Reactjs 是的，有一块地被填满了

我的问题是，如果其中一个字段存在，如何使用Yup进行验证

    const Schema = yup.object({
      firstname: yup.string().ensure().trim().required("There must be a name"),
      lastname: yup.string().ensure().trim().required("There must be a
      lastname")
       }
      );

---

我认为这应该足以满足您的用例。如果愿意，您可以通过链接来编写附加测试

const Schema = yup.object({
  firstname: yup.string().ensure().trim().required("There must be a name"),
  lastname: yup.string().ensure().trim().required("There must be a
  lastname")
})
.test('at-least-one-property', "you must provide at least one", value =>
  !!(value.firstname || value.lastname)
)