如何在 React.js 中使用 onClick() 事件将道具从一个组件传递到另一个组件

Question

Quick Help Needed! I have Two React components Vendors and VendorsList . In Vendors.js Component i have asset.asset_name text rendered in table format. What I want is, When I click on I asset.asset_name , I wanted to pass it's value from Vendors component to VendorsList component. How could I do this?

Here is code for Two Components

Vendors.js

import React, { useEffect, useState } from "react";
import { axios } from "axios";

const Vendors = () => {
  const [data, setData] = useState({});
  const baseURL =
    "http://127.0.0.1:8000/api/business_process/business-impact/bussiness-assets-detail";

  useEffect(() => {
    axios
      .get(baseURL)
      .then((response) => {
        setData(response.data);
      })
      .then(
        (response) => {},
        (err) => {
          alert("No Data To Show");
        }
      )
      .catch((err) => {
        return false;
      });
  }, []);
  const DisplayData = data.business_assets?.map((asset) => {
    return (
      <tr>
        <td>{asset.business_assets}</td>
        <td onClick={() => alert(asset.asset_name)}>{asset.asset_name}</td>
      </tr>
    );
  });
  return <div></div>;
};

export default Vendors;

Here is VendorsList.js

    import React from "react";
const VendorsList = () => {
  return (
    <div>
      <h1>{foo}</h1>
    </div>
  );
};

export default VendorsList;

I need asset.asset_name value to be passed to VendorsList when I click on asset.asset_name value from Vendors component

Answer 1

I don't think you're passing the asset_name into your VendorsList component at all. I think the quickest way is to directly render the VendorsList in your Vendors component by putting it in the return of your Vendors component. You would also need something to record what you have clicked so you can use another useState for this. Below is how you'd achieve this:

Modify your Vendor.js to look like this:

 import React, { useEffect, useState } from "react"; import { axios } from "axios"; import VendorsList from '<path to your VendorList component>' const Vendors = () => { const [data, setData] = useState({}); const [clickedAsset, setClickedAsset] = useState() const baseURL = "http://127.0.0.1:8000/api/business_process/business-impact/bussiness-assets-detail"; useEffect(() => { axios.get(baseURL).then((response) => { setData(response.data); }).then( (response) => {}, (err) => { alert("No Data To Show"); } ).catch((err) => { return false; }); }, []); const DisplayData = data.business_assets?.map((asset) => { return ( <tr> <td>{asset.business_assets}</td> <td onClick={() => setClickedAsset(asset.asset_name)}>{asset.asset_name}</td> </tr> ); }); return ( <div> <DisplayData/> <VendorList clickedAssetName={clickedAsset}/> </div> ); }; export default Vendors;

Then to use the clickedAssetName that you just passed, access it like this in your VendorsList.js component:

 import React from "react"; const VendorsList = ({clickedAssetName}) => { return ( <div> <h1>{clickedAssetName}</h1> </div> ); }; export default VendorsList;