(password == re_password) {
        $("#re_password+.invalid-feedback").css("display", "none");
        document.getElementById("submit").disabled = false;
      }
      else {
        $("#re_password+.invalid-feedback").css("display", "block");
        document.getElementById("submit").disabled = true;
      }
    }

    function ajax_post() {
      var username = localStorage.getItem("username");
      console.log($);
      var password = $("#password").val();
      var o_password = $("#o_password").val()