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AND (&) - JavaScript | MDN
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AND (&)

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AND (&) 1 1 .

In this article

const a = 5; // 00000000000000000000000000000101
const b = 3; // 00000000000000000000000000000011

console.log(a & b); // 00000000000000000000000000000001
// Expected output: 1

js
a & b;

32 (0 1) . 32 . 32 32 .

js
Before: 11100110111110100000000000000110000000000001;
After: 10100000000000000110000000000001;

( , ) .

, .

AND :

a b a AND b
0 0 0
0 1 0
1 0 0
1 1 1
js
.    9 (base 10) = 00000000000000000000000000001001 (base 2)
    14 (base 10) = 00000000000000000000000000001110 (base 2)
                   --------------------------------
14 & 9 (base 10) = 00000000000000000000000000001000 (base 2) = 8 (base 10)

x 0 AND 0 .

AND

js
// 5: 00000000000000000000000000000101
// 2: 00000000000000000000000000000010
5 & 2; // 0

Specification
ECMAScript 2027 LanguageSpecification
# prod-BitwiseANDExpression

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