Question

normally to create an object you would write:

function Dog(name) {  
  this.name = name;  
}  

fifi = new Dog("fifi");  

How do I dynamically name the object so that I can write:

var name = "fifi";  
[name] = new Dog(name); 

to achieve the same outcome as:

fifi = new Dog("fifi");

Answer 1

If you know the object you’re creating the variable on (a property, not just a variable) you can use bracket notation, like this:

var dogs = {};
dogs[name] = new Dog(name);

Later you could access it either way:

dogs.fifi
//or...
dogs["fifi"]

If it’s a global variable you’re after, that object (instead of dogs above) would just be window.