2021年(React 16) -基于@Atombit的评论

下方卷轴向上，还保留了历史卷轴位置。

function ScrollToTop() {
  const history = useHistory()
  useEffect(() => {
    const unlisten = history.listen((location, action) => {
      if (action !== 'POP') {
        window.scrollTo(0, 0)
      }
    })
    return () => unlisten()
  }, [])
  return (null)
}

用法:

<Router>
  <ScrollToTop />
  <Switch>
    <Route path="/" exact component={Home} />
  </Switch>
</Router>

我想把我的解决方案分享给那些正在使用react-router-dom v5的人，因为这些v4解决方案中没有一个对我有用。

解决我的问题是安装react-router-scroll-top，并将包装器放在<App />中，如下所示:

const App = () => (
  <Router>
    <ScrollToTop>
      <App/>
    </ScrollToTop>
  </Router>
)

就是这样!它工作!

但是课程太2018年了

ScrollToTop实现与React挂钩

ScrollToTop.js

import { useEffect } from 'react';
import { withRouter } from 'react-router-dom';

function ScrollToTop({ history }) {
  useEffect(() => {
    const unlisten = history.listen(() => {
      window.scrollTo(0, 0);
    });
    return () => {
      unlisten();
    }
  }, []);

  return (null);
}

export default withRouter(ScrollToTop);

用法:

<Router>
  <Fragment>
    <ScrollToTop />
    <Switch>
        <Route path="/" exact component={Home} />
    </Switch>
  </Fragment>
</Router>

ScrollToTop也可以实现为一个包装器组件:

ScrollToTop.js

import React, { useEffect, Fragment } from 'react';
import { withRouter } from 'react-router-dom';

function ScrollToTop({ history, children }) {
  useEffect(() => {
    const unlisten = history.listen(() => {
      window.scrollTo(0, 0);
    });
    return () => {
      unlisten();
    }
  }, []);

  return <Fragment>{children}</Fragment>;
}

export default withRouter(ScrollToTop);

用法:

<Router>
  <ScrollToTop>
    <Switch>
        <Route path="/" exact component={Home} />
    </Switch>
  </ScrollToTop>
</Router>

我写了一个叫withScrollToTop的高阶组件。这个HOC有两个标志:

onComponentWillMount -导航时是否滚动到顶部(componentWillMount) onComponentDidUpdate—是否在更新时滚动到顶部(componentDidUpdate)。该标志在组件没有卸载但发生导航事件的情况下是必要的，例如，从/users/1到/users/2。

// @flow
import type { Location } from 'react-router-dom';
import type { ComponentType } from 'react';

import React, { Component } from 'react';
import { withRouter } from 'react-router-dom';

type Props = {
  location: Location,
};

type Options = {
  onComponentWillMount?: boolean,
  onComponentDidUpdate?: boolean,
};

const defaultOptions: Options = {
  onComponentWillMount: true,
  onComponentDidUpdate: true,
};

function scrollToTop() {
  window.scrollTo(0, 0);
}

const withScrollToTop = (WrappedComponent: ComponentType, options: Options = defaultOptions) => {
  return class withScrollToTopComponent extends Component<Props> {
    props: Props;

    componentWillMount() {
      if (options.onComponentWillMount) {
        scrollToTop();
      }
    }

    componentDidUpdate(prevProps: Props) {
      if (options.onComponentDidUpdate &&
        this.props.location.pathname !== prevProps.location.pathname) {
        scrollToTop();
      }
    }

    render() {
      return <WrappedComponent {...this.props} />;
    }
  };
};

export default (WrappedComponent: ComponentType, options?: Options) => {
  return withRouter(withScrollToTop(WrappedComponent, options));
};

使用它:

import withScrollToTop from './withScrollToTop';

function MyComponent() { ... }

export default withScrollToTop(MyComponent);

我唯一的解决方案是在每个文件中添加一行代码，例如:

import React from 'react';
const file = () => { document.body.scrollTop = 0; return( <div></div> ) }

2021年(React 16) -基于@Atombit的评论

下方卷轴向上，还保留了历史卷轴位置。

function ScrollToTop() {
  const history = useHistory()
  useEffect(() => {
    const unlisten = history.listen((location, action) => {
      if (action !== 'POP') {
        window.scrollTo(0, 0)
      }
    })
    return () => unlisten()
  }, [])
  return (null)
}

用法:

<Router>
  <ScrollToTop />
  <Switch>
    <Route path="/" exact component={Home} />
  </Switch>
</Router>