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.

So, let’s get started. Declaring variables Nowadays JavaScript has three different keywords to declare a variable — var, let and, const. Each has its own properties and particularities.

You can adjust other variable properties as well. Click in the upper left corner of the data window to display the data pop-up menu. Figure 2.17: Data Pop-up Menu Choose Define Variables from the ...

The Groovy 1.8 Release notes describes the problem in a slightly different way: “When defining variables in a script, those variables are actually local to the script’s run method, so they are ...