Day27 Router useParams 小实作

在 URL 中设置动态参数传递给指定参数组件。

在App.js 的Route path="/cards/:title"，指定参数，并将data[]阵列物件放在App.js中，利用(props)传递数据至AllCard.js，在AllCard.js中用filter()筛选同样的参数页面加以显示。
data.filter(card => card.title === title)

App.js

import React from 'react';
import { BrowserRouter as Router,Route } from 'react-router-dom';
import "./App.css";
import User from "./User";
import AllCard from "./AllCard";

const App = () => {
   const data = [
    {
     title : "Tokyo",
     image:"image/tokyo01.jpg",
     description:"This is Tokyo Page"
    },
    {
      title : "Osaka",
      image:"image/osaka.jpg",
      description:"This is Osaka Page"
     },
     {
      title : "Fukuoka",
      image:"image/fukuka.jpg",
      description:"This is Fukuoka Page"      
     },
     {
      title : "Kyoto",
      image:"image/kyoto.jpg",
      description:"This is Kyoto Page"
     },
     {
      title : "Kobe",
      image:"image/kobe.jpg",
      description:"This is Kobe Page"
     },
     {
      title : "Hokkaido",
      image:"image/hokkaido.jpg",
      description:"This is Hokkaido Page"
     },
   ];

  return (
    <Router>
       <Route exact path="/">
         <User data={data} />
       </Route>
       <Route path="/cards/:title">
         <AllCard data={data} />
       </Route>
    </Router>
  )
}

export default App

AllCard.js

import React from 'react';
import { useParams } from 'react-router-dom';

const AllCard = ({data}) => {

    const {title} = useParams();

    return (
        <>
           <section className="all">
             <div className="container">
               {data.filter(card => card.title === title).map((card,index) =>(
                  <div key={index} className="allcard">
                   <h1>{card.title}</h1>                   
                   
                   <p>{card.description}</p>
                  </div>

               ))}
             </div>
           </section> 
        </>
    )
}

export default AllCard

User.js

import React from 'react';
import Card from "./Card";

const User = ({data}) => {
    return (
       
        <section className="user">
        <div className ="container">
         <Card data={data} />
        </div>         
        </section> 
        
    )
}

export default User;

Card.js

import React from 'react';
import { Link } from 'react-router-dom';

const Card = ({data}) => {
    return (
      <>
        {data.map((card,index)=>(
            <div key={index} className="card">
            <h1>{card.title}</h1>
            <img src={card.image} />
            {/*<p>{card.description}</p>*/}
            <Link to={`/cards/${card.title}`}>View More</Link>
           </div>
        ))}

      </>
    );
};

export default Card;