js构造函数的使用注意

// 构造函数

function Star(uname,age,sex) {

this.name = uname;

this.age = age;

this.sex = sex;

this.sing = function(song){

console.log(song);

}

}

// 对象

var ldh = new Star('刘德华', 18, '男');

console.log(ldh.name);

ldh.sing('冰雨');