Many times we need to do Deep copying objects in JavaScript. Since shallow copy may cause many issues as it may affect original object. Here are few ways to achieve…
We can remove element from array with different ways. But if we want to remove specific element from array then we have to think different approach. 1. Using indexOf and…
These are few Javascript Ouput based interview question, which I faced during my interview process. Question 1. console.log('val1--val:',val1); val1 = 10; test(); var val2 = 20; const test = ()…
These are few coding interview question which I faced during my interview journey with different companies. I hope you will find helpful it. 1. Write a program for anagram. An…
There are various way to reverse the string in javascript. Let try few ways to achieve same. 1. Using inbuilt methods let str = 'singhak'; let strArray = str.split(''); let…
We need to perform some operation on array elements within async and await function. But using forEach loop is a bad choice. We achieve same with the following approach. 1.…
The == operator will compare for equality after doing any necessary type conversions. The === operator will not do the conversion, so if two values are not the same type === will simply return false. Both are equally quick. For…
This means that a promise you called rejected, but there was no catch used to handle the error. Add a catch after the offending then to handle this properly. The origin of this error lies in…
