Question

I have 3 MC on stage which are all alpha=0

var mcArray:Array = [mc1,mc2,mc3];
for (var j:int = 0; j < mcArray.length; j++)
{
    mcArray[j].alpha = 0;
}

I have one button which once I click then it will make 1 of the MC become alpha=1

revealBtn.buttonMode = true;
revealBtn.useHandCursor = false;
revealBtn.addEventListener(MouseEvent.CLICK, revealClick);

function revealClick(event:MouseEvent):void
{
    for (var j:int = 0; j < mcArray.length; j++)
    {
        mcArray[j].alpha = 1;
    }
}

But with the script above it will makes all 3 MC become alpha=1.

I know that this can achieve by using below code:

if(mc1.alpha!=1){
mc1.alpha=1
}
if(mc2.alpha!=1){
mc2.alpha=1
}
if(mc3.alpha!=1){
mc3.alpha=1
}

this code will give what I want to achieve but if there is more than 3 MC the lines of script will be longer.

Answer 1

revealBtn.buttonMode = true;
revealBtn.addEventListener(MouseEvent.CLICK, revealClick);

var mcArray:Array = [mc0,mc1,mc2];

function revealClick(event:MouseEvent):void
{
    for(var i:uint = 0; i<mcArray.length; i++){
        if(this['mc'+i].alpha !== 1){
            this['mc'+i].alpha = 1;
            break;
        }
    }
}