javascript - How to restrict the same browser from logging in to two accounts

Question

After user A logs in, user B opens another login page. At this time, A will get B's token. The data is messed up (I stored the token in localstorage)! How to deal with it?

Answer 1

Just make a distinction when storing tokens in localstorage

Answer 2

登录页, 第一件事情就是*判断是否有token/cookie等*, 
已经登录(token没过期)的用户, *直接跳转到index页*.
一个浏览器当前只能登陆一个账号.

Answer 3

When a logged-in user opens the login page, he should be redirected to the user's personal homepage

Answer 4

Reset storage when logging in