保存更新时转换为 ISOString

我正在更新我的文本字段上的日期。当我更新日期字段时，它变成了这个

但是我想在更新时实现这一目标。出生日期字段将是这样，只有日期会更新。

这是我的代码

const [userData, setUserData] = useState({
name: "",
phone: "",
address: "",
birthdate: new Date().toISOString(),
gender: "",
messenger: "",
_id: "",


})

  const [isRedirected, setIsRedirected] = useState(false)

  const { _id, name, phone, address, birthdate, gender, messenger } = userData

  useEffect(() => {
    const user = getUser()
    getUserById("/user/" + user.userId, user.token).then((data) => {
      setUserData(data)
    })
  }, [])

  const handleChange = (name) => (e) => {
    setUserData({ ...userData, [name]: e.target.value })
  }

  //   let test = new Date(birthdate).toISOString()
  //   console.log(test)

  const clickSubmit = (e) => {
    const users = getUser()
    e.preventDefault()

    updateUser(_id, users.token, userData).then((data) => {
      if (data) {
        Swal({
          text: "Your information has been updated",
          icon: SparkWaving,
        }).then(() => {
          setIsRedirected(true)
        })
      } else {
        Swal({
          title: "User updated failed.",
          text: "The server encountered an error.",
          icon: "error",
        })
      }
    })
  }

我的代码中是否缺少任何内容？