JavaScript Assignment Operators

Assignment operators in JavaScript are used to assign values to variables.

They can also update the value of a variable by combining an operation with assignment.

1. Basic Assignment (=)

Assigns a value to a variable.

let x = 10; // x now holds 10

2. Add and Assign (+=)

Adds a value to the variable and updates it.

let x = 5;
x += 3; // Same as x = x + 3
console.log(x); // 8

3. Subtract and Assign (=)

Subtracts a value from the variable and updates it.

let x = 10;
x -= 4; // Same as x = x - 4
console.log(x); // 6

4. Multiply and Assign (=)

Multiplies the variable by a value and updates it.

let x = 5;
x *= 2; // Same as x = x * 2
console.log(x); // 10

5. Divide and Assign (/=)

Divides the variable by a value and updates it.

let x = 20;
x /= 4; // Same as x = x / 4
console.log(x); // 5

6. Modulus and Assign (%=)

Calculates remainder and updates the variable.

let x = 10;
x %= 3; // Same as x = x % 3
console.log(x); // 1

Summary Table

Operator	Meaning	Example
=	Assign	x = 5
+=	Add & assign	x += 3
-=	Subtract & assign	x -= 2
*=	Multiply & assign	x *= 2
/=	Divide & assign	x /= 4
%=	Modulus & assign	x %= 3