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161 lines
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HTML
161 lines
23 KiB
HTML
<article class="" id="post-">
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<header class="entry-header">
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<h1 class="entry-title">:submit Selector</h1>
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<div class="entry-meta">
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所属分类：<span class="category"><a href="/category/selectors/">选择器</a> > <a href="/category/selectors/form-selectors/">表单</a></span><span class="category-divider"> | </span><span class="category"><a href="/category/selectors/">选择器</a> > <a href="/category/selectors/jquery-selector-extensions/">jQuery 扩展</a></span>
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<span class="pull-right">英文文档：<a href="https://api.jquery123.com/submit-selector/" target="_blank">:submit Selector</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 selector" id="submit1"><h2 class="section-title"><span>submit selector</span></h2>
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<div class="entry-wrapper">
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<p class="desc"><strong>描述: </strong>选择所有类型为提交的元素。</p>
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<ul class="signatures"><li class="signature"><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>jQuery( ":submit" )</h4></li></ul>
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<div class="longdesc" id="entry-longdesc">
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<p><code>:submit</code>选择通常适用于按钮或input元素。请注意，一些浏览器将<code><button></code>元素作为<code>type="default"</code>默认处理，而其他浏览器（如Internet Explorer）并非如此。 为了确保标签能在所有浏览器下正常工作，并保证一致，它始终选择能提交表单的按钮，总是指定一个<code>type</code>属性。</p>
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</div>
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<h3>Additional Notes（其他注意事项）:</h3>
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<div class="longdesc"><ul>
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<li>
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因为<code>:submit</code> 是一个 jQuery 延伸出来的选择器，并不是的CSS规范的一部分，使用<code>:submit</code> 查询不能充分利用原生DOM提供的<code>querySelectorAll()</code> 方法来提高性能。为了当使用<code>:submit</code> 的时候在现代浏览器上获得更佳的性能，首先使用纯CSS选择器选择元素，然后使用<code>[type="submit"]</code>代替.
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</li>
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</ul></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">查找所有作为 td 元素后代的提交按钮。</span></h4>
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<div class="syntaxhighlighter xml ">
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<table>
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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">textarea</span> <span class="rules">{ <span class="rule"><span class="attribute">height</span>:<span class="value"><span class="number">45</span>px;</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> </code></div></div><div class="container"><div class="line"><code><span class="tag"><<span class="title">form</span>></span></code></div></div><div class="container"><div class="line"><code><span class="tag"><<span class="title">table</span> <span class="attribute">id</span>=<span class="value">"exampleTable"</span> <span class="attribute">border</span>=<span class="value">"1"</span> <span class="attribute">cellpadding</span>=<span class="value">"10"</span> <span class="attribute">align</span>=<span class="value">"center"</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">tr</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">th</span>></span></code></div></div><div class="container"><div class="line"><code> Element Type</code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">th</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">th</span>></span></code></div></div><div class="container"><div class="line"><code> Element</code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">th</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">tr</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">tr</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">td</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">input</span> <span class="attribute">type</span>=<span class="value">"button"</span> <span class="attribute">value</span>=<span class="value">"Input Button"</span>/></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">td</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">tr</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">tr</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">td</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">input</span> <span class="attribute">type</span>=<span class="value">"checkbox"</span> /></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">td</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">tr</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">tr</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">td</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">input</span> <span class="attribute">type</span>=<span class="value">"file"</span> /></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">td</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">tr</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">tr</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">td</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">input</span> <span class="attribute">type</span>=<span class="value">"hidden"</span> /></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">td</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">tr</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">tr</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">td</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">input</span> <span class="attribute">type</span>=<span class="value">"image"</span> /></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">td</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">tr</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">tr</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">td</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">input</span> <span class="attribute">type</span>=<span class="value">"password"</span> /></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">td</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">tr</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">tr</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">td</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">input</span> <span class="attribute">type</span>=<span class="value">"radio"</span> /></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">td</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">tr</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">tr</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">td</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">input</span> <span class="attribute">type</span>=<span class="value">"reset"</span> /></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">td</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">tr</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">tr</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">td</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">input</span> <span class="attribute">type</span>=<span class="value">"submit"</span> /></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">td</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">tr</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">tr</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">td</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">input</span> <span class="attribute">type</span>=<span class="value">"text"</span> /></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">td</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">tr</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">tr</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">td</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">select</span>></span><span class="tag"><<span class="title">option</span>></span>Option<span class="tag"></<span class="title">option</span>></span><span class="tag"></<span class="title">select</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">td</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">tr</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">tr</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">td</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">textarea</span>></span><span class="tag"></<span class="title">textarea</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">td</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">tr</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">tr</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">td</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">button</span>></span>Button<span class="tag"></<span class="title">button</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">td</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">tr</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">tr</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">td</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">button</span> <span class="attribute">type</span>=<span class="value">"submit"</span>></span>Button type="submit"<span class="tag"></<span class="title">button</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">td</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">tr</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">table</span>></span></code></div></div><div class="container"><div class="line"><code><span class="tag"></<span class="title">form</span>></span></code></div></div><div class="container"><div class="line"><code><span class="tag"><<span class="title">div</span> <span class="attribute">id</span>=<span class="value">"result"</span>></span><span class="tag"></<span class="title">div</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">script</span>></span><span class="javascript"></span></code></div></div><div class="container"><div class="line"><code><span class="keyword">var</span> submitEl = $(<span class="string">"td :submit"</span>)</code></div></div><div class="container"><div class="line"><code> .parent(<span class="string">'td'</span>)</code></div></div><div class="container"><div class="line"><code> .css({background:<span class="string">"yellow"</span>, border:<span class="string">"3px red solid"</span>})</code></div></div><div class="container"><div class="line"><code>.end();</code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code>$(<span class="string">'#result'</span>).text(<span class="string">'jQuery matched '</span> + submitEl.length + <span class="string">' elements.'</span>);</code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="comment">// so it won't submit</span></code></div></div><div class="container"><div class="line"><code>$(<span class="string">"form"</span>).submit(<span class="function"><span class="keyword">function</span> <span class="params">()</span> {</span> <span class="keyword">return</span> <span class="literal">false</span>; });</code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="comment">// Extra JS to make the HTML easier to edit (None of this is relevant to the ':submit' selector</span></code></div></div><div class="container"><div class="line"><code>$(<span class="string">'#exampleTable'</span>).find(<span class="string">'td'</span>).each(<span class="keyword">function</span>(i, el) {</code></div></div><div class="container"><div class="line"><code> <span class="keyword">var</span> inputEl = $(el).children(),</code></div></div><div class="container"><div class="line"><code> inputType = inputEl.attr(<span class="string">'type'</span>) ? <span class="string">' type="'</span> + inputEl.attr(<span class="string">'type'</span>) + <span class="string">'"'</span> : <span class="string">''</span>;</code></div></div><div class="container"><div class="line"><code> $(el).before(<span class="string">'<td>'</span> + inputEl[<span class="number">0</span>].nodeName + inputType + <span class="string">'</td>'</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">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>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
</div>
|
||
<h4>Demo:</h4>
|
||
<div class="demo code-demo"></div>
|
||
</div></section>
|
||
</div></article> </div>
|
||
</article> |