jQuery - attr( key, func ) Method

Quiz

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 = "https://www.tutorialspoint.com/jquery/jquery-3.6.0.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

Print Page