react router始终获取不到正确路由参数

Question

仿照官方文档写的一串代码，但是就在路由传参上始终没法解析字符串中的${item}变量，总是按照字符串去解析，导致无法得到想要的正确参数，是怎么回事？
代码如下：

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> {/*问题在这*/}
                  </li>
                );
            }.bind(this))
          }
        </ul>
  );

const Detail = ({match}) => (
      <p>Detail，url参数：{match.params.id}</p>
  )

const Home = () => (
        <div>
          <p>Home</p>
          <Link to='/list'>to List</Link>
        </div>
  )

export default RouterMap;

Answer 1

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

ES6的模板字符串的反引号