Flash/Actionscript Basics: If – Then – Else Statement Syntax

Last Updated on April 7, 2013

Creating a basic if – then statement in flash or actionscript is easy. Here is the correct syntax.

The basic syntax is the following:

if (condition)
{
statement(s);
}

Here is an actual working example. If the variable userInput contains data, the value will be sent to the trace command.

if (userInput != undefined)
{
trace("Input is " + userInput);
}


Adding an else section is not much harder:

if (userInput != undefined)
{
trace("Input is " + userInput);
}
else
{
trace("Input is unknown" );
}