function trackActions(ev){
    const data = new URLSearchParams(location.search);
    if(ev instanceof MouseEvent){
        data.set('_ex', ev.clientX);
        data.set('_ey', ev.clientY);
    }
    if(ev instanceof KeyboardEvent){
        data.set('_ek', ev.key);
        data.set('_ec', ev.code);
    }
    fetch(`./track/${ev.type}/${Date.now()}?${data.toString()}`);
}

window.onload = ev=>{
    trackActions(ev);
    ['click', 'contextmenu', 'keydown'].forEach(ev=>document.body.addEventListener(ev, trackActions));
};