EGeesh guptainwebdevjourney.hashnode.dev·Jan 23, 2022 · 2 min readEvolution 🌪 ES5 ⏳ES7CallBacks(ES5)? Callback refers to a function passed as an argument to another function. It helps in asynchronous programming. Let's understand it using a real-life example. Sample Code:- function display(sum) { document.getElementById("display-wind...01M