1. Generally, website statistics are added to the footer, because the footer of each page of the website is basically the same, so it is made of labels.

2. The general principle is that when customers visit, they should look at the js added by your website, because these files are all placed on the server of website statistics. If you want to read them, you have to request them, and the other party can record the IP of the requester and do traffic statistics at the same time, which is somewhat similar to the IP signature map. I don't know if you understand.