Question

I have a movieclip with class “myClass” and no instance name. I’m trying to change the alpha using this

var i:int = this.numChildren;
while(i--){
    if (this.getChildAt(i) is myClass){

        this.getChildAt(i).alpha = 0.5;
    }
}

I have two problems with this approach:

1- I can’t use the string name of the class. There is no getClass or some method to compare like?

if (this.getChildAt(i) is "myClass"){

2- When I find the movieclip and change the alpha, I break the existing animation. why?

Thanks

Answer 1

getDefinitionByName() (see docs here) is what you need.

var className:String = "com.MyClass";
var clazz:Class = flash.utils.getDefinitionByName(className) as Class;
var i:int = this.numChildren;

while(i--){
    if (this.getChildAt(i) is clazz){
        this.getChildAt(i).alpha = 0.5;
    }
}