function countStart() {
    const $counters = document.querySelectorAll(".js-count-up"),
        options = {
            useEasing: true,
            useGrouping: true,
            separator: ",",
            decimal: "."
        };

    $counters.forEach((item) => {
        const value = item.dataset.value;
        const counter = new CountUp(item, value, options);
        counter.start();
    });
}

new Waypoint({
    element: document.querySelector('.level'),
    handler: function () {
        countStart()
    },
    offset: '50%'
});