Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
1.0k views
in Technique[技术] by (71.8m points)

reactjs - React: Hide a Component on a specific Route

New to React:

I have a <Header /> Component that I want to hide only when the user visit a specific page.

The way I designed my app so far is that the <Header /> Component is not re-rendered when navigating, only the page content is, so it gives a really smooth experience.

I tried to re-render the header for every route, that would make it easy to hide, but I get that ugly re-rendering glitch each time I navigate.

So basically, is there a way to re-render a component only when going in and out of a specific route ?

If not, what would be the best practice to achieve this goal ?

App.js:

class App extends Component {

  render() {
    return (
      <BrowserRouter>
        <div className="App">
          <Frame>
            <Canvas />
            <Header />
            <Main />
            <NavBar />
          </Frame>
        </div>
      </BrowserRouter>
    );
  }
}

Main.js:

const Main = () => (
  <Switch>
    <Route exact activeClassName="active" path="/" component={Home} />
    <Route exact activeClassName="active" path="/art" component={Art} />
    <Route exact activeClassName="active" path="/about" component={About} />
    <Route exact activeClassName="active" path="/contact" component={Contact} />
  </Switch>
);
See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

I'm new to React too, but came across this problem. A react-router based alternative to the accepted answer would be to use withRouter, which wraps the component you want to hide and provides it with location prop (amongst others).

import { withRouter } from 'react-router-dom';    
const ComponentToHide = (props) => {
  const { location } = props;
  if (location.pathname.match(/routeOnWhichToHideIt/)){
    return null;
  }

  return (
    <ComponentToHideContent/>
  )
}

const ComponentThatHides = withRouter(ComponentToHide);

Note though this caveat from the docs:

withRouter does not subscribe to location changes like React Redux’s connect does for state changes. Instead, re-renders after location changes propagate out from the component. This means that withRouter does not re-render on route transitions unless its parent component re-renders.

This caveat not withstanding, this approach seems to work for me for a very similar use case to the OP's.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...