NOT(~) Bitwise Operator in JavaScript (original) (raw)

Last Updated : 23 May, 2023

JavaScript NOT(~) Operator is used to invert the bits of a number. The operator is represented by "~" symbol. It is a unary operator since it requires only one operand to operate. There are various uses of the Bitwise NOT operator which include bit-masking, finding two's complement as well as error correction.

Let's look at the truth table below to better understand the output of the NOR operation.

A OUTPUT ( ~A )
0 1
1 0

Syntax:

a ~ b

Example 1: In this example, we will perform basic NOT operation on Numbers.

JavaScript `

console.log(24); console.log(10); console.log(~-10);

`

Output:

-25 -11 9

Example 2: In this example, we will use the Bitwise NOT operator to find Two's Complement of a number.

JavaScript `

function twoComplement(n) { let j = ~(n.toString(2)) + 1; return j; } console.log(twoComplement(2)); console.log(twoComplement(-2));

`

Output: To find the two's complement we first convert the decimal number to binary then invert the bits using NOT Operator and add 1 afterward.

-10 10

Supported Browsers:

We have a complete list of JavaScript Bitwise Operators, to check those please go through, the JavaScript Bitwise Operators article