jQuery - attr( key, func ) Method


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Description:

The attr( key, func ) method sets a single property to a computed value, on all matched elements.

Syntax:

Here is the simple syntax to use this method:

selector.attr( key, func )

Parameters:

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

  • key: The name of the property to set.

  • func: A function returning the value to set. This function would have one argument which is index of current element.

Example:

Following example would create border for each table:

<html>
<head>
<title>The Selecter Example</title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js">
</script>
   
<script type="text/javascript" language="javascript">
   $(document).ready(function() {

     $("table").attr("border", function(index) {
         return "4px";
      })

   });
</script>
</head>
<body>

<table>
<tr><td>This is first table</td></tr>
</table>

<table>
<tr><td>This is second table</td></tr>
</table>

<table>
<tr><td>This is third table</td></tr>
</table>

</body>
</html>

This will produce following result:



jquery-attributes.htm