fetch 封装

import qs from "qs" export default function ajax(url,params={},type='GET') { // url='http://127.0.0.1:3000'+url; if(type=='GET') { let str=''; Object.keys(params).forEach((item,index)=>{ str+=item+'='+params[item]+'&'; }) if(str) { str=str.substring(0,str.length-1); str='?'+str; } return fetch(url+str).then(data=>data.json()) }else{ return fetch(url,{ method:'POST', headers:{ 'Accept': 'application/json, text/plain, */*', 'Content-Type': 'application/x-www-form-urlencoded' }, body:qs.stringify(params) }).then(data=>data.json()) } }