Typescript (Angular 5) 中使用类与接口创建对象与 Java 和 C#

使用类和接口创建对象是 TypeScript (Angular 5) 中非常常见的操作。这种方式与 Java 和 C# 中的对象创建方式有很多共同之处，但也存在一些细微的差异。在本篇文章中，我们将详细讨论在 TypeScript (Angular 5) 中使用类和接口创建对象的方法，并提供一些具体的案例代码。

typescript
class Person {
  name: string;
  age: number;
  constructor(name: string, age: number) {
    this.name = name;
    this.age = age;
  }
  sayHello() {
    console.log(`Hello, my name is ${this.name} and I am ${this.age} years old.`);
  }
}
// 创建一个 Person 对象
let person = new Person("Alice", 25);
person.sayHello();

typescript
interface Animal {
  name: string;
  sound: string;
  eat(food: string): void;
}
// 创建一个实现 Animal 接口的类
class Dog implements Animal {
  name: string;
  sound: string;
  constructor(name: string, sound: string) {
    this.name = name;
    this.sound = sound;
  }
  eat(food: string) {
    console.log(`${this.name} is eating ${food}.`);
  }
}
// 创建一个 Dog 对象
let dog = new Dog("Buddy", "Woof");
dog.eat("bone");

typescript
class Car {
  brand: string;
  model: string;
  constructor(brand: string, model: string) {
    this.brand = brand;
    this.model = model;
  }
  startEngine() {
    console.log(`${this.brand} ${this.model} is starting...`);
  }
}
interface Driver {
  name: string;
  age: number;
  drive(car: Car): void;
}
class Person implements Driver {
  name: string;
  age: number;
  constructor(name: string, age: number) {
    this.name = name;
    this.age = age;
  }
  drive(car: Car) {
    console.log(`${this.name} is driving ${car.brand} ${car.model}.`);
  }
}
let car = new Car("Toyota", "Camry");
let person = new Person("Bob", 30);
person.drive(car);
car.startEngine();