Performs a bitwise AND operation on two 32-bit expressions.
Syntax
result = expression1 & expression2
Parameters
result
The result of the operation.
expression1
Any expression.
expression2
Any expression.
Remarks
The & does a bitwise AND operation on the each of the bits of two 32-bit expressions. If both of the bits are 1, the result is 1. Otherwise, the result is 0.
| Bit1 | Bit2 | ANDed Value |
|---|---|---|
| 0 | 0 | 0 |
| 1 | 1 | 1 |
| 1 | 0 | 0 |
| 0 | 1 | 0 |
The following examples show how to use the & operator.
// 9 is 00000000000000000000000000001001
var expr1 = 9;
// 5 is 00000000000000000000000000000101
var expr2 = 5;
// 1 is 00000000000000000000000000000001
var result = expr1 & expr2;
document.write(result);
// Output: 1
Requirements
Supported in the following document modes: Quirks, Internet Explorer 6 standards, Internet Explorer 7 standards, Internet Explorer 8 standards, Internet Explorer 9 standards, Internet Explorer 10 standards, Internet Explorer 11 standards. Also supported in Store apps (Windows 8 and Windows Phone 8.1). See Version Information.
See Also
Bitwise AND Assignment Operator (&=)
Operator Precedence
Operator Summary (JavaScript)