Actionscript 3 setting multiple variables of an object in an array possible?

问题

Right now, I have many MovieClips's in my array. I want to update all the alpha values of the MovieClips in my array.

Right now, I am using a for loop but this is not the fastest way to do it.

Is there a way to set values for all the items in my array?

Thanks!

回答1:

No. ActionScript doesn't have any constructs that allow you to change properties of all elements of the array with a single line of code. There is an Array.forEach() method, but I think that would be slower than a simple for(i = 0; i < len; i++) loop as there is an overhead of calling a function for each item of the array.

回答2:

You'll have to iterate through all the MovieClips anyway, even if there was a language structure for ease of typing.

回答3:

for each(var m:MovieClip in myArray) {
    m.alpha = 0.3;
}

a for loop isn't bad.

来源：https://stackoverflow.com/questions/2130569/actionscript-3-setting-multiple-variables-of-an-object-in-an-array-possible