window.updateLoop = [];

(() => {
    let updLoop = setInterval(() => {
        updateLoop.forEach(f => f());
    }, 30000);

    let everythingLoaded = setInterval(function() {
        if (/loaded|complete/.test(document.readyState)) {
            clearInterval(everythingLoaded);
            updateLoop.forEach(f => f());
        }
    }, 10);
})();