How would you overload the [] operator in javascript

Question

I can't seem to find the way to overload the [] operator in javascript. Anyone out there know?

I was thinking on the lines of ...

MyClass.operator.lookup(index)
{
     return myArray[index];
}

or am I not looking at the right things.

Thanks in advanced

Answer 1

So you're hoping to do something like var whatever = MyClassInstance[4]; ? If so, simple answer is that Javascript does not currently support operator overloading.

Answer 2

I don't know the right answer, but I would assume that you'd need to define both the getter AND the setter. In c#, you'd do this with something like the following:

MyClass.operator.lookup(index)  
{  
    get { return myArray[index]; }  
    set { myArray[index] = value; }  
}

Answer 3

You can't overload operators in JavaScript.

It was proposed for ECMAScript 4 but rejected.

I don't think you'll see it anytime soon.