vue加载自定义的js文件方法

export default{
 install(Vue){
  var tpl;
  // 弹出框
  Vue.prototype.showAlter = (title,msg) =>{
   var alterTpl = Vue.extend({  // 1、创建构造器，定义好提示信息的模板
     template: '<div id="bg">'
       + '<div class="jfalter">'
       + '<div class="jfalter-title" id="title">'+ title +'</div>'
       + '<div class="jfalter-msg" id="message">'+ msg +'</div>'
       + '<div class="jfalter-btn" id="sureBtn" v-on:click="hideAlter">确定</div>'
       + '</div></div>'
   });
   tpl = new alterTpl().$mount().$el; // 2、创建实例，挂载到文档以后的地方
   document.body.appendChild(tpl); 
  }
  Vue.mixin({
   methods: {
   hideAlter: function () {
    document.body.removeChild(tpl);
   }
   }
  })
 }
}

import jFAltre from '../../assets/jfAletr.js';
import Vue from 'vue';
Vue.use(jFAltre);

this.showAlter('提示','服务器请求失败');