The bitwise AND operator is & and works on two values.

Bitwise AND uses the following truth table to perform an AND operation.

Bit From First Number | Bit From Second Number | Result |
---|---|---|

1 | 1 | 1 |

1 | 0 | 0 |

0 | 1 | 0 |

0 | 0 | 0 |

The result will be 1 only if both bits are 1. If either bit is 0, then the result is 0.

The following example uses AND on the numbers 25 and 3:

var result = 25 & 3; console.log(result); //1

Here is how it worked.

25 = 0000 0000 0000 0000 0000 0000 0001 1001 3 = 0000 0000 0000 0000 0000 0000 0000 0011 --------------------------------------------- AND = 0000 0000 0000 0000 0000 0000 0000 0001

Every other bit of the resulting number is set to 0, making the result equal to 1.

- Bitwise Operators
- Bitwise NOT
- Bitwise OR
- Bitwise XOR
- Bitwise Left Shift
- Bitwise Signed Right Shift
- Bitwise Unsigned Right Shift