public下新建version.json文件定义版本

{
    "version":"1.1.0"
}   

util下新建updateVersion.js

import axios from 'axios'; 
import { Loading } from 'element-ui';
var t1;
var t2;
export async function isNewVersion() {
    var randomNumber=Math.random() 
    const url = `//${window.location.host}/version.json?id=${randomNumber}`;
    const res = await axios.get(url); 
    const version = res.data.version;
    const localVersion = localStorage.getItem('version');
    if (localVersion && localVersion != version) {
        localStorage.setItem('version', version);
        const hide=()=>{
            //我这里使用的是
            let loadingInstance =Loading.service({ fullscreen: true,text:'版本正在更新渲染加载中...'});
            clearTimeout(t1)
        }
        t1=setTimeout(hide,2000)
        t2=setTimeout(()=>{
            clearTimeout(t2)
            window.location.reload();
        },3000)
    } else {
        localStorage.setItem('version', version);
    }
}

router的afterEach的后置守卫中加版本查询，更新代码

rotuer/index.js

import {isNewVersion} from '@/util/updateVersion.js'
router.afterEach((to,from)=>{
  isNewVersion()
})
export default router