Create object from string

Question

Is it possible to create a new object using a string? For example, how can I convert the string "product" to var p = new Product?

Thanks in advance.

EDIT

What I want to do is to have a menu with <a href="#home"></a><a href="#products">products</a> and create the corresponding object from the href each time.

Answer 1

If you know the context, yes. Let's say you're in a browser environment and Person is a global constructor. Because any global variable is a property of the global object, it means you can access to Person through the global object window:

var p = new Person() 

Is equivalent to:

var p = new window.Person() 

So you can use the square bracket notation:

var p = new window["Person"](); 

Of course this is valid for every kind of object. If you don't want pollute the global scope, you can have:

var mynamespace = {};  mynamespace.Person = function Person() {..}  var p = new mynamespace["Person"]();