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JScript Bitwise NOT Operator (~)

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

Syntax: JScript Bitwise NOT Operator (~)

result = ~ expression

Arguments: JScript Bitwise NOT Operator (~)

result

Any variable.

expression

Any expression.

Remarks: JScript Bitwise NOT Operator (~)

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. The result of this operation behaves as follows:

0101 (expression)

----

1010 (result)

1011

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.

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