jquery选择器 直观实验
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<p style="margin:0;"><small>Original lab by <a href="http://www.learningjquery.com/" target="_blank" >Karl Swedberg</a> Enhanced by <a href="http://www.codylindley.com">Cody Lindley</a>. FYI (ie6 != supported)</small></p>
<div class="section">
<h1>jQuery Selectors</h1>
<div class="domtree">
<h3>Toggle Button = <code>$('selector').addClass('highlight').animate({ marginLeft: 10}, 'fast');</code></h3>
<p><a href="http://www.codylindley.com/jqueryselectors/jqueryselectors.zip" title="Download This Lab" rel="">Download This Lab</a></p>
<div id="myid">This sentence is in <code><div id="myid"></code>. It is followed by a horizontal rule.</div>
<hr />
<p>This is a paragraph, which means it is wrapped in <code><p></code> <span>and</span> <code></p></code>. Those "p" tags in the previous sentence are formatted as <code><code></code>.</p>
<ul>
<li>This is the first list item (<code><li></code>) in an unordered list (<code><ul></code>). </li>
<li>This is the second list item. It has a <a rel="self" title="Learning jQuery blog" href="/archives/jquery-links.htm">link</a> in it.</li>
<li class="myclass otherclass">This is the third list item. It has a <code>class</code> of "myclass otherclass"</li>
<li>This is the fourth list item. It has <strong>strong</strong> text and <em>em</em>phasized <em>text</em>.
<ul>
<li>second-level list item 1</li>
<li>second-level list item 2</li>
</ul>
</li>
</ul>
<p class="myclass"><code><p class="myclass"></code>This is another paragraph. It has class="myclass" Otherwise, nothing <strong>special</strong> about it at all.</p>
<p>This is a paragraph, which means it is wrapped in <code><p></code> and <code></p></code>. Those "p" tags in the previous sentence are formatted as <code>.</p>
<form action="examples_submit" method="get" accept-charset="utf-8">
<div class="left">
<div><input type="text" value="text input" /></div>
<div><input type="text" value="disabled text input" disabled="disabled" /></div>
<div><input type="password" name="password" value="password" /></div>
<div><select>
<option>select list w/ options</option>
<option>another option</option>
<option>a third option</option>
</select>
</div>
</div>
<textarea class="left" rows="5" cols="20">This is a textarea</textarea>
<div><select size="5" style="margin-left:10px">
<option>select list w/ options</option>
<option selected="selected">another option</option>
<option>a third option</option>
</select></div>
<div class="clear-left"><label for="radio1">
<input class="left" name="radiobtn" type="radio" id="radio1" value="checkedradio" checked="checked" />
Radio Checked
</label>
<label class="left clear-left" for="radio2">
<input class="left" id="radio2" name="radiobtn" type="radio" value="not" />
Radio Not Checked
</label>
<label class="left clear-left" for="check1">
<input class="left" id="check1" name="checkbx" type="checkbox" value="checked" checked="checked" />
Checkbox Checked
</label>
<label class="left clear-left" for="check2">
<input class="left" id="check2" name="checkbx" type="checkbox" value="not" />
Checkbox Not Checked
</label>
<label class="left clear-left" for="check3">
<input class="left" id="check3" name="checkbx" type="checkbox" value="not" />
Another checkbox Not Checked
</label>
</div>
<div class="left clear-left"><input type="submit" value="Submit input" /></div>
<div class="left"><input type="button" value="Button input" /></div>
<div class="left"><input type="reset" value="Reset input" /></div>
<div class="left"><input type="image" src="select-form_files/image.gif" value="Image input" /></div>
<div class="left"><button>Button button</button></div>
<div class="left clear-left"><input type="file" name="fileinput" value="file input" id="fileinput" /></div>
</form>
</div>
<div class="example">
<h3>Enter Your Own Selectors ( example: li:nth-child(2) )</h3>
<textarea rows="3" id="customInput" style="width:250px;">li:nth-child(2)</textarea>
<input type="submit" value="toggle" id="toggleCustom" />
</div>
<div class="example">
<h3>Basics</h3>
<div class="content">
<div class="sample-code">$('<span class="querystring">code</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/element#element" />
<div class="sample-code">$('<span class="querystring">#myid</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/id#id" />
<div class="sample-code">$('<span class="querystring">.myclass</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/class#class" />
<div class="sample-code">$('<span class="querystring">*</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/all" />
<div class="sample-code">$('<span class="querystring">code, #myid, .myclass</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/multiple#selector1selector2selectorN" />
</div>
</div>
<div class="example">
<h3>Hierarchy</h3>
<div class="content">
<div class="sample-code">$('<span class="querystring">div code</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/descendant#ancestordescendant" />
<div class="sample-code">$('<span class="querystring">li > ul</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/child#parentchild" />
<div class="sample-code">$('<span class="querystring">strong + em</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/next#prevnext" />
<div class="sample-code">$('<span class="querystring">strong ~ em</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/siblings#prevsiblings" />
</div>
</div>
<div class="example">
<h3>Basic Filters</h3>
<div class="content">
<div class="sample-code">$('<span class="querystring">li:first</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/first" />
<div class="sample-code">$('<span class="querystring">li:last</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/last" />
<div class="sample-code">$('<span class="querystring">li:not(li:first)</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/not#selector" />
<div class="sample-code">$('<span class="querystring">li:even</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/even" />
<div class="sample-code">$('<span class="querystring">li:odd</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/odd" />
<div class="sample-code">$('<span class="querystring">li:eq(1)</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/eq#index" />
<div class="sample-code">$('<span class="querystring">li:gt(2)</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/gt#index" />
<div class="sample-code">$('<span class="querystring">li:lt(2)</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/lt#index" />
<div class="sample-code">$('<span class="querystring">:header</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/header" />
<div class="sample-code">$('<span class="querystring">:animated</span>')</div>
<input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/animated" />
</div>
</div>
<div class="example">
<h3>Content Filters</h3>
<div class="content">
<div class="sample-code">$('<span class="querystring">li:contains(second-level)</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/contains#text" />
<div class="sample-code">$('<span class="querystring">:empty</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/empty" />
<div class="sample-code">$('<span class="querystring">li:has(a)</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/has#selector" />
<div class="sample-code">$('<span class="querystring">p:parent</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/parent" />
</div>
</div>
<div class="example">
<h3>Visibility Filters</h3>
<div class="content">
<div class="sample-code">$('<span class="querystring">:hidden</span>')</div>
<input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/hidden" />
<div class="sample-code">$('<span class="querystring">:visible</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/visible" />
</div>
</div>
<div class="example">
<h3>Attribute Filters</h3>
<div class="content">
<div class="sample-code">$('<span class="querystring">li[class]</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/attributeHas#attribute" />
<div class="sample-code">$('<span class="querystring">a[rel="self"]</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/attributeEquals#attributevalue" />
<div class="sample-code">$('<span class="querystring">a[rel!="nofollow"]</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/attributeNotEqual#attributevalue" />
<div class="sample-code">$('<span class="querystring">[class^="my"]</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/attributeStartsWith#attributevalue" />
<div class="sample-code">$('<span class="querystring">a[title$="blog"]</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/attributeEndsWith#attributevalue" />
<div class="sample-code">$('<span class="querystring">a[href*="zip"]</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/attributeContains#attributevalue" />
<div class="sample-code">$('<span class="querystring">a[rel][href][title$="blog"]</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/attributeMultiple#attributeFilter1attributeFilter2attributeFilterN" />
</div>
</div>
<div class="example">
<h3>Child Filters</h3>
<div class="content">
<div class="sample-code">$('<span class="querystring">li:nth-child(even)</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/nthChild#index" />
<div class="sample-code">$('<span class="querystring">li:nth-child(odd)</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/nthChild#index" />
<div class="sample-code">$('<span class="querystring">li:nth-child(2)</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/nthChild#index" />
<div class="sample-code">$('<span class="querystring">li:nth-child(2n)</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/nthChild#index" />
<div class="sample-code">$('<span class="querystring">li:first-child</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/firstChild" />
<div class="sample-code">$('<span class="querystring">li:last-child</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/lastChild" />
<div class="sample-code">$('<span class="querystring">code:only-child</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/onlyChild" />
</div>
</div>
<div class="example">
<h3>Forms</h3>
<div class="content">
<div class="sample-code">$('<span class="querystring">:input</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/input" />
<div class="sample-code">$('<span class="querystring">:text</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/text" />
<div class="sample-code">$('<span class="querystring">:password</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/password" />
<div class="sample-code">$('<span class="querystring">:radio</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/radio" />
<div class="sample-code">$('<span class="querystring">:checkbox</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/checkbox" />
<div class="sample-code">$('<span class="querystring">:submit</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/submit" />
<div class="sample-code">$('<span class="querystring">:image</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/image" />
<div class="sample-code">$('<span class="querystring">:reset</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/reset" />
<div class="sample-code">$('<span class="querystring">:button</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/button" />
<div class="sample-code">$('<span class="querystring">:file</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/file" />
<div class="sample-code">$('<span class="querystring">:hidden</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/hidden" />
</div>
</div>
<div class="example">
<h3>Form Filters</h3>
<div class="content">
<div class="sample-code">$('<span class="querystring">input:enabled</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/enabled" />
<div class="sample-code">$('<span class="querystring">:disabled</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/disabled" />
<div class="sample-code">$('<span class="querystring">:checked</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/checked" />
<div class="sample-code">$('<span class="querystring">:selected</span>')</div>
<input type="submit" value="toggle" /><input type="submit" value="documentation" title="http://docs.jquery.com/Selectors/selected" />
</div>
</div>
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