JS Syntax

Understand the basic syntax rules of JavaScript.

JavaScript Syntax

JavaScript syntax is the set of rules, how JavaScript programs are constructed.

JavaScript Values

The JavaScript syntax defines two types of values:

Fixed values (Literals)
Variable values (Variables)

JavaScript Variables

In a programming language, variables are used to store data values.

JavaScript uses the keywords var, let and const to declare variables.

An equal sign = is used to assign values to variables.

Example

let x;
x = 6;
let y = 5;
let z = x + y;
console.log(z);