[RESOLVED] simple flashcard script

[rem45acp]

Hi, I am trying to create a simple flashcard script using arrays. I have gotten pretty far, but I can't get the function right to forward to the next question in the flash card array. The function to go back works fine. I originally wrote it in javascript, and transfered it into as3. Here is my code:

import km.core.*;
import km.components.*;
//flashcards array
var cards = [

['card1', 'answer1'],
['card2', 'answer2'],
['card3', 'answer3']

];

var i = 0;

txt2.text = cards[i][0];

var back:LabelButton = new LabelButton;
var forward:LabelButton = new LabelButton;
var flip1:LabelButton = new LabelButton;
var flip2:LabelButton = new LabelButton;
ScriptedSkin.applyTo(back,forward,flip1,flip2);

back.setSize(90,24);
back.move(114,30);
back.label.text = '<< Back';

forward.setSize(90,24);
forward.move(424,30);
forward.label.text = 'Next >>';

flip1.setSize(90,24);
flip1.move(275,30);
flip1.label.text = 'Show';

flip2.setSize(90,24);
flip2.move(275,30);
flip2.label.text = 'Hide';

addChild(back);
addChild(forward);
addChild(flip1);

back.onClick = function() {
//this works fine navigating the array
i = (i == 0) ? cards.length-1 : i-1;
txt2.text = cards[i][0];
//clear answer area
txt1.text = "";
}

forward.onClick = function() {
//for some reason, this doesn't work
i = (i == cards.length-1) ? 0 : i+1;
txt2.text = cards[i][0];
}

flip1.onClick = function() {
	txt1.text = cards[i][1];
}
}

[blanius]

I don't really get the syntax you are using, I reccognize it as shorthand and I see guys like Wilbert use it. So rather than fix it per say I rewrote it as

forward.onClick = function() {
trace (i==cards.length-1);
if (i==cards.length-1){
	i=0;
	}else{
	++i
	}
	txt2.text = cards[i][0];
	
}

and that works fine.

[Chris_Seahorn]

those are tertiary operators, a shorhand way of writing "if" clauses....very popular and yes......used by Wilbert wherever appropriate

[w.brants]

Yes, I use it sometimes
There's nothing wrong with the code in this case. It's a little KM problem.
If you change your variable declaration from

var i = 0;

into

var i:int = 0;

The error is gone.
I would advise you to use the debug version of the Flash Player. In this case for example it shows an error that might help Bob fix the problem.

[rem45acp]

Ah the var i:int=0 was the only thing missing! Thank you! I probably shouldn't be using shorthand like that and should be writing it all the way out, but I figured if it worked in javascript it would work in flash, and it does.

[blanius]

The shorthand is a good thing, I just didn't follow it.
Chris and Wilbert are much more experienced coders than I am. Frankly till this week I hadn't had a day off from my real job in about 20 days, I do this stuff on the side from time to time and get a little rusty between.