JavaScript tutorial:
| Operator

 

The (|) operator is use to perform a bitwise OR on two expressions.

Syntax

result = expression1 | expression2

The | operator syntax has these parts:

Part

Description

result

Any variable.

expression1

Any expression.

expression2

Any expression.

Example

The | operator looks at the binary representation of the values of two expressions and does a bitwise OR operation on them. The result of this operation behaves as follows:

0101 (expression1)
1100 (expression2)
----
1101 (result)

Any time either of the expressions has a 1 in a digit, the result will have a 1 in that digit. Otherwise, the result will have a 0 in that digit.

For information on when a run-time error is generated by the | operator, see the Operator Behavior table.

See also: |= Operator, Operator Behavior, Operator Precedence, Operator Summary

 

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