<p>Saya menggunakan Formik untuk mencipta borang dalam React dan juga menggunakan komponen MUI.Masalahnya ialah saya mendapat ralat berikut: </p> <pre class="brush:php;toolbar:false;">date.isBefore bukan fungsi TypeError: date.isBefore bukan fungsi di DayjsUtils.isBeforeDay (http://localhost:3000/static/js/bundle.js:2319:19) pada validateDate (http://localhost:3000/main.aa62b4b6c891ec5ff2b0.hot-update.js:10596:43) di useValidation (http://localhost:3000/main.aa62b4b6c891ec5ff2b0.hot-update.js:10654:27) di usePickerValue (http://localhost:3000/main.aa62b4b6c891ec5ff2b0.hot-update.js:10019:75) di usePicker (http://localhost:3000/main.aa62b4b6c891ec5ff2b0.hot-update.js:9876:94) di useDesktopPicker (http://localhost:3000/main.aa62b4b6c891ec5ff2b0.hot-update.js:7848:60) di DesktopDatePicker (http://localhost:3000/main.aa62b4b6c891ec5ff2b0.hot-update.js:3956:90) di renderWithHooks (http://localhost:3000/static/js/bundle.js:103306:22) di updateForwardRef (http://localhost:3000/static/js/bundle.js:105877:24) di beginWork (http://localhost:3000/static/js/bundle.js:107924:20)</pre> <p>Ini kod saya: </p> <pre class="brush:php;toolbar:false;"><Formik onSubmit={handleFormSubmit} initialValues={initialValuesProject} validationSchema={projectSchema} > {({ values, handleChange, handleSubmit, setFieldValue }) => <borang onSubmit={handleSubmit}> <Lebar kotak="50%"> <LocalizationProvider dateAdapter={AdapterDayjs}> <Pemilih Tarikh id="project_start" name="project_start" value={values.project_start} slotProps={{ medan teks: { saiz: "kecil", jidar: "padat", }, }} /> <Pemilih Tarikh id="project_end" name="projek_tamat" value={values.project_end} slotProps={{ textField: { saiz: "kecil", jidar: "padat" }} /> </Penyedia Penyetempatan> </Kotak> </form> )}</Formik></pre> <p>Ini ialah mod dan nilai awal: </p> <pre class="brush:php;toolbar:false;">const projectSchema = yup.object().shape({ project_start: yup.date(), project_end: yup.date(), nama_projek: yup.string().diperlukan("diperlukan"), usersId: yup.string(), partnerId: yup.string(), categoryId: yup.string(), }); const initialValuesProject = { project_start: Date.now(), project_end: Date.now(), nama_projek: "", UserId: "", partnerId: "", categoryId: "", };</pre> <p>Ribuan terima kasih kepada sesiapa yang boleh membantu saya <3</p> <p>Dapat membuat pemilih tarikh berfungsi</p>

project_start: Date.now(),
project_end: Date.now(),

import dayjs, { Dayjs } from 'dayjs';

const initialValuesProject = {
  project_start: dayjs(Date.now()),
  project_end: dayjs(Date.now()),
  project_name: "",
  usersId: "",
  partnerId: "",
  categoryId: "",
};