有没有人能告诉我如何回到上一页,而不是具体的路线?

当使用此代码时:

var BackButton = React.createClass({

 mixins: [Router.Navigation],
  render: function() {
    return (
        <button
            className="button icon-left"
            onClick={this.navigateBack}>
            Back
        </button>
    );
  },

  navigateBack: function(){
    this.goBack();
  }
});

得到这个错误,goBack()被忽略,因为没有路由器历史

以下是我的路线:

// Routing Components
Route = Router.Route;
RouteHandler = Router.RouteHandler;
DefaultRoute = Router.DefaultRoute;

var routes = (
 <Route name="app" path="/" handler={OurSchoolsApp}>
     <DefaultRoute name="home" handler={HomePage} />
     <Route name="add-school" handler={AddSchoolPage}  />
     <Route name="calendar" handler={CalendarPage}  />
     <Route name="calendar-detail" path="calendar-detail/:id" handler={CalendarDetailPage} />
     <Route name="info-detail" path="info-detail/:id" handler={InfoDetailPage} />
     <Route name="info" handler={InfoPage} />
     <Route name="news" handler={NewsListPage} />
     <Route name="news-detail" path="news-detail/:id" handler={NewsDetailPage} />
     <Route name="contacts" handler={ContactPage} />
     <Route name="contact-detail" handler={ContactDetailPage} />
     <Route name="settings" handler={SettingsPage} />
 </Route>
 );

 Router.run(routes, function(Handler){
   var mountNode = document.getElementById('app');
   React.render(<Handler /> , mountNode);
 });

当前回答

对于react-router v2。这已经改变了。以下是我为ES6所做的:

import React from 'react';
import FontAwesome from 'react-fontawesome';
import { Router, RouterContext, Link, browserHistory } from 'react-router';

export default class Header extends React.Component {

  render() {
    return (
      <div id="header">
        <div className="header-left">
          {
            this.props.hasBackButton &&
            <FontAwesome name="angle-left" className="back-button" onClick={this.context.router.goBack} />
          }
        </div>
        <div>{this.props.title}</div>
      </div>
    )
  }
}

Header.contextTypes = {
  router: React.PropTypes.object
};

Header.defaultProps = {
  hasBackButton: true
};

Header.propTypes = {
  title: React.PropTypes.string
};

其他回答

在react-router v4中。X你可以使用历史。goBack等价于history.go(-1)。

App.js

import React from "react";
import { render } from "react-dom";
import { BrowserRouter as Router, Route, Link } from "react-router-dom";
import Home from "./Home";
import About from "./About";
import Contact from "./Contact";
import Back from "./Back";

const styles = {
  fontFamily: "sans-serif",
  textAlign: "left"
};

const App = () => (
  <div style={styles}>
    <Router>
      <div>
        <ul>
          <li><Link to="/">Home</Link></li>
          <li><Link to="/about">About</Link></li>
          <li><Link to="/contact">Contact</Link></li>
        </ul>

        <hr />

        <Route exact path="/" component={Home} />
        <Route path="/about" component={About} />
        <Route path="/contact" component={Contact} />

        <Back />{/* <----- This is component that will render Back button */}
      </div>
    </Router>
  </div>
);

render(<App />, document.getElementById("root"));

Back.js

import React from "react";
import { withRouter } from "react-router-dom";

const Back = ({ history }) => (
  <button onClick={history.goBack}>Back to previous page</button>
);

export default withRouter(Back);

演示: https://codesandbox.io/s/ywmvp95wpj

请记住,通过使用历史记录,用户可以离开,因为history. goback()可以加载访问者在打开应用程序之前访问过的页面。


为了防止出现如上所述的情况,我创建了一个简单的react-router-last-location库来监视用户的最后位置。

用法非常简单。 首先你需要从npm安装react-router-dom和react-router-last-location。

npm install react-router-dom react-router-last-location --save

然后使用LastLocationProvider如下所示:

App.js

import React from "react";
import { render } from "react-dom";
import { BrowserRouter as Router, Route, Link } from "react-router-dom";
import { LastLocationProvider } from "react-router-last-location";
//              ↑
//              |
//              |
//
//       Import provider
//
import Home from "./Home";
import About from "./About";
import Contact from "./Contact";
import Back from "./Back";

const styles = {
  fontFamily: "sans-serif",
  textAlign: "left"
};

const App = () => (
  <div style={styles}>
    <h5>Click on About to see your last location</h5>
    <Router>
      <LastLocationProvider>{/* <---- Put provider inside <Router> */}
        <div>
          <ul>
            <li><Link to="/">Home</Link></li>
            <li><Link to="/about">About</Link></li>
            <li><Link to="/contact">Contact</Link></li>
          </ul>

          <hr />

          <Route exact path="/" component={Home} />
          <Route path="/about" component={About} />
          <Route path="/contact" component={Contact} />

          <Back />
        </div>
      </LastLocationProvider>
    </Router>
  </div>
);

render(<App />, document.getElementById("root"));

Back.js

import React from "react";
import { Link } from "react-router-dom";
import { withLastLocation } from "react-router-last-location";
//              ↑
//              |
//              |
//
//    `withLastLocation` higher order component
//    will pass `lastLocation` to your component               
//
//                   |
//                   |
//                   ↓
const Back = ({ lastLocation }) => (
  lastLocation && <Link to={lastLocation || '/'}>Back to previous page</Link>
);


//          Remember to wrap
//   your component before exporting
//
//                   |
//                   |
//                   ↓
export default withLastLocation(Back);

演示:https://codesandbox.io/s/727nqm99jj

我认为你只需要在路由器上启用BrowserHistory,初始化如下:< router history={new BrowserHistory}>。

在此之前,你应该从'react-router/lib/BrowserHistory'中获取BrowserHistory

下面是一个使用ES6的例子

const BrowserHistory = require('react-router/lib/BrowserHistory').default;

const App = React.createClass({
    render: () => {
        return (
            <div><button onClick={BrowserHistory.goBack}>Go Back</button></div>
        );
    }
});

React.render((
    <Router history={BrowserHistory}>
        <Route path="/" component={App} />
    </Router>
), document.body);

React路由器使用HTML5 History API,它建立在浏览器历史API的基础上,提供了一个我们可以在React应用程序中轻松使用的接口。历史API。所以不需要导入任何东西(useHistory等)

对于功能组件:

<button onClick={()=>{ window.history.back() }}> Back </button>

对于类组件:

<button onClick={()=>{ this.window.history.back() }}> Back </button>

这适用于浏览器和哈希历史。

this.props.history.goBack();

更新React v16和ReactRouter v4.2.0(2017年10月):

class BackButton extends Component {
  static contextTypes = {
    router: () => true, // replace with PropTypes.object if you use them
  }

  render() {
    return (
      <button
        className="button icon-left"
        onClick={this.context.router.history.goBack}>
          Back
      </button>
    )
  }
}

更新React v15和ReactRouter v3.0.0(2016年8月):

var browserHistory = ReactRouter.browserHistory;

var BackButton = React.createClass({
  render: function() {
    return (
      <button
        className="button icon-left"
        onClick={browserHistory.goBack}>
        Back
      </button>
    );
  }
});

创建了一个稍微复杂一点的嵌入iframe的例子:https://jsfiddle.net/kwg1da3a/

React v14和ReacRouter v1.0.0(2015年9月10日)

你可以这样做:

var React = require("react");
var Router = require("react-router");

var SomePage = React.createClass({
  ...

  contextTypes: {
    router: React.PropTypes.func
  },
  ...

  handleClose: function () {
    if (Router.History.length > 1) {
      // this will take you back if there is history
      Router.History.back();
    } else {
      // this will take you to the parent route if there is no history,
      // but unfortunately also add it as a new route
      var currentRoutes = this.context.router.getCurrentRoutes();
      var routeName = currentRoutes[currentRoutes.length - 2].name;
      this.context.router.transitionTo(routeName);
    }
  },
  ...

你需要小心,你有必要的历史回溯。如果你直接点击页面,然后再点击返回,它会带你回到应用之前的浏览器历史。

这个解决方案可以兼顾这两种情况。但是,它不会处理可以在页面中导航(并添加到浏览器历史记录中)的iframe(使用后退按钮)。坦白地说,我认为这是反应路由器的一个bug。问题创建在这里:https://github.com/rackt/react-router/issues/1874