User Guide

174 ActionScript language elements

Returns

Boolean - A Boolean result of the logical operation.

See also

&& logical AND operator

! logical NOT operator

! expression

Inverts the Boolean value of a variable or expression. If expression is a variable with the

absolute or converted value

true, the value of !expression is false. If the expression x &&

evaluates to false, the expression !(x && y) evaluates to true.

The following expressions illustrate the result of using the logical NOT (!) operator:

! true returns false! false returns true

Availability: ActionScript 1.0; Flash Player 4

Operands

expression : Boolean - An expression or a variable that evaluates to a Boolean value.

Returns

Boolean - The Boolean result of the logical operation.

Example

In the following example, the variable

happy is set to false. The if condition evaluates the

condition

!happy, and if the condition is true, the trace() statement sends a string to the

Output panel.

var happy:Boolean = false;

if (!happy) {

trace("don't worry, be happy"); //traces don't worry, be happy

}

The statement traces because !false equals true.