The off() Method in jQuery is used to remove event handlers attached with the on() method. The off() method brings a lot of consistency to the API and it replace unbind(), die() and undelegate() methods.
Syntax:
$(selector).off(event, selector, function(eventObj), map)
Parameter: This method accepts four parameters as mentioned above and described below:
- event: It is required parameter and used to specify one or more events or namespaces to remove from the selected elements. Multiple events are separated by space.
- selector: It is optional parameter and used to match with the one originally passed to the on() method when attaching event handlers
- function(eventObj): It is optional parameter and used to specify the function to run when the event occurs.
- map: This parameter is used to specify the event map ({event:function, event:function, …}) which contains one or more event attach to the elements, and functions to run when the events occur.
Example 1: This example removes the event handler.
<!DOCTYPE html> <html>
<head>
<title>
jQuery off() method
</title>
<script src=
</script>
<!-- Script to remove event handler -->
<script>
$(document).ready(function() {
$("h3").on("click", function() {
$(this).css("background-color", "green");
});
$("button").click(function() {
$("h3").off("click");
});
});
</script>
</head>
<body>
<h3>GeeksforGeeks</h3>
<button>
Click to remove event handler
</button>
</body>
</html>
|
Output:
Before Click on the element h3:
After Click on the element h3:
Example 2: This example use animate event to add animation effect one time and then remove the event handler.
<!DOCTYPE html> <html>
<head>
<title>
jQuery off() method
</title>
<script src=
</script>
<!-- Script to animate the event -->
<script>
$(document).ready(function() {
var x = 0;
$("h3").click(function(event) {
$("h3").animate({fontSize: "+=10px"
});
x++;
if (x >= 1) {
$(this).off(event);
}
});
});
</script>
</head>
<body style="text-align:center;">
<h1>Welcome to GeeksforGeeks!.</h1>
<div style="background-color:green;">
<h3>
Geeks for Geeks. Click to increase
the size (only one time)
</h3>
</div>
</body>
</html>
|
Output :
Before Click on the heading:
After Click on the heading: