我真的不知道如何使用正则表达式等来约束参数。
如何区分这两条路线呢？
<Router>
<Route path="/:alpha_index" component={Child1} />
<Route path="/:numeric_index" component={Child2} />
</Router>
并阻止“/123”触发第一条路线？
React-router v4 现在允许您使用正则表达式来匹配参数 --https://reacttraining.com/react-router/web/api/Route/path-string https://reacttraining.com/react-router/web/api/Route/path-string
const NumberRoute = () => <div>Number Route</div>;
const StringRoute = () => <div>String Route</div>;
<Router>
<Switch>
<Route exact path="/foo/:id(\\d+)" component={NumberRoute}/>
<Route exact path="/foo/:path(\\w+)" component={StringRoute}/>
</Switch>
</Router>
更多信息：https://github.com/pillarjs/path-to-regexp/tree/v1.7.0#custom-match-parameters https://github.com/pillarjs/path-to-regexp/tree/v1.7.0#custom-match-parameters
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