Function updateProgress

example/tests/gm_download_test.js:319–327

(loaded, total)

    $progressBar.style.width = "0%";
  }
  function updateProgress(loaded, total) {
    if (total > 0) {
      $progressBar.style.width = Math.min(100, Math.round((loaded / total) * 100)) + "%";
    } else {
      // Unknown total — fake an indeterminate bar that creeps up.
      const cur = parseFloat($progressBar.style.width) || 0;
      $progressBar.style.width = Math.min(95, cur + 5) + "%";
    }
  }
  function hideProgress() {
    $progressWrap.style.display = "none";
    $progressBar.style.width = "0%";