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Bitwise AND Operator (&) (JavaScript)

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Performs a bitwise AND on two expressions.

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result=expression1&expression2

Parameters

result: Any variable.
expression1: Any expression.
expression2: Any expression.

Remarks

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

JavaScript

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0101   (expression1)
1100   (expression2)
----
0100   (result)

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

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. Also supported in Metro style apps. See Version Information.

Reference

Bitwise AND Assignment Operator (&=) (JavaScript)

Concepts

Operator Precedence (JavaScript)

Operator Summary (JavaScript)

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