jQuery filter( fn ) Method

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Description:

The filter( fn ) method filters all elements from the set of matched elements that do not match the specified function.

Syntax:

Here is the simple syntax to use this method:

Example

selector.filter( selector )

Parameters:

Here is the description of all the parameters used by this method:

  • fn: The function is called with a context equal to the current element just like $.each. If the function returns false, then the element is removed otherwise the element is kept.

Example:

Following is an example showing a simple usage of this method:

Example

<html>
<head>
   <script type="text/javascript"  src="../../js/jquery-2.2.0.js"></script>
   <script type="text/javascript" language="javascript">
   
   $(document).ready(function() {
      $("li").filter(function (index) {
        return index == 1 || $(this).attr("class") == "middle";
      }).addClass("selected");
   });
   </script>
   <style>
      .selected { color:red; }
  </style>
</head>
<body>
   <div>
   <ul>
     <li class="top">list item 1</li>
     <li class="top">list item 2</li>
     <li class="middle">list item 3</li>
     <li class="middle">list item 4</li>
     <li class="bottom">list item 5</li>
     <li class="bottom">list item 6</li>
   </ul>
   </div>
</body>
</html>

This would generate following Output Will Be :

Example

<html>
<head>
   <script type="text/javascript"  src="../../js/jquery-2.2.0.js"></script>
   <script type="text/javascript" language="javascript">
   
   $(document).ready(function() {
      $("li").filter(function (index) {
        return index == 1 || $(this).attr("class") == "middle";
      }).addClass("selected");
   });
   </script>
   <style>
      .selected { color:red; }
  </style>
</head>
<body>
   <div>
   <ul>
     <li class="top">list item 1</li>
     <li class="selected">list item 2</li>
     <li class="selected">list item 3</li>
     <li class="selected">list item 4</li>
     <li class="bottom">list item 5</li>
     <li class="bottom">list item 6</li>
   </ul>
   </div>
</body>
</html>
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