javascript - 不能做 isActive 检查

Question

我有路线

<Route path="/catalog/:category" component={CatalogList} />

例如，当我在页面/catalog/10 时，我会尝试检查该路由是否处于事件状态

this.context.router.isActive('/catalog/:category')

但我总是出错。如何检查？

例子:

const Test = React.createClass({
    contextTypes: {
        router: React.PropTypes.object.isRequired
    },

    render() {
        console.log(this.props.location.pathname);  // /catalog/12
        console.log(this.context.router.isActive('/catalog/:category'));    // false (need true)
        console.log(this.context.router.isActive('/catalog/12'));   //true
        return <Link to="/catalog/12">Lets test</Link>;
    }
});

render((
    <div>
        <Router history={browserHistory}>
            <Route path="/catalog/:category" component={Test} />
            <Route path="/" component={Test} />
        </Router>
    </div>
), document.getElementById('app'));

Answer 1

如前所述in the docs

A route is only considered active if all the URL parameters match, including optional parameters and their presence or absence.

这意味着 URL 参数必须匹配。这就是为什么在你的例子中:

this.context.router.isActive('/catalog/:category'); // false
this.context.router.isActive('/catalog/12');        // true

您可以在 location.pathname 上使用正则表达式

this.props.location.pathname.match(/^\/catalog\/\d+\/?$/);