Javascript Bitwise Operator OR
Introduction
The bitwise OR operator is represented by a single pipe character (|) and works on two numbers.
Bitwise OR follows the rules in this truth table:
| BIT FROM FIRST NUMBER | BIT FROM SECOND NUMBER | RESULT |
|---|---|---|
| 1 | 1 | 1 |
| 1 | 0 | 1 |
| 0 | 1 | 1 |
| 0 | 0 | 0 |
A bitwise OR operation returns 1 if at least one bit is 1.
It returns 0 only if both bits are 0.
Using the same example as for bitwise AND, if you want to OR the numbers 25 and 3 together:
let result = 25 | 3; console.log(result); // 27
The result of a bitwise OR between 25 and 3 is 27:
Or operation: 25 = 0000 0000 0000 0000 0000 0000 0001 1001 3 = 0000 0000 0000 0000 0000 0000 0000 0011 --------------------------------------------- OR = 0000 0000 0000 0000 0000 0000 0001 1011
In each number, four bits are set to 1, so these are passed through to the result.
The binary code 11011 is equal to 27.
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