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 ...

1. the basic javascript functionthe simplest way to declare a function in javascript. in below example. we have written a simple function called abcd(x,y) which is simply taking two parameters x and y ...

Functions are self-contained routines that can be “called” elsewhere within your JavaScript code. Along with loops and conditionals, functions are an essential means of organizing software.