The filter( fn ) method filters all elements from the set of matched elements that do not match the specified function.
Here is the simple syntax to use this method:
selector.filter( selector )
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.
Following is an example showing a simple usage of this method:
<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 :
<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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