Microsoft JScript
~ Operator
Language Reference
Version 1

See Also

Used to perform a bitwise NOT (negation) on an expression.
result = ~ expression

The ~ operator syntax has these parts:

Part Description
result Any variable.
expression Any expression.
All unary operators, such as the ~ operator, evaluate expressions as follows:

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. The result of this operation behaves as follows:

0101 (expression)
1010 (result)

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.