__proto__ VS. prototype in JavaScript

Question

This figure again shows that every object has a prototype. Constructor function Foo also has its own __proto__ which is Function.prototype, a

Answer 1

I'll try a 4th grade explanation:

Things are very simple. A prototype is an example of how something should be built. So:

• I'm a function and I build new objects similar to my prototype

• I'm an object and I was built using my __proto__ as an example

proof:

function Foo() { }

var bar = new Foo()

// `bar` is constructed from how Foo knows to construct objects
bar.__proto__ === Foo.prototype // => true

// bar is an instance - it does not know how to create objects
bar.prototype // => undefined