jQuery callbacks.remove() Method

Last Updated : 24 Jul, 2024

The jQuery callbacks.remove() method is used to remove a single callback or a collection of callbacks from a callback list.

Syntax:

callbacks.remove( callbacks )

Parameters:

callbacks: This parameter specifies a function, or an array of functions, which are to be removed from the callback list.

Return Value: This method returns the Callbacks object onto which it is attached.

Example 1: In this example, there is a remove method used to remove the function ‘func’ from the list.

html

<!DOCTYPE HTML>
<html>

<head>
    <script src=
"https://code.jquery.com/jquery-3.5.0.js">
    </script>
</head>

<body style="text-align:center;">
    <h1 style="color:green;">
        GeeksForGeeks
    </h1>

    <p>
        jQuery | callbacks.remove() method
    </p>

    <button onclick="Geeks();">
        click here
    </button>

    <p id="GFG"></p>

    <script>
        var el_down = document.getElementById("GFG");
        var res = "";
        var callbacks = jQuery.Callbacks();

        function Geeks() {
            var func = function (val) {
                res = res + "value passed is - " + val;
            };

            // Function added to list
            callbacks.add(func);
            callbacks.fire("gfg_1");

            // Removing the func from list
            callbacks.remove(func);
            
            // Now This will not work
            callbacks.fire("gfg_2");
            el_down.innerHTML = res;
        } 
    </script>
</body>

</html>

Output:

Example 2: This example provides a button to remove the function ‘fun’ from the Callbacks list.

html

<!DOCTYPE HTML>
<html>

<head>
    <script src=
"https://code.jquery.com/jquery-3.5.0.js">
    </script>
</head>

<body style="text-align:center;">

    <h1 style="color:green;">
        GeeksForGeeks
    </h1>

    <p>
        JQuery | callbacks.remove() method
    </p>

    <button onclick="Geeks();">
        click here
    </button>
    
    <button onclick="remove();">
        remove
    </button>
    
    <p id="GFG"></p>

    <script>
        var el_down = document.getElementById("GFG");
        var res = "";
        var callbacks = jQuery.Callbacks();

        var fun = function (val) {
            res = res + "This is function and "
                + "value passed is " + val + "<br>";
        };

        // Adding function to Callback list
        callbacks.add(fun);
        
        // Defining function to remove
        function remove() {
            callbacks.remove(fun);
        }
        
        function Geeks() {
            callbacks.fire("GFG_1");
            el_down.innerHTML = res;
        } 
    </script>
</body>

</html>

Output: Function is removed from callbacks list.

jQuery callbacks.add() Method

PranchalKatiyar

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jQuery callbacks.remove() Method

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