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# Prototype observe () Method

This method registers an event handler on element and returns element.

## Syntax:

    element.observe(eventName, handler[, useCapture = false]);

## Return Value:

- An HTML element.

## Example:

    <html>
    <head>
    <title>Prototype examples</title>

    <script type="text/javascript"
       src="/javascript/prototype.js">
    </script>
    <script>

    function RegisterFunction()
    {

       $('test').observe('click', function(event){
          alert(Event.element(event).innerHTML);
       });

    }

    </script>
    </head>

    <body onload="RegisterFunction();">

      <p id="test">Click me to see the result.</p>

    </body>
    </html>

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

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