Question

What’s best…

create variables like this:

var one = 1;
var two = 2;
var three = 3;

or like this:

var myStuff = {}
myStuff.one = 1;
myStuff.two = 2;
myStuff.three = 3;

I’ve seen both ways and don’t understand what the main difference is. Can anyone clarify for me please.

Answer 1

With the first…

• it adds 3 names to the variable environment
• the variables can not be directly accessed outside its variable environment

With the second…

• it creates an object, and assigns it to a single name in the environment
• the object itself can be passed outside the enclosing environment
• updates to the object can be observed by whatever code is referencing the object