JavaScript Class Referentiemanual
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JavaScript class
类是函数的一种,但我们不使用关键字 function 来对其初始化,而是使用关键字 class,并在 constructor() 方法中分配属性:
实例
创建一个 Car 类,然后基于这个 Car 类创建名为 "mycar" 的对象:
class Car { // 创建类 constructor(brand) { // 类构造方法 this.carname = brand; // 类主体、属性 } } mycar = new Car("Ford"); // 创建 Car 类的对象
For knowledge about classes, please read our JavaScript class tutorial.
Class method
Method | Description |
---|---|
constructor() | A special method used to create and initialize objects created in the class. |
Class keyword
Keyword | Description |
---|---|
extends | Extend class (inheritance). |
static | Define static methods for class. |
super | Reference superclass. |
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