Dynamic instantiation in JavaScript

Question

Apart from eval, is there any other way to instantiate an object using variable argument list?

E.g.: var foo = instantiate(className, [arg1, arg2, ...])

Answer 1

Well you can always do as follows. Anything added to Dino prototype can be shared among the instantiated objects The difference from normal constructor pattern is, the instantiated objects do not have to have the exact same private properties set. They can be set dynamically for each one of them.

function Dino(a,b){
  for(i = 0; i< a.length; i++) this[a[i]] = b[i];
}

var props = ["foo", "bar"],
   values = [42, 37],
      obj = new Dino(props,values);
console.log(obj);