These forms use HTML markup and optionally JavaScript functions. Your website may use URL variables, which allow you to pass data items as part of the URL for a particular page.

In today’s tutorial, we’re going to learn how to declare, interact, and scope variables in JavaScript. We’ll introduce new concepts and important JavaScript keywords like var, let and const.

Variables hold a wide variety of information temporarily. The JavaScript data types that can be stored in a variable include: JavaScript variables can hold a few other kinds of data, but these are ...