React router never gets the correct routing parameters

imitates a string of code written in the official document, but the ${item} variable in the string can never be parsed on the routing parameter. It is always parsed according to the string, so that you can"t get the correct parameters you want. What"s going on? The
code is as follows:

import React from "react"

import { Route, Link } from "react-router-dom"

// import Detail from "./containers/Detail.jsx";
// import Home from "./containers/Home.jsx";
// import List from "./containers/List.jsx";

class RouterMap extends React.Component
{
  render()
  {
    return (      
        <div>
          <Route exact path="/" component={Home}/>
          <Route path="/list" component={List}/>
          <Route path="/detail/:id" component={Detail}/>
        </div>
    )
  }
}

const arr = [1,2,3];
const List = () => (
        <ul>
          {
            arr.map(function(item, index)
            {
              return (
                  <li key={index}>
                    <Link to={"/detail/${item}"}>to detail {item}</Link> {/**/}
                  </li>
                );
            }.bind(this))
          }
        </ul>
  );

const Detail = ({match}) => (
      

Detailurl:{match.params.id}

) const Home = () => ( <div>

Home

<Link to="/list">to List</Link> </div> ) export default RouterMap;
Mar.02,2021

<Link to={`/detail/${item}`}>to detail {item}</Link> {/**/}

backquotation marks of the template string of ES6

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b3309c-2be6b.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3309c-2be6b.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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