Question

Possible Duplicate:
Should I use prototype or not?
Closures in auto executing functions vs objects

So, I’m creating an object in JavaScript, there are two ways of going about this:

function car(){
    this.engineOn = false;
    this.startEngine = function(){
        this.engineOn = true;
    }
}

OR

function car(){
    this.engineOn = false;
}
car.prototype.startEngine = function(){
    this.engineOn = true;
}

What is the best way to do this? And are there any benefits or disadvantages to either method?

Answer 1

yes, prototype is not created with each object, but is created once for all objects.