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 ...

Before Groovy 1.8, the standard tactic we Groovy script developers used to deal with this situation was to not define the local variables with the def keyword or with a static type declaration.