for loop - Unique visitor counter for Express.js

Question

I ran into a problem that I cannot do. I will be glad if you help me.

I am writing a website in blog style with node.js. But I couldn't find a way to measure how many people viewed blog posts.

I want a system like this;

When someone enters the site, they will be counted as a visitor and 1 will be added to the counter.

When the same person re-enters the site, this time she will not count as a visitor. Number will not be added to the counter

Answer 1

等待大神答复