JavaScript Bitwise Operators

The JavaScript Bitwise Operators perform bit operations. All the decimal values converted into binary values (sequence of bits, i.e., 0100, 1100, 1000, 1001, etc.). Next, JavaScript bitwise operator will work on these bits such as shifting them left to right or converting bit value from 0 to 1, etc.

The below table shows the different JavaScript Bitwise operators and their meaning. For example, Consider x = 6 and y = 8 and their values in binary form are: x = 0110 and y = 1000

JavaScript Bitwise OperatorsMeaningExamples
&Bitwise ANDX & Y = 0000
|Bitwise ORX | Y = 1110
^exclusive ORX ^ Y = 1110
~complement~X = 00001001 (Not operator will convert all 0 into 1.)
<<Shift leftX << 1 = 00001100 (Bits will move 1 step left. If we use 2 or 3 then they shift accordingly)
>>Shift rightY >> 1 = 00000100

Let us see the Truth Table behind JavaScript Bitwise Operators

xyx & y X | yx ^ y
00000
01011
10011
11110

JavaScript Bitwise Operators Example

Let us see one example for a better understanding. For this JavaScript example, We are using two variables a and b, and their values are 9 and 65. We are going to use these two variables to show you various JavaScript Bitwise operations

<!DOCTYPE html>

<html>
<head>
    <title> JavaScriptBitwiseOperators </title>
</head>

<body>
    <h1> JavaScriptBitwiseOperators </h1>
<script>
    var a = 9, b = 65;
    
    document.write("Bitwise AND Operator a & b =  " + (a&b));
    document.write("<br \> Bitwise OR Operator a | b =  " + (a|b));
    document.write("<br \> Bitwise EXCLUSIVE OR Operator a^b =  " + (a^b));
    document.write("<br \> Bitwise NOT Operator ~a =  " + (~a));
    
    document.write("<br \> LEFT SHIFT Operator a << 1 =  " + (a << 1));
    document.write("<br \> RIGHT SHIFT Operator b >> 1 =  " + (b >> 1));
 </script>
</body>
</html>
JavaScript Bitwise Operators

In this JavaScript Bitwise Operators program, we declared 2 integers a and b and assigned the values 9 and 65. The binary form of 9 = 0001001 and 65 = 1000001.

The document write statements will perform the bitwise operations on a and b, then they will display the output. Lets see the JavaScript calculations

AND Operation = a&b

0001001 & 1000001 = 0000001 = 1

OR Operation = a || b

0001001 || 1000001 = 1001001 = 73

Exclusive OR Operation = a^b

0001001 ^ 1000001 = 1001000 = 72

Left Shift Operation: Left Shifting one position is equal to multiplying the number with 2. It means,

a << 1 = (9 * 2) = 18

If we say, a<<2 then multiplying the number with 4 and so on

OR

a << 1 = 0001001 << 1 = 0010010 = 18
Right Shift Operation = b>> 1

1000001 >> 1 = 0100000 = 32