import React,{useState}from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import Home from './1';
import {BrowserRouter} from "react-router-dom"
import reportWebVitals from './reportWebVitals';
function App(props) {
let [val,setVal] = useState(0)
  return (
    <div className="App">
        <div>
          当前次数:{val}
          <button onClick={()=>{setVal(val+1)}}>点此计数</button>
        </div>
    </div>
  );
}
ReactDOM.render(<App />,document.getElementById("root"));