How to send a request to the backend when the user leaves the page?

The article on CSS-Tricks discusses how to send HTTP requests during page exit, providing insights for web developers interested in user behavior analytics. It explains the use of the 'beforeunload' event in JavaScript, which triggers specific code execution before the user leaves the page. This technique allows developers to gather data about the time spent on the site or send information back to the server. An implementation example is provided, offering practical guidance for developers looking to enhance conversion metrics. The advantage of this approach lies in increased user engagement through activity tracking, benefiting the marketing sector. While there are limitations to this technique, the article provides valuable tips that can aid in planning web projects.