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NOT(~) Bitwise Operator in JavaScript

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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


Last Updated : 23 May, 2023
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