JavaScript Inheritance Done Right

Taming JavaScript

One of the worst (and possibly also one of the best) things about JavaScript is that it offers you many ways to do anything. Some tricks are simple and neat while others can be complex and confusing.

If you have done some research, you will likely have come across many ways of implementing inheritance in JavaScript. I have personally used a lot of variations over time in various projects but it’s not until recently that I have settled on a particular technique.

I have chosen this particular technique because I feel that it most closely resembles how most OO programming languages implement inheritance. To get it to work properly, you should use the prototype-based method of class definition. Here is an example of the technique in action:

function BaseClass(name) {
this.name = name;

BaseClass.prototype.foo = function (arg) {
return ‘This is the foo method with argument: ‘ + arg;

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