泛型的使用是如果 一个res接口数组结构,然后还有一个datas接口数组结构
res ={
code: number msg: string data: { }}
res ={
code: number msg: string data: { }}
他们的第一层对象都是相同的,但第对象里的data数据 是不同的,这时候就可以使用泛型
有两个方法一个是type 一个是interface
type :
type RequestData<T,U>={ url: string method?: 'GET' | 'POST' | 'PUT' | 'DELETE' data?: T params?: U } type dataTypes = { username: string paswword: string } type paramsType = { bookname: string price: number } let req1: RequestData<dataTypes, paramsType> = { url: "/login", data: { username: '她', paswword: '他' }, params: { bookname: '浮生三世', price: 200, } }
interface:
interface resType<T> { code: number msg: string data: T } interface UserType { name: 'zs'; age: number } interface GoodType { id: number price: number pic: string name: string } let userData: resType<UserType> = { code: 200, msg: 'success', data: { name: 'zs', age: 20 } } let goodData: resType<GoodType> = { code: 200, msg: 'success', data: { id: 1, price: 200, pic: 'xxx', name: "好好" } }
标签:code,string,对象,type,number,interface,泛型,data From: https://www.cnblogs.com/whenwei123/p/18257251