How to declare a dynamic local variable in Javascript

Question

I want to create a local variable dynamically. JavaScript: Dynamically Creating Variables for Loops is not exactly what I am looking for. I dont want an array. I want to access

Answer 1

The example below demonstrates how with gets a value from the object.

var obj = { a : "Hello" }
with(obj) {
  alert(a) // Hello
}

But I want to notice: with is deprecated!