This method unregisters handler and returns element.
Syntax:
element.stopObserving(eventName, handler);
Return Value:
Returns an HTML element.
Example:
<html>
<head>
<title>Prototype examples</title>
<script type="text/javascript"
src="/javascript/prototype.js">
</script>
<script>
function handler(event){
alert(Event.element(event).innerHTML);
}
function RegisterFunction()
{
$('test').observe('click', handler );
alert("Registering the handler");
}
function UnRegister()
{
$('test').stopObserving('click', handler);
alert("Now unregistering the handler");
}
</script>
</head>
<body onload="RegisterFunction();">
<p id="test">Click me to see the result.</p>
<br />
<p>Click the button to unregister the handler.</p>
<input type="button" value="UnReg" onclick="UnRegister();"/>
</body>
</html>