pirsch
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Published
20 hours ago •
pirsch-analytics
pirsch-analytics
Track visitors leaving a website
Useful to calculate the time on the page more precisely.
https://css-tricks.com/send-an-http-request-on-page-exit/
Demo
static/
page.html
index.html
main.go
package main
import (
"io"
"log"
"net/http"
)
func main() {
http.HandleFunc("/hit", func(w http.ResponseWriter, r *http.Request) {
body, err := io.ReadAll(r.Body)
if err != nil {
log.Printf("Error reading body: %v", err)
}
log.Println(string(body))
})
http.Handle("/", http.FileServer(http.Dir("static")))
http.ListenAndServe(":8080", nil)
}
index.html
<!DOCTYPE html>
<html>
<head>
<title>Home</title>
</head>
<body>
<a href="/page.html">Page</a>
<script type="text/javascript">
document.addEventListener("visibilitychange", () => {
if(document.visibilityState === "hidden") {
navigator.sendBeacon("/hit", JSON.stringify({
page: "home"
}));
}
});
</script>
</body>
</html>
page.html
<!DOCTYPE html>
<html>
<head>
<title>Page</title>
</head>
<body>
<a href="/">Home</a>
<script type="text/javascript">
document.addEventListener("visibilitychange", () => {
if(document.visibilityState === "hidden") {
navigator.sendBeacon("/hit", JSON.stringify({
page: "page"
}));
}
});
</script>
</body>
</html>
This interferes with sessions and might artificially increase the time on the website, as tabs are often never closed or after a very long time.