How to use an array in actionscript?

Question

var fruit:Array = new Array();

var frName:String;

var i:Number;

save_btn.addEventListener(MouseEvent.CLICK, storeName);

function storeName(Event:MouseEvent)
{

 frName = name_txt.text;

 fruit[i] = frName;

 i++;
}

detail_btn.addEventListener(MouseEvent.CLICK, dispName);

function dispName(Event:MouseEvent)

{

 for(i=0; i<=1; i++)

 {
  trace(fruit[i]);
 }
}

The script has two buttons: one for saving the text in a fruit array and the other for displaying the text.

However, when I click the display button, the script shows undefined as output in actionscript. Please help.

scunliffe · Accepted Answer · 2011-01-18 16:32:51Z

1

When you defined your "i" variable you never set a value... e.g. it is "undefined". Just set it to zero.

var i:Number = 0;

answered Jan 18, 2011 at 16:32

scunliffe

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2 Comments

Sam Over a year ago

bt i put the value in for loop also for i=0 why twice I have to give the value??

scunliffe Over a year ago

When you are populating the array originally... The first index you are storing on is "undefined"... After that, if you're lucky (I haven't tested) the ++ increments from undefined to 1. By ensuring the values are stored correctly, they'll extract correctly too ;-)

Matthew Cook · Accepted Answer · 2011-01-18 16:35:28Z

1

declaring i as a global variable is making things difficult. Perhaps try rewritting like so:

var fruit:Array = new Array();

save_btn.addEventListener(MouseEvent.CLICK, storeName);

function storeName(Event:MouseEvent){
  fruit.push(name_txt.text);
}

detail_btn.addEventListener(MouseEvent.CLICK, dispName);

function dispName(Event:MouseEvent){
  for(var f:String in fruit){
    trace(f);
  }
}

answered Jan 18, 2011 at 16:35

Matthew Cook

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2 Comments

Sam Over a year ago

i m sorry bt i have jst started AS 3.0 and i don't know the push command etc. as they are advanced technique i think so...

Matthew Cook Over a year ago

Adobe's Livedocs are an excellent reference: livedocs.adobe.com/flash/9.0/ActionScriptLangRefV3 it's often easier to use built-in functionality, rather than try and implement your own looping, adding, etc.

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