判断页面是否登陆

router.beforeEach((to, from, next) => {
 if (to.matched.some(record => record.meta.requireAuth)){ // 判断该路由是否需要登录权限
 if (token) { // 判断当前的token是否存在
 next();
 }
 else {
 next({
 path: '/login',
 query: {redirect: to.fullPath} // 将跳转的路由path作为参数，登录成功后跳转到该路由
 })
 }
 }
 else {
 next();
 }
});

{
 path: '/index',
 meta: {
 title: '',
 requireAuth: true, // 添加该字段，表示进入这个路由是需要登录的
 },
}

if(this.$route.query.redirect){
// let redirect = decodeURIComponent(this.$route.query.redirect);
 let redirect = this.$route.query.redirect;
 this.$router.push(redirect);
}else{
 this.$router.push('/');
 }