Number - A number variable couldn't be more straightforward ... This calls a built-in JavaScript function (we'll learn more about these later) called alert() which creates a pop-up dialogue ...

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 ...

The functions provide various ways to access the contents of a string variable. Let?s take a closer look at these functions. While JavaScript has many applications, working with string values is ...