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    How to override JavaScript/jQuery functions and events?

    Updated 16 July 2021

    Today with the help of this article I am going to explain you to override predefined functions and predefined events on a selector without changing in the core file.

    Override Event

    Below code snippet show that with the help of .off() function we can override events in jquery

    $(document).off('event', 'selector').on('event', 'selector', function() {
    	// Your code

    override function

    Suppose you have a predefined js function helloWorld

    function helloWorld (argument) {

    Now, if you want to override this function then

    var origHelloWorld = window.helloWorld;
    window.helloWorld = function(argument) {
        	//your code
        	origHelloWorld(argument); 	// after your code if you want to call original function 

    That’s all in this article, hope it will help you to override functions and events in js. Try this and if you have any query then just comment below. 🙂

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