code></div></div><div class="container"><div class="line"><code>  <span class="tag">&lt;/<span class="title">style</span>&gt;</span></code></div></div><div class="container"><div class="line"><code>  <span class="tag">&lt;<span class="title">script</span> <span class="attribute">src</span>=<span class="value">"https://code.jquery.com/jquery-latest.js"</span>&gt;</span><span class="javascript"></span><span class="tag">&lt;/<span class="title">script</span>&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;/<span class="title">head</span>&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">body</span>&gt;</span></code></div></div><div class="container"><div class="line"><code>  <span class="tag">&lt;<span class="title">p</span>&gt;</span>Type 'correct' to validate.<span class="tag">&lt;/<span class="title">p</span>&gt;</span></code></div></div><div class="container"><div class="line"><code>  <span class="tag">&lt;<span class="title">form</span> <span class="attribute">action</span>=<span class="value">"javascript:alert('success!');"</span>&gt;</span></code></div></div><div class="container"><div class="line"><code>    <span class="tag">&lt;<span class="title">div</span>&gt;</span></code></div></div><div class="container"><div class="line"><code>      <span class="tag">&lt;<span class="title">input</span> <span class="attribute">type</span>=<span class="value">"text"</span> /&gt;</span></code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code>      <span class="tag">&lt;<span class="title">input</span> <span class="attribute">type</span>=<span class="value">"submit"</span> /&gt;</span></code></div></div><div class="container"><div class="line"><code>    <span class="tag">&lt;/<span class="title">div</span>&gt;</span></code></div></div><div class="container"><div class="line"><code>  <span class="tag">&lt;/<span class="title">form</span>&gt;</span></code></div></div><div class="container"><div class="line"><code>  <span class="tag">&lt;<span class="title">span</span>&gt;</span><span class="tag">&lt;/<span class="title">span</span>&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">script</span>&gt;</span><span class="javascript"></span></code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code>$(<span class="string">"form"</span>).submit(<span class="keyword">function</span>() {</code></div></div><div class="container"><div class="line"><code>  <span class="keyword">if</span> ($(<span class="string">"input:first"</span>).val() == <span class="string">"correct"</span>) {</code></div></div><div class="container"><div class="line"><code>    $(<span class="string">"span"</span>).text(<span class="string">"Validated..."</span>).show();</code></div></div><div class="container"><div class="line"><code>    <span class="keyword">return</span> <span class="literal">true</span>;</code></div></div><div class="container"><div class="line"><code>  }</code></div></div><div class="container"><div class="line"><code>  $(<span class="string">"span"</span>).text(<span class="string">"Not valid!"</span>).show().fadeOut(<span class="number">1000</span>);</code></div></div><div class="container"><div class="line"><code>  <span class="keyword">return</span> <span class="literal">false</span>;</code></div></div><div class="container"><div class="line"><code>});</code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;/<span class="title">script</span>&gt;</span></code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;/<span class="title">body</span>&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;/<span class="title">html</span>&gt;</span></code></div></div></pre>
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<h4>Demo:</h4>
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<h4>Example: <span class="desc">如果你想根据一个标识来阻止表单被提交的话，可以像下面这样做：</span>
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<pre><div class="container"><div class="line"><code>$(<span class="string">"form"</span>).submit( <span class="function"><span class="keyword">function</span> <span class="params">()</span> {</span></code></div></div><div class="container"><div class="line"><code>  <span class="keyword">return</span> <span class="keyword">this</span>.some_flag_variable;</code></div></div><div class="container"><div class="line"><code>} );</code></div></div></pre>
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<h4>Example: <span class="desc">触发页面上第一个表单的提交事件：</span>
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<pre><div class="container"><div class="line"><code>$(<span class="string">"form:first"</span>).submit();</code></div></div></pre>
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