What are Debounce and throttle ? They are techniques for optimizing browser performance in JS. Why we use them ? These are for limiting the rate of function execution/API request Where can we use them ? Input/button/window events, Searching/ Typeahea...
8. Map() Function: map(callback, thisArg) Usage: arr/obj.map(function(element, index, array) { /* … */ }, thisArg) Description: creates a new array populated with the results of callback function on every element in the calling array. Polyfill & ...
4. forEach() Function: forEach(callback, thisArg) Usage: arr.forEach((ele, index, arr)=>{...}, this) Description: callback function will execute on every element. But not for uninitialized elements for sparse arrays. Polyfill: forEach //functio...
Any code we write, we always want it to be best and want it to work on every browser. But sometimes, our code might not work on older engines as they do on modern browsers. That's because the older engines don't understand latest features. So there's...
