Adobe Flash CS4 Professional for Windows and Macintosh: Visual QuickStart Guide

Chapter 15

440

The Mystery of the If Statement

Often when you create Flash content, you

want one thing to happen under certain

conditions, and something else to happen

if those conditions aren’t met. Your script

needs to take di erent paths depending on

the state of a airs.

One way to accomplish this is by using the

if

statement, which takes this format:

if( condition )

{

action();

}

Here’s a real-world example:

if( numLives == 0 )

{

gotoAndStop( “gameOver” );

}

An

if

statement consists of the keyword

if

, followed by an opening parenthesis,

then a condition that is either true or false,

a closing parenthesis, and then a list of

statements between ...