SOURCE

window.onload = () => {
    Father.prototype.firstName = 'zhuo';
    function Father(){}

    function Son(){}

    function inherit(target, origin){
        function F(){}
    F.prototype = origin.prototype;
    target.prototype = new F();
    target.prototype.constructor = target;
    target.prototype.uber = origin.prototype;			//target的超类
    }

    inherit(Son, Father);

    Son.prototype.lastName = 'xiao jun';

    var father = new Father();
    var son = new Son();

    console.log('son firstName: '+ son.firstName);
    console.log('son lastName: '+ son.lastName);
    console.log('father firstName: '+ father.firstName);
    console.log('father lastName: '+ father.lastName);

}