小编Cou*_*age的帖子

我正在用 React 构建一个网站。目前，我已经创建了渲染元素的函数，并对我在 Node.js 中创建的 API 进行 PUT fetch 调用。它是这样的：

import React, { useState, useEffect } from "react";
import { useHistory } from "react-router-dom";
import Alert from "../elements/Alert";
import Axios from "axios";

export default function UpdateCourse() {
  const id = window.location.href.split("?")[1];
  console.log(id);

  const [dishName, setdishName] = useState("");
  const [category, setcategory] = useState("");
  const [author, setauthor] = useState("");
  const [ingredients, setingredients] = useState([]);
  const [cookingTime, setcookingTime] = useState("");
  const [sourceUrl, setsourceUrl] = useState("");
  const [imageUrl, setimageUrl] = useState("");
  const [isPublished, setisPublished] …