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reactjs - React Bootstrap 将导航栏的链接更改为活动

问题描述

我使用导航栏作为页面上的组件，它使用路由器来更改内容。到目前为止，一切正常。但我无法弄清楚，当它们被点击时，如何将导航栏中的链接状态设置为活动状态。我想，我必须将 Nav 元素的 activeKey 绑定到活动内容的 location.pathname。

这是我的导航栏组件：

import React from 'react';
import { Navbar, Nav } from 'react-bootstrap';

class Navbar extends React.Component{

    constructor() {
        super();
        this.state = {
          show: false
        };
      }

    render(){
        return(
            <div>
                <Navbar collapseOnSelect expand="lg" bg="dark" variant="dark">
                    <Navbar.Brand >Filmmusic</Navbar.Brand>
                    <Navbar.Toggle aria-controls="responsive-navbar-nav" />
                    <Navbar.Collapse id="responsive-navbar-nav">
                    <Nav activeKey="/" className="mr-auto">
                        <Nav.Link href="/">Home</Nav.Link>
                        <Nav.Link href="/about">About</Nav.Link>
                        <Nav.Link onClick = {()=>{this.handleModal()}}>Contact</Nav.Link>
                    </Nav>
                    <Nav>
                        <Nav.Link href="/impressum">Impressum</Nav.Link>
                        <Nav.Link href="/datenschutzerklaerung">Datenschutzerklärung</Nav.Link>
                    </Nav>
                    </Navbar.Collapse>
                </Navbar>
            </div>
        )
    }
    
}

export default Navbar;

标签： reactjshyperlinknavbar

解决方案

非常感谢！现在一切正常:) 我将导航栏代码写入 index.js，而不是使用组件。我将所有组件放在 Router 元素下方。这是我的 index.js 的最终代码：

import React from 'react';
import ReactDOM from 'react-dom';
import './App.css';
import 'bootstrap/dist/css/bootstrap.min.css';
import { BrowserRouter as Router, Route, Switch} from 'react-router-dom';
import { Home } from './components/Home';
import { About } from './components/About';
import { Contact } from './components/Contact';
import { NoMatch } from './components/NoMatch';
import { Impressum } from './components/Impressum';
import { Datenschutzerklaerung } from './components/Datenschutzerklaerung';
import { Layout } from './components/Layout';
import { Jumbotron } from './components/Jumbotron';
import Footer from './components/Footer';
import './fontawesome';
import { Navbar, Nav } from "react-bootstrap";
import { withRouter } from "react-router";

const Header = props => {
  const { location } = props;
  return (
    <Navbar collapseOnSelect expand="lg" bg="dark" variant="dark">
      <Navbar.Brand >Filmmusic</Navbar.Brand>
      <Navbar.Toggle aria-controls="responsive-navbar-nav" />
      <Navbar.Collapse id="responsive-navbar-nav">
      <Nav activeKey={location.pathname} className="mr-auto">
          <Nav.Link href="/">Home</Nav.Link>
          <Nav.Link href="/about">About</Nav.Link>
          <Nav.Link href="/contact">Contact</Nav.Link>
      </Nav>
      <Nav activeKey={location.pathname}>
          <Nav.Link href="/impressum">Impressum</Nav.Link>
          <Nav.Link href="/datenschutzerklaerung">Datenschutzerklärung</Nav.Link>
      </Nav>
      </Navbar.Collapse>
  </Navbar>
  );
};
const HeaderWithRouter = withRouter(Header);

class MyHeader extends React.Component {

  render() {
    return (
      <React.Fragment>
        <Router>
        <HeaderWithRouter />
        <Jumbotron />
          <Switch>
            <Route exact path="/" component={Home} />
            <Layout>
              <Route path="/about" component={About} />
              <Route path="/contact" component={Contact} />
              <Route path="/impressum" component={Impressum} />
              <Route path="/datenschutzerklaerung" component={Datenschutzerklaerung} />
            </Layout>
            <Route component={NoMatch} />
          </Switch>
        </Router>
        <Footer />
      </React.Fragment>
    );
  }
}

ReactDOM.render(<MyHeader />, document.getElementById('root'));

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