designer_hhh_com/layouts/shortcodes/random_jump.html

<script>
  const secondsOptions = [3000, 4000, 5000]; // 秒數

  // 隨機選擇一個秒數
  const randomTime = secondsOptions[Math.floor(Math.random() * secondsOptions.length)];

  // 設定跳轉
  setTimeout(() => {
    window.location.href = "https://hhh.com.tw/calculator_request/index.html";
  }, randomTime);
</script>