1-3HTTP请求

一、局部引入axios 请求

import axios from 'axios'
componentDidMount(){
    var url = "https://music.aityp.com/top/playlist?cat=华语"
    axios.get(url).then(res=>{
      this.setState({
        playlists:res.data.playlists
      })
    })
  }

二、axios 挂载到原型上

//axios挂载到原型上
import axios from 'axios';
React.Component.prototype.$http = axios;