Bitwise OR assignment (|=)

The bitwise OR assignment operator (|=) uses the binary representation of both operands, does a bitwise OR operation on them and assigns the result to the variable.

Syntax

Operator: x |= y
Meaning:  x  = x | y

Examples

Using bitwise OR assignment

let a = 5;
a |= 2; // 7
// 5: 00000000000000000000000000000101
// 2: 00000000000000000000000000000010
// -----------------------------------
// 7: 00000000000000000000000000000111

Specifications

Browser compatibility

See also

• Assignment operators in the JS guide
• Bitwise OR operator
• Logical OR assignment (||=)