JavaScript variables hold a wide variety of information and can be used with virtually any data type. Here's how to use variables to store numbers, text strings, objects, and more.

Nowadays JavaScript has three different keywords to declare a variable — var, let and, const. Each has its own properties and particularities. Let’s start by making a simple comparison table ...

How to Populate Text Fields From URL Variables. Many business websites use forms to capture user data. These forms use HTML markup and optionally JavaScript functions. Your website may use URL ...