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 ...

Sometimes, we need to store a piece of information so that we can refer to it — often multiple times — later on. In real life, we would probably jot down a note in a notebook or on a post-it. In ...

Variables are made to receive values directly or through evaluated expressions compounding values and operators or results of function calls: the value is stored internally and the variable references ...