Small program npm package--API Promise

1. Disadvantages of callback-based asynchronous API

By default, the asynchronous APIs officially provided by Mini Programs are implemented based on callback functions. For example, the API for network requests needs to be called as follows:

wx.request({method:'',url:'',data:{},success:()=>{},//Callback function for successful requestfail:()=>{},//Callback function for request failurecomplete:()=>{}//Callback function for request completion})

Disadvantages: It is easy to cause the problem of callback hell, and the readability and maintainability of the code are poor!

2. What is API Promise

API Promise refers to upgrading the officially provided asynchronous API based on callback functions, to Promise-based through additional configurationThe asynchronous API, from 3. to improve the readability, maintainability of the code, and avoid the problem of callback hell

3. Realize Promise

In the miniprogram, the realization of API Promise mainly depends on the third-party npm package miniprogram-api-promise.

npm i --save [email protected]

//app.jsimport{ promisifyAll } from 'miniprogram-api-promise'const wxp = wx.p={}promisifyAll(wx,wxp)

4. Call the asynchronous API after Promiseization

//page.jsasync getInfo(){const{data: res }=await wx.p.request({method:'GET',url:'https://www.escook.cn/api/get',data:{name:'zs',age:20}})console.log(res)},//page.wxmlButton

For the non-promise WeChat callback function, please refer to the article: http://t.csdn.cn/yPCxV