How to declare multiple Variables in JavaScript?

In this article, we will see how to declare multiple Variables in JavaScript. The variables can be declared using var, let, and const keywords. Variables are containers that store some value and they can be of any type.

These are the following ways to declare multiple variables:

Declaring Variables Individually

In this case, we will declare each variable using the var, let, or const keywords.

Syntax:

let x = 20;
let y = 30;
let z = 40;

Example: In this example, we are declaring three different variables.

Javascript

let x = 20;
let y = 'G';
let z = "GeeksforGeeks";

console.log("x: ", x);
console.log("y: ", y);
console.log("z: ", z);

Output

x:  20
y:  G
z:  GeeksforGeeks

Declaring Variables in a Single Line

You can declare multiple variables in a single line using the var, let, or const keyword followed by a comma-separated list of variable names.

Syntax:

let x = 20, y = 30, z = 40;

Example: In this example, we are defining the three variables at once.

Javascript

let x = 20,
    y = 'G',
    z = "GeeksforGeeks";

console.log("x: ", x, "\ny: ", y, "\nz: ", z);

Output

x:  20 
y:  G 
z:  GeeksforGeeks

Using Destructuring Assignment

You can also use de-structuring assignments to declare multiple variables in one line and assign values to them.

Syntax:

const [var1, var2, var3] = [val1, val2, val3];

Example: In this example, we are declaring three different variable by destructuring them at once.

Javascript

const [x, y, z] = [20, 'G', "GeeksforGeeks"];

console.log("x: ", x, "\ny: ", y, "\nz: ", z);

Output

x:  20 
y:  G 
z:  GeeksforGeeks