Scroll to webpage bottom

gistfile1.txt

/**
 * scroll to bottom
 * @param {*} page
 */
(async () => {
    await new Promise((resolve, reject) => {
      var totalHeight = 0;
      var distance = 400;
      var timer = setInterval(() => {
        var scrollHeight = document.body.scrollHeight;
        window.scrollBy(0, distance);
        totalHeight += distance;

        if (totalHeight >= scrollHeight) {
          clearInterval(timer);
          resolve();
        }
      }, 1000);
    });
})();