Bitwise NOT Operator (~) (Windows Scripting - JScript)

Performs a bitwise NOT (negation) on an expression.

Syntax

result = ~ expression

All unary operators, such as the ~ operator, evaluate expressions as follows:

If applied to undefined or null expressions, a run-time error is raised.
Objects are converted to strings.
Strings are converted to numbers if possible. If not, a run-time error is raised.
Boolean values are treated as numbers (0 if false, 1 if true).

The operator is applied to the resulting number.

The ~ operator looks at the binary representation of the values of the expression and does a bitwise negation operation on it.

Any digit that is a 1 in the expression becomes a 0 in the result. Any digit that is a 0 in the expression becomes a 1 in the result.

The following example illustrates use of the bitwise NOT (~) operator.

var temp = ~5;

The resulting value is -6, as shown in the following table.

Expression	Binary value (two's complement)	Decimal value
5	00000000 00000000 00000000 00000101	5
~5	11111111 11111111 11111111 11111010	-6

Date	History	Reason
September 2009	Modified example.	Content bug fix.

September 2009

Modified example.

Content bug fix.