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 by ...

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 of the ...

Many business websites use forms to capture user data. These forms use HTML markup and optionally JavaScript functions. Your website may use URL variables, which allow you to pass data items as part ...