NOT(~) Bitwise Operator in JavaScript

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:

• Chrome
• Edge
• Firefox
• Opera
• Safari

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