Detect when user leaves a site

1. How do you check if the user leaves the page?
2. How to detect page leave in JavaScript?
3. Which event triggers when the user leaves the page?

How do you check if the user leaves the page?

The most reliable way to detect when a user leaves a web page is to use visiblitychange event. This event will fire to even the slightest changes like changing tabs, minimizing the browser, switching from browser to another app on mobile, etc.

How to detect page leave in JavaScript?

A tab or window closing in a browser can be detected by using the beforeunload event. This can be used to alert the user in case some data is unsaved on the page, or the user has mistakenly navigated away from the current page by closing the tab or the browser.

Which event triggers when the user leaves the page?

The beforeunload event is fired when the window, the document and its resources are about to be unloaded. The document is still visible and the event is still cancelable at this point. This event enables a web page to trigger a confirmation dialog asking the user if they really want to leave the page.