JavaScript

What is memory leak? How to avoid memory leak in JavaScript?

Why we should use ‘use strict’ in JavaScript?

How to check an object is empty in JavaScript?

How to check variable is an object in JavaScript?

What are the differences between freeze, seal and preventExtensions?

How to stop adding, modifying and deleting an object’s properties?

How to check if string contains a substring in JavaScript?

How to check if an array contains a value in JavaScript?

How to catch all JavaScript errors and send to server?

How to load JavaScript file dynamically?