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Detailed explanation of jQuery attribute filter selector usage examples

小云云Original: 2017-12-27 16:46:211668browse

This article mainly brings you a detailed explanation of the usage of the attribute filter selector of jQuery selector. The editor thinks it’s pretty good, so I’ll share it with you now and give it as a reference. Let’s follow the editor to take a look, I hope it can help everyone.

Among so many attribute selectors, [attr="value"] and [attr*="value"] are the most practical

[attr="value"] can help us locate different types of elements, especially the operation of form elements, such as input[type="text"], input[type=" checkbox"] etc.

[attr*="value"] can help us match different types of files on the website

<!DOCTYPE html>
<html>

<head>
  <meta http-equiv="Content-type" content="text/html; charset=utf-8" />
  <title></title>
  <link rel="stylesheet" href="imooc.css" rel="external nofollow" type="text/css">
  <script src="http://libs.baidu.com/jquery/1.9.1/jquery.js"></script>
</head>

<body>
  <h2>属性筛选选择器</h2>
  <h3>[att=val]、[att]、[att|=val]、[att~=val]</h3>
  <p class="left" testattr="true" >
    <p class="p" testattr="true" name=&#39;p1&#39;>
      <a>[att=val]</a>
    </p>
    <p class="p" testattr="true" p2>
      <a>[att]</a>
    </p>
    <p class="p" testattr="true" name="-">
      <a>[att|=val]</a>
    </p>
    <p class="p" testattr="true" name="a b">
      <a>[att~=val]</a>
    </p>
  </p>

  <script type="text/javascript">
     //查找所有p中，属性name=p1的p元素
     $("p[name = p1]").css("border", "3px groove red"); 
  </script>

  <script type="text/javascript">
    //查找所有p中，有属性p2的p元素
    $("p[p2]").css("border", "3px groove blue"); 
  </script>

  <script type="text/javascript">
    //查找所有p中，有属性name中的值只包含一个连字符“-”的p元素
    $("p[name|=&#39;-&#39;]").css("border", "3px groove #00FF00"); 
  </script>

  <script type="text/javascript">
    //查找所有p中，有属性name中的值包含一个连字符“空”和“a”的p元素
    $("p[name~=&#39;a&#39;]").css("border", "3px groove #668B8B"); 
  </script>


  <h3>[att^=val]、[att*=val]、[att$=val]、[att!=val]</h3>
  <p class="left" testattr="true" >
    <p class="p" testattr="true" name=&#39;imooc-aaorn&#39;>
      <a>[att^=val]</a>
    </p>
    <p class="p" testattr="true" name=&#39;aaorn-imooc&#39;>
      <a>[att$=val]</a>
    </p>
    <p class="p" testattr="true" name="attr-test-selector">
      <a>[att*=val]</a>
    </p>
    <p class="p" name="a b">
      <a>[att!=val]</a>
    </p>
  </p>


  <script type="text/javascript">
     //查找所有p中，属性name的值是用imooc开头的
     $("p[name ^= imooc]").css("border", "3px groove red"); 
  </script>

  <script type="text/javascript">
     //查找所有p中，属性name的值是用imooc结尾的
     $("p[name $= imooc]").css("border", "3px groove blue"); 
  </script>

  <script type="text/javascript">
    //查找所有p中，有属性name中的值包含一个test字符串的p元素
    $("p[name*=&#39;test&#39;]").css("border", "3px groove #00FF00"); 
  </script>

  <script type="text/javascript">
    //查找所有p中，有属性testattr中的值没有包含"true"的p
    $("p[testattr != &#39;true&#39;]").css("border", "3px groove #668B8B"); 
  </script>


</body>

</html>

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