jQuery可以读取/写入浏览器的cookie吗？

<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<script>
  // 读取 cookie
  function readCookie(cookieName) {
    var name = cookieName + "=";
    var decodedCookies = decodeURIComponent(document.cookie);
    var cookies = decodedCookies.split(";");
    for (var i = 0; i< cookies.length; i++) {
      var cookie = cookies[i].trim();
      if (cookie.indexOf(name) === 0) {
        var cookieValue = cookie.substring(name.length, cookie.length);
        return cookieValue;
      }
    }
    return "";
  }

  // 写入 cookie
  function writeCookie(cookieName, cookieValue, daysToExpire) {
    const date = new Date();
    date.setTime(date.getTime() + (daysToExpire * 24 * 60 * 60 * 1000));
    const expires = "expires=" + date.toUTCString();
    document.cookie = cookieName + "=" + cookieValue + "; " + expires + ";path=/";
  }

  // 使用读取 cookie 和写入 cookie
  $(document).ready(function() {
    writeCookie("user_id", "1000", 1); // 期限为一天，在一天之内有效
    var userId = readCookie("user_id");
    console.log("Cookie值为：", userId);
  });
</script>