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jQuery Basic Filter Selector Instance Code

  • 2021-07-16 01:45:01
  • OfStack

In this paper, we share the specific code of jQuery basic filter selector for your reference. The specific contents are as follows 


<!DOCTYPE html>
<html>

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

<body>
  <h2> Basic filter </h2>
  <h3>:first/:last/:even/:odd</h3>
  <div class="left">
    <div class="div">
      <p>div:first</p>
      <p>:even</p>
    </div>
    <div class="div">
      <p>:odd</p>
    </div>
    <div class="div">
      <p>:even</p>
    </div>
    <div class="div">
      <p>:odd</p>
    </div>
    <div class="div">
      <p>:even</p>
    </div>
    <div class="div">
      <p>div:last</p>
      <p>:odd</p>
    </div>
  </div>
  <script type="text/javascript">
  // Find the first 1 A div
  $(".div:first").css("color", "#CD00CD");
  </script>

  <script type="text/javascript">
  // Find the last 1 A div
  $(".div:last").css("color", "#CD00CD");
  </script>

  <script type="text/javascript">
  //:even  Select an element whose cited value is even, from the  0  Start counting 
  $(".div:even").css("border", "3px groove red");
  </script>

  <script type="text/javascript">
  //:odd  Select an element whose cited value is odd, from the  0  Start counting 
  $(".div:odd").css("border", "3px groove blue");
  </script>


  <h3>:eq/:gt/:lt</h3>
  <div class="left">
    <div class="aaron">
      <p>:lt(3)</p>
    </div>
    <div class="aaron">
      <p>:lt(3)</p>
    </div>
    <div class="aaron">
      <p>:eq(2)</p>
    </div>
    <div class="aaron">
    </div>
    <div class="aaron">
      <p>:gt(3)</p>
    </div>
    <div class="aaron">
      <p>:gt(3)</p>
    </div>
  </div>
  <script type="text/javascript">
  //:eq
  // Select a single 
  $(".aaron:eq(2)").css("border", "3px groove blue");
  </script>

  <script type="text/javascript">
  //:gt  Select all index values in the matching collection greater than the given index Elements of parameters 
  $(".aaron:gt(3)").css("border", "3px groove blue");
  </script>

   <script type="text/javascript">
  //:lt  Select that all index values in the matching collection are less than the given index Elements of parameters 
  // And :gt On the contrary 
  $(".aaron:lt(2)").css("color", "#CD00CD");
  </script>

  <h3>:not</h3>
  <div class="left">
    <div>
      <input type="checkbox" name="a" />
      <p>Aaron</p>
    </div>
    <div>
      <input type="checkbox" name="b" />
      <p> Massive open online course </p>
    </div>
    <div>
      <input type="checkbox" name="c" checked="checked" />
      <p> Others </p>
    </div>
  </div>
  <script type="text/javascript">
    //:not  Select All Elements to remove elements that do not match the given selector 
    // Select all followed by none checked Property of input Element after the p Element, give color 
    $("input:not(:checked) + p").css("background-color", "#CD00CD");
  </script>
</body>

</html>
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