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);
});
看看我使用React 16.0和React-router v4的工作示例。查看代码Github
使用withRouter和history.goBack()
这就是我正在实现的想法……
History.js
import React, { Component } from 'react';
import { withRouter } from 'react-router-dom'
import './App.css'
class History extends Component {
handleBack = () => {
this.props.history.goBack()
}
handleForward = () => {
console.log(this.props.history)
this.props.history.go(+1)
}
render() {
return <div className="container">
<div className="row d-flex justify-content-between">
<span onClick={this.handleBack} className="d-flex justify-content-start button">
<i className="fas fa-arrow-alt-circle-left fa-5x"></i>
</span>
<span onClick={this.handleForward} className="d-flex justify-content-end button">
<i className="fas fa-arrow-alt-circle-right fa-5x"></i>
</span>
</div>
</div>
}
}
export default withRouter(History)
PageOne.js
import React, { Fragment, Component } from 'react'
class PageOne extends Component {
componentDidMount(){
if(this.props.location.state && this.props.location.state.from != '/pageone')
this.props.history.push({
pathname: '/pageone',
state: {
from: this.props.location.pathname
}
});
}
render() {
return (
<Fragment>
<div className="container-fluid">
<div className="row d-flex justify-content-center">
<h2>Page One</h2>
</div>
</div>
</Fragment>
)
}
}
export default PageOne
另外,抱歉代码太大,不能全部贴在这里
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
在react-router v6中,当你想返回到前一页时,你可以使用useNavigate:
步骤1:
import { useNavigate } from "react-router-dom";
步骤2:
const navigate = useNavigate();
第三步:如果你想回到前一页,使用navigate(-1):
<button onClick={() => navigate(-1)}> Back </button>
这是一个工作的BackButton组件(React 0.14):
var React = require('react');
var Router = require('react-router');
var History = Router.History;
var BackButton = React.createClass({
mixins: [ History ],
render: function() {
return (
<button className="back" onClick={this.history.goBack}>{this.props.children}</button>
);
}
});
module.exports = BackButton;
如果没有历史记录,你当然可以这样做:
<button className="back" onClick={goBack}>{this.props.children}</button>
function goBack(e) {
if (/* no history */) {
e.preventDefault();
} else {
this.history.goBack();
}
}