Axios 访问 Vue.js 组件的实例

demo.js

import Vue from 'vue'
import App from './App'
import axios from 'axios'

const plugins = {
  install(Vue) {
    Vue.prototype.$fetch = function(url, options) {
      return axios(url, options)
        .then(response => {
          console.log(this)
        })
        .catch(error => {
          console.log(this)
        })
    }
  }
}

Vue.use(plugins);

new Vue({
  el: '#app',
  render: (h) => h(App)
})