Instantiating JavaScript Objects Using Dynamic Class Names

Suppose you have a situation where you need to instantiate JavaScript objects using class names stored in variables. Here's an illustrative example:

// Define the class
MyClass = Class.extend({});

// Store the class name in a string
var classNameString = 'MyClass';

// Instantiate the object using the class name string
var myObject = new classNameString();

This approach, however, does not work. To achieve the desired behavior, you can use the following alternative:

var myObject = window[classNameString];

This approach works because the window object contains a reference to the global scope, which includes the defined classes. By accessing the class name stored in classNameString as a property of window, you can dynamically retrieve and instantiate the class.