Are Unity's JS OOP functions customized?

Questions & Answers
1

Hello,

I’m learning implementation of OOP in JS, and seem to be getting conflicting answers from Javascript textbooks and Unity JS tuts.

Case in point:

    function smpl_generic (a: float, b: float, c: float)
{
	this.a = a;
	this.b = b;
	this.c = c;
}

…barfs with ‘a’ not being a member of smpl_generic (filename). Google book link in context.

This, from a WalkerBoy tutorial seems to work, however:

class Test
{
 var a;
 function Test(aA: float)
  {
    a = aA;
  }
}

To compound my confusion, from what I’ve been reading is that JS creates classes by itself without announcing them, and that I need to create prototypes for methods. This is NOT from what I’ve seen being written.

In the link I provided (it’s just a single block of text), can someone explain to me what exactly differs in Unity’s implementation of JS?

2

So I’m afraid the first thing to learn is that Unity Script (JavaScript) is not at all like ECMAScript (JavaScript) they share some of the same syntax but Unity Script is a .NET based language built on top of Boo. If you want to learn JavaScript go write some HTML5 for a browser - if you want to learn Unity Script, be aware that there are significant differences to JavaScript and your JavaScript reference books are not going to help much. Buy a Unity programming book or program in C# (which is the same as C# everywhere).

3

You’d be better off learning ActionScript 3 if you want to learn Unityscript. It’s a lot more similar. Just ignore Javascript, it doesn’t really have anything to do with Unity.