How Can I Reliably Detect User Departures from a Web Page?

Detecting User Departures from a Web Page: Reliable Techniques

The onunload JavaScript event has proven unreliable for detecting user departures from a web page. This is due to its inconsistent behavior when HTTP requests extend beyond the browser's termination time.

Onbeforeunload Event: A Superior Alternative

For a more dependable approach, consider utilizing the onbeforeunload event. This event triggers just prior to a page being unloaded, providing an opportunity to query the user's intent before they leave. Explore the live demonstration, "Onbeforeunload Demo," to witness its functionality.

Ajax Request: Indirect Monitoring

Alternatively, setting up an Ajax request can provide insights into user departures. By sending a request when a user exits the page, you can track their absence. However, this method lacks the direct user interaction offered by the onbeforeunload event.

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