jQuery | off() Method
Last Updated :
27 Feb, 2019
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 >
$(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 >
$(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:
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