User Guide

Constants 37

Example

The following example shows how

newline displays output from the trace() statement on

multiple lines.

var myName:String = "Lisa", myAge:Number = 30;

trace(myName+myAge);

trace("-----");

trace(myName+newline+myAge);

// output:

Lisa30

-----

Lisa

See also

trace function

null constant

A special value that can be assigned to variables or returned by a function if no data was

provided. You can use

null to represent values that are missing or that do not have a defined

data type.

Availability: ActionScript 1.0; Flash Player 5

Example

The following example checks the first six values of an indexed array and outputs a message if

no value is set (if the value ==

null):

var testArray:Array = new Array();

testArray[0] = "fee";

testArray[1] = "fi";

testArray[4] = "foo";

for (i = 0; i < 6; i++) {

if (testArray[i] == null) {

trace("testArray[" + i + "] == null");

}

The output is the following:

testArray[2] == null

testArray[3] == null

testArray[5] == null