Snippets
comparison operator

How-to articles, tricks, and solutions about COMPARISON OPERATOR

How to Check for Empty/Undefined/Null String in JavaScript

In this tutorial, we are going to show you the ways of checking whether the JavaScript string is empty, undefined, or null. Just follow the guidelines.

javascript string comparison operator

How to Check if the Variable is Undefined

This tutorial provides the method of checking whether the type of the variable is undefined. Read about the differences between undefined and “undefined”.

javascript variable comparison operator data types