jQuery | off() Method
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:
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