1.在项目根目录下安装

cnpm install --save js-base64
cnpm install --save js-md5

2.在项目文件中引入

import md5 from 'js-md5';

let Base64 = require('js-base64').Base64;

3.在项目文件中使用

base64:

Base64.encode('dankogai');  // ZGFua29nYWk=

Base64.decode('ZGFua29nYWk=');  // dankogai

md5:

md5(''); // d41d8cd98f00b204e9800998ecf8427e

eg:

<script type="text/ecmascript-6">

 let Base64 = require('js-base64').Base64;       //Base64.encode('小飼弾');Base64.decode('ZGFua29nYWk=');

export default {
        data () {

            return {},

          },

         methods: {

             openFun: function(){

                      let urlStr = "token=11526538-0059-4199-b35b-4e77263cdda9&pageId=31&unionId=165";
                      urlStr = Base64.encode(urlStr);

              }

          }

}

</script>