typeof

Availability

Flash Player 5.

Usage

typeof(expression)

Parameters

expression A string, movie clip, button, object, or function.

Description

Operator; a unary operator placed before a single parameter. The typeof operator causes the Flash interpreter to evaluate expression; the result is a string specifying whether the expression is a string, movie clip, object, function, number, or Boolean value. The following table shows the results of the typeof operator on each type of expression:

Parameter Output
String string
Movie clip movieclip
Button object
Text field object
Number number
Boolean boolean
Object object
Function function