Node.js + Express Sessions：如何跟踪上次访问的日期和时间？

Question

I was wondering how one would be able to keep track of a user's last visit on a site with Express? For example:

1.User visits site for the first time, receives a welcome.

2.The next time user visits site, it will display the date and time of their last visit.

I've looked into the Express sessions documentation but I didn't see a solution for dealing with this.

Any insight would be appreciated.

Answer 1

You can use Express sessions combined with the cookies to get this effect.

 var express = require('express'); var cookieParser = require('cookie-parser'); var session = require('express-session'); var app = express(); app.use(cookieParser()); app.use(session({secret: "Shh, its a secret!"})); app.get('/', function(req, res){ if(req.session.page_views){ req.session.page_views++; res.send("You visited this page " + req.session.page_views + " times"); } else { req.session.page_views = 1; res.send("Welcome to this page for the first time!"); } }); app.listen(3000); 

Here is the tutorial.

The best is to understand how the sessions work by exploiting HTTP cookies.