在Javascript中构造对象的两种方法

function Person(age,name){
    this.name = name;
    this.age  = age;
    this.speak = function(){...}
}

function Person(age,name){
    var p = {}
    p.name = name;
    p.age = age;
    p.speak = function(){...}
    return p;
}
function Person(age,name){
    this.name = name