Why doesn't unload work?

Question

JavaScript

I'm trying to close the session before exiting the tab with this code

window.unload = function() {
    let xhr = new XMLHttpRequest();
    xhr.open('GET', '/user/sessionDestroy');
    xhr.send();
    };

node.js in router /user/

router.get('/sessionDestroy', (req, res) => {
    console.log(1);
    req.session.destroy();
    res.status(200).send('ok');
})

The code does not work at all, although if you go to the localhost:3000/user/sessionDestroy site, the session is deleted.
Those. back is not receiving a signal at all

Answer 1

window.onunload - maybe so?

Answer 2

/sessionDestroy !== /user/sessionDestroy