Class to assign object properties

programming flash
1

I have created an object called myObj.

How do I create a class that I can call that will assign properties to myObj such that

myObj = {foo:15, bar:"hello"}

…?

BTW, I do not want to just say

var myObj:Object = {foo:15, bar:"hello"}

…because in fact I am going to be creating a bunch of objects all having the same properties, and there will be many more such objects.