【TS】type和interface的区别

type能为基本类型起别名

type aliaName = string;

type能实现联合类型

interface Dog{
      wang();
}
interface Cat{
      miao();
}

type Pet = Dog | Cat;

type实现元组类型

type PetList = [Dog, Cat];

interface可以进行合并

interface Animal{      
      name: string;
      age: number;
}
interface Animal{
      sayHi: () => void;
}
// 最后的Animal接口为二者的结合
interface Animal{
      name: string;
      age: number;
      sayHi: () => void;
}