为什么一个true一个false，我觉得都是false啊！

Question

function Person(name, age, job){

this.name = name;

this.age = age;

this.job =job;

this.sayName = sayName;

}

function sayName(){

alert(this.name);

}

var person1 = new Person("wo", 29, "software Engineer");

var person2 = new Person("ta", 27, "Doctor");

alert(person1.sayName == person2.sayName);         //~~~~~~~~~~~~~~~~~~·true

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

function Person(name, age, job){

this.name = name;

this.age = age;

this.job = job;

this.sayName = new Function("alert(this.name)"); // 与声明函数在逻辑上是等价的

}

var person1 = new Person("wo", 29, "software Engineer");

var person2 = new Person("ta", 27, "Doctor");

alert(person1.sayName == person2.sayName);       //~~~~~~~~~~~~~~~~~~~~~~~~false

Answer 1

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Answer 2

第一个sayName是外部函数，不属于构造函数内，不管它new不new，调用的都是同一个外部函数

Answer 3

兄弟，你两个类重名，两个变量重名，你改个名字就好了，