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 ...

However you shouldn't write off the idea of the global variable because it has new life in the form of object oriented programming. In this paradigm the objects are the fundamental modular division ...

The most important characteristic of a variable is the scope of its name. Scope refers to the section of the program that a variable name can be relied upon to label the same unit of storage. In more ...