super.js

class Humanoid {
	constructor(name) {
		this.name = name;
	}
	say() {
		console.log(this.name);
	}
}

class Human extends Humanoid {
	constructor(name) {
		super(name);
	}
	say() {
		Humanoid.prototype.say.call(this);
    // this what a real super.say() is
	}
}