有沒有辦法在ES6/Node 4中創建接口？

Question

ES6在節點4中完全可用。我想知道它是否包含定義方法合約的接口概念，如MyClass implements MyInterface。

我找不到很多與我的谷歌搜索，但也許有一個很好的技巧或解決方法可用。

Answer 1

接口不是ES6的一部分，但類是。

如果你真的需要它們，你應該看看支持它們的TypeScript。

Answer 2

在評論debiasej寫了下面的文章中提到的詳細解釋了設計模式（基於接口，類）：

http://loredanacirstea.github.io/es6-design-patterns/

設計模式的書在JavaScript也可能對您有用：

http://addyosmani.com/resources/essentialjsdesignpatterns/book/

設計模式=類+接口或多繼承

ES6 JS中的工廠模式示例（運行：node example.js）：

"use strict"; 

// Types.js - Constructors used behind the scenes 

// A constructor for defining new cars 
class Car { 
    constructor(options){ 
    console.log("Creating Car...\n"); 
    // some defaults 
    this.doors = options.doors || 4; 
    this.state = options.state || "brand new"; 
    this.color = options.color || "silver"; 
    } 
} 

// A constructor for defining new trucks 
class Truck { 
    constructor(options){ 
    console.log("Creating Truck...\n"); 
    this.state = options.state || "used"; 
    this.wheelSize = options.wheelSize || "large"; 
    this.color = options.color || "blue"; 
    } 
} 


// FactoryExample.js 

// Define a skeleton vehicle factory 
class VehicleFactory {} 

// Define the prototypes and utilities for this factory 

// Our default vehicleClass is Car 
VehicleFactory.prototype.vehicleClass = Car; 

// Our Factory method for creating new Vehicle instances 
VehicleFactory.prototype.createVehicle = function (options) { 

    switch(options.vehicleType){ 
    case "car": 
     this.vehicleClass = Car; 
     break; 
    case "truck": 
     this.vehicleClass = Truck; 
     break; 
    //defaults to VehicleFactory.prototype.vehicleClass (Car) 
    } 

    return new this.vehicleClass(options); 

}; 

// Create an instance of our factory that makes cars 
var carFactory = new VehicleFactory(); 
var car = carFactory.createVehicle({ 
      vehicleType: "car", 
      color: "yellow", 
      doors: 6 }); 

// Test to confirm our car was created using the vehicleClass/prototype Car 

// Outputs: true 
console.log(car instanceof Car); 

// Outputs: Car object of color "yellow", doors: 6 in a "brand new" state 
console.log(car); 

var movingTruck = carFactory.createVehicle({ 
         vehicleType: "truck", 
         state: "like new", 
         color: "red", 
         wheelSize: "small" }); 

// Test to confirm our truck was created with the vehicleClass/prototype Truck 

// Outputs: true 
console.log(movingTruck instanceof Truck); 

// Outputs: Truck object of color "red", a "like new" state 
// and a "small" wheelSize 
console.log(movingTruck);