What's the difference between this.bla to Object.prototype.bla

Question

Let\'s say I have this code:

(function(global) {
    function Bar(foo) {
        this.foo = foo;
        return this;
    }

    Bar.prototype.getFoo = funct         


        

Answer 1

An aside :

With prototypal inheritance, there's a fundamentel difference between own properties and inherited ones.

Sometimes this can be quite relevant.

A classic for loop that is often used, only checks for the 'own properties', taking this form :

for (prop in array) {
if (array.hasOwnProperty(prop)) {
      dostuff
}

When assigning to this, alle properties are own properties, making the hasOwnProperty check irrelevant.