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 ...

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 ...

Here's what beginning and experienced developers need to know about working with JavaScript's array, for loop, forEach, map, reduce, substring, and switch. Research suggests there are seven JavaScript ...