<p><pre class="brush:php;toolbar:false;">import React, { useState, useEffect } daripada "react"; import axios daripada "axios"; import io daripada "socket.io-client"; import { DataGrid } daripada "@mui/x-data-grid"; import NaveBar daripada "../NaveBar/NaveBar"; import SideBar dari "../SideBar/SideBar"; import "./NewsTable.scss"; soket const = io("http://localhost:5000/"); const NewsTablee = () => { const [berita, setNews] = useState([]); //kemas kini berita deeebd useEffect(() => { const fetchData = async () => { cuba { const allnews = tunggu axios.get("http://localhost:5000/api/news"); setNews(allnews.data.Date); } tangkap (ralat) { console.log(error); } }; socket.on("kemas kiniNewsTable", () => { fetchData(); }); }, [berita]); useEffect(() => { aksios .get("http://localhost:5000/api/news") .then(s) => { setNews(s.data.Date); }) .catch((er) => { console.log(er); }); }, []); mesej const = () => { socket.emit("berita dikemas kini", "berita dikemas kini"); }; lajur const = [ { medan: "_id", nama tajuk: "tidak", lentur: 0.5, renderCell: (params) => { console.log(params.row.Index + 1); // tambah baris ini kembalikan <div>{(params.row.index + 1).toString()}</div> ; }, }, { medan: "Tajuk", nama tajuk: "Tajuk", lentur: 3, boleh diisih: benar }, { medan: "createdAt", headerName: "createdAt", flex: 2 }, { medan: "Nama Pengguna", nama kepala: "Nama Pengguna", flex: 1 }, { medan: "Resurce", headerName: "Resurce", flex: 1 }, { medan: "Bahasa", headerName: "Bahasa", flex: 1 }, { medan: "Tahap Perlindungan", nama tajuk: "Tahap Perlindungan", lentur: 1 }, { medan: "keutamaan", nama tajuk: "Keutamaan", lentur: 1 }, { medan: "Media", headerName: "Media", flex: 1 }, ]; kembali ( <> <NaveBar /> <Bar Sisi /> <div className='content-wrapper' style={{ minHeight: "1172.56px" }}> <div className='NewsTableContainer'> <div className='headrt'> <butang onClick={message} style={{ tinggi: 30, lebar: 30 }}></button> </div> <gaya div={{ tinggi: "570px", lebar: "100%" }} className='newsTable'> <Grid Data rows={berita} lajur={columns} getRowId={(baris) => row._id} sortModel={[{ field: "createdAt", sort: "desc" }]} /> </div> </div> </div> </> ); };</pre> <p>导出默认NewsTablee;}</p> <p>返回行号为nan</p>

{
      field: "_id",
      headerName: "no",
      flex: 0.5,
      type: 'number', valueGetter: (params) =>  `${params.row.index + 1}`
    },