javascript - 这是 Javascript 中类继承的正确方法吗？

Question

有人可以确认下面的脚本是否确实是 Javascript 中类继承的正确方法吗？

错误的方式

var Person = function () {
   this.className = this.constructor.toString().match(/^function ([a-z_0-9]+)\(/i)[1];
   console.log( this.className ); //ERROR
}

var Mark = function () {
   Person.call(this);
}

Mark.prototype             = Object.create( Person.prototype );
Mark.prototype.constructor = Mark;

new Person; // I LIKE TO DISPLAY 'Person'
new Mark; // I LIKE DISPLAY 'Mark'

正确的方式

function Person () {
   this.className = this.constructor.toString().match(/^function ([a-z_0-9]+)\(/i)[1];
   console.log( this.className );
}

function Mark () {
   Person.call(this); // Class Mark extend Person
}

Mark.prototype             = Object.create( Person.prototype );
Mark.prototype.constructor = Mark;

function Matteo () {
    Mark.call(this); // Class Matteo extend Mark
}

Matteo.prototype             = Object.create( Mark.prototype );
Matteo.prototype.constructor = Matteo;

new Person; // Displays: 'Person'
new Mark; // Displays: 'Mark'
new Matteo; // Display: 'Matteo'

Answer 1

这对我有用:

function Person () {
  console.log(this.constructor.toString().match(/^function ([a-z_0-9]+)\(/i)[1]);
}

function Mark () {
  Person.call(this);
}

function Matteo() {
  Mark.call(this);
}

new Person(); // "Person"
new Mark(); // "Mark"
new Matteo(); // "Matteo"