Question

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Create instance of “Class” Using “Reflection” in JavaScript

Java has Class.forName("XYZClass") to load class at run time. Is there any alternate for Class.forName("XYZClass") in JavaScript?

Answer 1

Personally I think you are trying to literally translate Java code to JavaScript rather than using idiomatic constructs (well, Class.forName() isn’t idiomatic in Java as well). However, let’s give it a try:

function XYZClass() {
    this.answer = 42;
}

This is your class. Normally you would create it using:

var xyz = new XYZClass();

With “reflection” in JavaScript this works:

var className = "XYZClass";
var xyz = new window[className]();