ts 类

创建对象（构造函数  + new）

function cityName (name,age) {
  this.name = name;
  this.age = age;
}
cityName.prototype.about = function () {
  console.log(`name:${this.name}，age：${this.age}`)
}
//创建对象
let cn1 = new cityName(‘城市‘,2020);
console.log(cn1.name)
cn1.about()

let cn2 = new cityName(‘城市‘,2020);
console.log(cn2.name)
cn2.about()
*对象cn1和cn2共享cityName.prototype原型属性

class 创建类

class city{
  //成员变量
  name:string;
  age:number;
  constructor(name:string,age:number){
    this.name = name;
    this.age = age
  }
  //方法
  about(){
    console.log(‘name:‘ + this.name);
    console.log(‘age:‘ + this.age);
  }
}
//创建对象
let ct = new city(‘城市‘,2020);
console.log(ct.name)
ct.about()

ts 类

原文：https://www.cnblogs.com/Li--gm/p/13256076.html