摘要：
模块化之后，我在使用js全局变量时遇到了一些困难。
模块化之后，想用js全局变量，遇到点困难。搜索资料后搞定，大概2个步骤：
1、定义一个vue模块，const定义变量，并用export对外暴露.
Globle.vue
<script> // 服务端url const SERVER_BASE_URL = 'http://10.199.xxx.x0:8081/' export default{ SERVER_BASE_URL } </script>
2、在用到全局变量的模块，import后再使用
test.vue
import global_ from 'components/common/Global.vue' console.log(global_.SERVER_BASE_URL)
------------------------------2018/12/27 定义component.js并在main.js中引用----------------------------
1. 定义并暴露
import Vue from 'vue'; let MyComm = new Vue({ methods: { deleteCookie: function (cname) { let d = new Date(); let expires = "expires=" + d.toGMTString(); document.cookie = cname + "=; " + expires; }, getCookie: function (cname) { let name = cname + "="; let ca = document.cookie.split(';'); for (let i = 0; i < ca.length; i++) { let c = ca[i].trim(); if (c.indexOf(name) == 0) return c.substring(name.length, c.length); } return ""; }, setCookie: function (cname, cvalue, exdays) { let d = new Date(); d.setTime(d.getTime() + (exdays * 24 * 60 * 60 * 1000)); let expires = "expires=" + d.toGMTString(); document.cookie = cname + "=" + cvalue + "; " + expires; } } }) export default MyComm;
2. main.js中引用
import MyComm from "./components/common/comm";
const role = MyComm.getCookie('ms_username')