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 ...

When we store data in a data structure, we call it a variable. JavaScript variables are written in camel case. An example of camel case is: camelCase. You can declare a variable this way var myName = ...

In computer science, data is anything that is meaningful to the computer. JavaScript provides eight different data types which are undefined, null, boolean, string, symbol, bigint, number, and object.