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Github Code: JS Polyfills 16. Curry Currying: Transformation of function with multiple parameters to a sequence of single parameters is Currying. Currying just transforms the function, it will not call the function. Partial functions can be easily ge...
Github Code: JS Polyfills What are Promises? Promise is an object that represents the eventual completion or failure of an asynchronous operation. Why do we use them? To avoid callback hell Where can we use them? We can use promises in different asyn...
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...
