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= 
"https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"> 
    </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= 
"https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"> 
    </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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