使用vue.js怎么定义全局变量

// The Vue build version to load with the `import` command

// (runtime-only or standalone) has been set in webpack.base.conf with an alias.

import Vue from 'vue'

import App from './App'

import router from './router'

import fastclick from 'fastclick'

import global_ from './components/Global.vue'  //引入全局组件

Vue.prototype.GLOBAL = global_;  //修改原型

Vue.config.productionTip = false

/* eslint-disable no-new */

new Vue({

  el: '#app', 

  router,

  components: { App },

  template: '<App/>'

})