reactjs - 如何在反应组件的地图方法中添加复选框或单选按钮？

问题描述

如何在 map 方法中添加复选框或单选按钮。我创建了问答应用程序。我需要为答案添加复选框或单选按钮。卡片组件的下方是打印出问题和答案的地方。我如何在其中添加单选按钮，以便用户可以检查答案。

 import React, { useState, useEffect } from "react";
    import { Fragment } from "react";
    import "./Survey.css";
    import CreateSurvey from "../modals/CreateSurvey";
    import Card from "../card/Card";
    
    const Survey = () => {
      const [modal, setModal] = useState(false);
      const [surveyList, setSurveyList] = useState([]);
    
      useEffect(() => {
        let arr = localStorage.getItem("surveyList");
        if (arr) {
          let obj = JSON.parse(arr);
          setSurveyList(obj);
        }
      }, []);
    
      const deleteSurvey = (index) => {
        let tempList = surveyList;
        tempList.splice(index, 1);
        localStorage.setItem("surveyList", JSON.stringify(tempList));
        setSurveyList(tempList);
        window.location.reload();
      };
    
      const toggle = () => {
        setModal(!modal);
      };
    
      const updateListArray = (obj, index) => {
        let tempList = surveyList;
        tempList[index] = obj;
        localStorage.setItem("surveyList", JSON.stringify(tempList));
        setSurveyList(tempList);
        window.location.reload();
      };
    
      const saveSurvey = (surveyObj) => {
        let tempList = surveyList;
        tempList.push(surveyObj);
        localStorage.setItem("surveyList", JSON.stringify(tempList));
        setSurveyList(surveyList);
        setModal(false);
      };
      return (
        <Fragment>
          <div className="header text-center">
            <h5>Survey</h5>
            <button className="btn btn-primary" onClick={() => setModal(true)}>
              Create Survey
            </button>
          </div>
          <div className="survey-container">
            {surveyList &&
              surveyList.map((obj, index) => (
                <Card
                  surveyObj={obj}
                  index={index}
                  deleteSurvey={deleteSurvey}
                  updateListArray={updateListArray}
                />
                 
               
              ))}
          </div>
          <CreateSurvey toggle={toggle} modal={modal} save={saveSurvey} />
        </Fragment>
      );
    };
    
    export default Survey;

//卡片.js

import React, { useState } from "react";
import "./Card.css";

const Card = ({ surveyObj, deleteSurvey, index }) => {
  const [modal, setModal] = useState(false);

  const toggle = () => {
    setModal(!modal);
  };

  const deleteHandler = () => {
    deleteSurvey(index);
  };

  return (
    <div>
      <div className="card-wrapper mr-5">
        <div className="card-top"></div>
        <div className="survey-holder">
          <span className="card-header">{surveyObj.name}</span>
          <p className="answer"> {surveyObj.answerOne}</p>
          <div className="icons">
            <i className="far fa-edit edit"></i>
            <i className="fas fa-trash-alt delete" onClick={deleteHandler}></i>
          </div>
        </div>
      </div>
    </div>
  );
};

export default Card;

//创建survey.js

import React, { useState } from "react";
import { Button, Modal, ModalHeader, ModalBody, ModalFooter } from "reactstrap";
import { Fragment } from "react";

const CreateSurvey = ({ modal, toggle, save }) => {
  const [question, setQuestion] = useState("");
  const [answerOne, setAnswerOne] = useState("");
  const [answerTwo, setAnswerTwo] = useState("");
  const [answerThree, setAnswerThree] = useState("");
  const [answerFour, setAnswerFour] = useState("");

  const changeHandler = (e) => {
    const { name, value } = e.target;

    if (name === "question") {
      setQuestion(value);
    } else {
      setAnswerOne(value);
    }
  };

  const saveHandler = (e) => {
    e.preventDefault();
    let surveyObj = {};
    surveyObj["name"] = question;
    surveyObj["answerOne"] = answerOne;
    surveyObj["answerTwo"] = answerTwo;
    surveyObj["answerThree"] = answerThree;
    surveyObj["answerFour"] = answerFour;
    save(surveyObj);
  };
  return (
    <Fragment>
      <Modal isOpen={modal} toggle={toggle}>
        <ModalHeader toggle={toggle}>Create a Survey Question</ModalHeader>
        <ModalBody>
          <form>
            <div>
              <div className="form-group">
                <label>Survey Questions</label>
                <input
                  type="text"
                  className="form-control"
                  value={question}
                  name="question"
                  onChange={changeHandler}
                />
              </div>
            </div>
            <div className="mt-2">
              <label>Survey Answers</label>
              <div className="form-group">
                <label>Answer 1</label>
                <input
                  type="text"
                  className="form-control mt-2 mb-2"
                  value={answerOne}
                  name="answerOne"
                  onChange={changeHandler}
                />
              </div>
              <div className="form-group">
                <label>Answer 2</label>
                <input
                  type="text"
                  className="form-control mt-2 mb-2"
                  value={answerTwo}
                  name="answerTwo"
                  onChange={changeHandler}
                />
              </div>
              <div className="form-group">
                <label>Answer 3</label>
                <input
                  type="text"
                  className="form-control mt-2 mb-2"
                  value={answerThree}
                  name="answerThree"
                  onChange={changeHandler}
                />
              </div>
              <div className="form-group">
                <label>Answer 4</label>
                <input
                  type="text"
                  className="form-control mt-2 mb-2"
                  value={answerFour}
                  name="answerFour"
                  onChange={changeHandler}
                />
              </div>
            </div>
          </form>
        </ModalBody>
        <ModalFooter>
          <Button color="primary" onClick={saveHandler}>
            Create
          </Button>
          <Button color="secondary" onClick={toggle}>
            Cancel
          </Button>
        </ModalFooter>
      </Modal>
    </Fragment>
  );
};

export default CreateSurvey;

标签： reactjsreact-hooks

reactjs - 如何在反应组件的地图方法中添加复选框或单选按钮？

问题描述

解决方案

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