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jQuery - one( type, [data], fn ) Method

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The one( type, [data], fn ) method binds a handler to one or more events to be executed once for each matched element. The handler is executed only once for each element. Otherwise, the same rules as described in bind() apply.

Possible event values: blur, focus, load, resize, scroll, unload, click etc.


Here is the simple syntax to use this method: type, [data], fn )


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


Following is a simple example a simple showing the usage of this method. Here it binds click event with each <div> element. Try to click any square two times, it won't react unlike bind() method:

<title>the title</title>
   <script type="text/javascript" 
   <script type="text/javascript" language="javascript">
   $(document).ready(function() {

     $('div').one('click', function( event ){
         alert('Hi there!');


      .div{ margin:10px;padding:12px;
             border:2px solid #666;
   <p>Click on any square below to see the result:</p>
   <div class="div" style="background-color:blue;"></div>
   <div class="div" style="background-color:green;"></div>
   <div class="div" style="background-color:red;"></div>

To understand it in better way you can Try it yourself.

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