.undelegate()


.undelegate()Returns: jQuery

Description: Remove a handler from the event for all elements which match the current selector, based upon a specific set of root elements.

The .undelegate() method is a way of removing event handlers that have been bound using .delegate(). As of jQuery 1.7, the .on() and .off() methods are preferred for attaching and removing event handlers.

Examples:

Example: Can bind and unbind events to the colored button.

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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>undelegate demo</title>
<style>
button {
margin: 5px;
}
button#theone {
color: red;
background: yellow;
}
</style>
<script src="//code.jquery.com/jquery-1.10.2.js"></script>
</head>
<body>
<button id="theone">Does nothing...</button>
<button id="bind">Bind Click</button>
<button id="unbind">Unbind Click</button>
<div style="display:none;">Click!</div>
<script>
function aClick() {
$( "div" ).show().fadeOut( "slow" );
}
$( "#bind" ).click(function() {
$( "body" )
.delegate( "#theone", "click", aClick )
.find( "#theone" ).text( "Can Click!" );
});
$( "#unbind" ).click(function() {
$( "body" )
.undelegate( "#theone", "click", aClick )
.find( "#theone" ).text( "Does nothing..." );
});
</script>
</body>
</html>

Demo:

Example: To unbind all delegated events from all paragraphs, write:

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$( "p" ).undelegate();

Example: To unbind all delegated click events from all paragraphs, write:

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$( "p" ).undelegate( "click" );

Example: To undelegate just one previously bound handler, pass the function in as the third argument:

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var foo = function () {
// Code to handle some kind of event
};
// ... Now foo will be called when paragraphs are clicked ...
$( "body" ).delegate( "p", "click", foo );
// ... foo will no longer be called.
$( "body" ).undelegate( "p", "click", foo );

Example: To unbind all delegated events by their namespace:

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var foo = function() {
// Code to handle some kind of event
};
// Delegate events under the ".whatever" namespace
$( "form" ).delegate( ":button", "click.whatever", foo );
$( "form" ).delegate( "input[type='text'] ", "keypress.whatever", foo );
// Unbind all events delegated under the ".whatever" namespace
$( "form" ).undelegate( ".whatever" );