OO JS inheritance and prototype

Question

Why the second pattern is used more then the 1st when both of them do the same? Or I'm wrong?

function Foo1(){
    this.name = "Foo 1";
    this.hello = function(){
        console.log("hello", this.name);
    };
}

var test1 = new Foo1();
test1.hello();



function Foo2(){
    this.name = "Foo 2";
}

Foo2.prototype.hello = function(){
    console.log("hello", this.name);
};

var test2 = new Foo2();
test2.hello();

Answer 1

Objects occupy less memory this way. There needs to be only one function in a class, as opposed to one function for each instance. This also mirrors classical inheritance.