jQuery 獲取對象根據(jù)屬性、內容匹配, 還有表單元素匹配

更新時間：2010年05月31日 14:27:31 作者：

jQuery 練習獲取對象(3) - 根據(jù)屬性、內容匹配, 還有表單元素匹配

指定元素中包含 id 屬性的, 如: $("span[id]")

 
<span id="span1" name="S1">AAA</span><br/> 
<span id="span2" name="S2">BBB</span><br/> 
<span name="Sx3">CCC</span><br/> 
<span name="Sx4">DDD</span><br/> 
<div id="div1" name="Dx1">EEE</div> 
<div name="D2">FFF</div> 

指定元素中不包含 id 屬性的, 如: $("span:not(span[id])") 或 $("span:not([id])")

復制代碼代碼如下:

 
<span id="span1" name="S1">AAA</span><br/> 
<span id="span2" name="S2">BBB</span><br/> 
<span name="Sx3">CCC</span><br/> 
<span name="Sx4">DDD</span><br/> 
<div id="div1" name="Dx1">EEE</div> 
<div name="D2">FFF</div> 

包含 id 屬性的, 如: $("body [id]")

復制代碼代碼如下:

 
<span id="span1" name="S1">AAA</span><br/> 
<span id="span2" name="S2">BBB</span><br/> 
<span name="Sx3">CCC</span><br/> 
<span name="Sx4">DDD</span><br/> 
<div id="div1" name="Dx1">EEE</div> 
<div name="D2">FFF</div> 

符合元素值的, 如: $("span[name='S2']")

復制代碼代碼如下:

 
<span id="span1" name="S1">AAA</span><br/> 
<span id="span2" name="S2">BBB</span><br/> 
<span name="Sx3">CCC</span><br/> 
<span name="Sx4">DDD</span><br/> 
<div id="div1" name="Dx1">EEE</div> 
<div name="D2">FFF</div> 

不符合元素值的, 如: $("span[name!='S2']")

復制代碼代碼如下:

 
<span id="span1" name="S1">AAA</span><br/> 
<span id="span2" name="S2">BBB</span><br/> 
<span name="Sx3">CCC</span><br/> 
<span name="Sx4">DDD</span><br/> 
<div id="div1" name="Dx1">EEE</div> 
<div name="D2">FFF</div> 

元素值開頭是?, 如: $("span[name^='S']")

復制代碼代碼如下:

 
<span id="span1" name="S1">AAA</span><br/> 
<span id="span2" name="S2">BBB</span><br/> 
<span name="Sx3">CCC</span><br/> 
<span name="Sx4">DDD</span><br/> 
<div id="div1" name="Dx1">EEE</div> 
<div name="D2">FFF</div> 

元素值結尾是?, 如: $("html [name$='1']")

復制代碼代碼如下:

 
<span id="span1" name="S1">AAA</span><br/> 
<span id="span2" name="S2">BBB</span><br/> 
<span name="Sx3">CCC</span><br/> 
<span name="Sx4">DDD</span><br/> 
<div id="div1" name="Dx1">EEE</div> 
<div name="D2">FFF</div> 

元素值包含?, 如: $("body [name*='x']")

復制代碼代碼如下:

 
<span id="span1" name="S1">AAA</span><br/> 
<span id="span2" name="S2">BBB</span><br/> 
<span name="Sx3">CCC</span><br/> 
<span name="Sx4">DDD</span><br/> 
<div id="div1" name="Dx1">EEE</div> 
<div name="D2">FFF</div> 

多個屬性條件, 如(有 id 且 name 開始是 "D"): $("body [id][name^='D']")

復制代碼代碼如下:

 
<span id="span1" name="S1">AAA</span><br/> 
<span id="span2" name="S2">BBB</span><br/> 
<span name="Sx3">CCC</span><br/> 
<span name="Sx4">DDD</span><br/> 
<div id="div1" name="Dx1">EEE</div> 
<div name="D2">FFF</div> 

查找包含 "AB" 的 span: $("span:contains('AB')")

復制代碼代碼如下:

 
<span>ABC</span><br/> 
<span><b>ABC</b></span><br/> 
<span></span> 
<div> 
<span>ABC</span><br/> 
<span><b>ABC</b></span><br/> 
<span></span> 
</div> 

從 div 中查找包含 "AB" 的 span: $("div span:contains('AB')")

復制代碼代碼如下:

 
<span>ABC</span><br/> 
<span><b>ABC</b></span><br/> 
<span></span> 
<div> 
<span>ABC</span><br/> 
<span><b>ABC</b></span><br/> 
<span></span> 
</div> 

查找包含的 span: $("span:has('b')")

復制代碼代碼如下:

 
<span>ABC</span><br/> 
<span><b>ABC</b></span><br/> 
<span></span> 
<div> 
<span>ABC</span><br/> 
<span><b>ABC</b></span><br/> 
<span></span> 
</div> 

查找空的 span: $("span:empty")

復制代碼代碼如下:

 
<span>ABC</span><br/> 
<span><b>ABC</b></span><br/> 
<span></span> 
<div> 
<span>ABC</span><br/> 
<span><b>ABC</b></span><br/> 
<span></span> 
</div> 

查找非空的(也就是作為父元素的) span: $("span:parent")

復制代碼代碼如下:

 
<span>ABC</span><br/> 
<span><b>ABC</b></span><br/> 
<span></span> 
<div> 
<span>ABC</span><br/> 
<span><b>ABC</b></span><br/> 
<span></span> 
</div> 

:hidden 與 :visible 分別對應隱藏與顯示的元素; 下例讓已顯示的變紅, 讓隱藏的顯示為灰色.

復制代碼代碼如下:

 
<!doctype html> 
<html> 
<head> 
<script src="http://code.jquery.com/jquery-1.4.2.min.js"></script> 
</head> 
<body> 
<div>111</div> 
<div>222</div> 
<div style="display:none">333</div> 
<div style="display:none">444</div> 
</body> 
</html> 
<script> 
$("div:visible").css("color", "red"); 
$("div:hidden").css("display", "").css("color", "silver"); 
</script> 

表單匹配:
:input 匹配:
<input ... />
<select></select>
<textarea></textarea>
<button></button>

:text 匹配 <input type="text" />
:password 匹配 <input type="password" />
:radio 匹配 <input type="radio" />
:checkbox 匹配 <input type="checkbox" />
:submit 匹配 <input type="submit" />
:reset 匹配 <input type="reset" />
:image 匹配 <input type="image" />
:file 匹配 <input type="" />
:button 匹配 <button></button>
:enabled 匹配所有可用的 input 元素
:disabled 匹配所有不可用的 input 元素
:checked 匹配所有選中的被選中復選框、單選框
:selected 匹配所有選中的 option 元素

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