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Discussion on: Explain Inheritance in JavaScript Classes Like I'm Five

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Replies for: Despite its complexity, probably one of the biggest advantages you get from prototypal inheritance is the fact that all properties and methods in t...

 
gmartigny profile image
Guillaume Martigny •

We're getting off tracks here, but composition don't duplicate anything. Try this:

const canSpeak = {
    speak: msg => console.log(msg),
};
const me = Object.assign({}, canSpeak);
me.speak("Hello"); // => Hello
const you = Object.assign({}, canSpeak);
console.log(me.speak === you.speak); // => true
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somedood profile image
Basti Ortiz •

Oh, I just wanted to mention a "feature" that comes with prototypal inheritance for the sake of discussion since this post is about prototypal inheritance in the first place.

Also, I never actually thought of composition that way. I didn't know that the two objects would end up referencing the same speak method. That's pretty cool. Thanks for the heads up!