JavaScript Assignment Operators

What Are Assignment Operators?

Assignment operators are used to assign values to variables. The most basic one is = , but JavaScript also provides compound operators that perform an operation and assignment at the same time.

List of Assignment Operators

1. Basic Assignment (=)

Assigns a value to a variable.

let a = 10;
console.log(a); // Output: 10

2. Add and Assign (+=)

Adds and then assigns the result to the variable.

let x = 10;
x += 5; // Equivalent to: x = x + 5
console.log(x); // Output: 15

3. Subtract and Assign (-=)

let x = 15;
x -= 2; // x = x - 2
console.log(x); // Output: 13

4. Multiply and Assign (*=)

let x = 13;
x *= 2; // x = x * 2
console.log(x); // Output: 26

5. Divide and Assign (/=)

let x = 26;
x /= 2; // x = x / 2
console.log(x); // Output: 13

6. Modulus and Assign (%=)

let x = 13;
x %= 4; // x = x % 4
console.log(x); // Output: 1

7. Exponentiation and Assign (**=)

let x = 2;
x **= 3; // x = x ** 3
console.log(x); // Output: 8

Bitwise Assignment Operators (Advanced)

Left Shift and Assign (<<=)< /h3>

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let x = 1;
x <<= 2; // x = x << 2 (binary left shift)
console.log(x); // Output: 4

Right Shift and Assign (>>=)

let x = 4;
x >>= 1; // x = x >> 1
console.log(x); // Output: 2

Summary Table