React挂钩2020:)

import React, { useLayoutEffect } from 'react';
import { useLocation } from 'react-router-dom';

const ScrollToTop: React.FC = () => {
  const { pathname } = useLocation();
  useLayoutEffect(() => {
    window.scrollTo(0, 0);
  }, [pathname]);

  return null;
};

export default ScrollToTop;

在主组件中。

只需添加这个React钩子(如果你没有使用React类):

const oldPage = useRef(pathname)

useEffect(() => {
  if (pathname !== oldPage.current) {
    try {
      window.scroll({
        top: 0,
        left: 0,
        behavior: 'smooth'
      })
    } catch (error) {
      // for older browser
      window.scrollTo(0, 0)
    }
    oldPage.current = pathname
  }
}, [pathname])

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);

反应16.8 + 如果你正在运行React 16.8+，这是一个简单的处理组件，它会在每个导航中向上滚动窗口: 这是scrollToTop.js组件

import { useEffect } from "react";
import { useLocation } from "react-router-dom";

export default function ScrollToTop() {
  const { pathname } = useLocation();

  useEffect(() => {
    window.scrollTo(0, 0);
  }, [pathname]);

  return null;
}

然后在应用程序的顶部渲染它，但在路由器下面 这是在app.js中

import ScrollToTop from "./scrollToTop";

function App() {
  return (
    <Router>
      <ScrollToTop />
      <App />
    </Router>
  );
}

或者在index.js中

import ScrollToTop from "./scrollToTop";

ReactDOM.render(
    <BrowserRouter>
        <ScrollToTop />
        <App />
    </BrowserRouter>
    document.getElementById("root")
);

利用钩子，你可以简单地在代码库的useEffect中插入window.scrollTo(0,0)。简单地在你的应用程序中实现代码片段，它应该在它的窗口顶部加载每个页面。

import { useEffect } from 'react';

useEffect(() => {
   window.scrollTo(0, 0);
}, []);

对于'REACT-ROUTER-DOM v6及以上'

我通过创建一个包装器函数并将其包装在所有路由上解决了以下问题。

请遵循以下步骤:

1:需要导入以下内容:

import {Routes, Route, BrowserRouter as Router, useLocation} from 'react-router-dom';
import {useLayoutEffect} from 'react';

2:在"App"函数上面写一个包装器函数:

const Wrapper = ({children}) => {
  const location = useLocation();
  useLayoutEffect(() => {
    document.documentElement.scrollTo(0, 0);
  }, [location.pathname]);
  return children
} 

3:现在在包装器函数中包装你的路由:

<BrowserRouter>
  <Wrapper>
    <Navbar />
      <Routes>
        <Route exact path="/" element={<Home/>} />
        <Route path="/Products" element={<Products/>} />
        <Route path="/Login" element={<Login/>} />
        <Route path="/Aggressive" element={<Aggressive/>} />
        <Route path="/Attendance" element={<Attendance/>} />
        <Route path="/Choking" element={<Choking/>} />
        <Route path="/EmptyCounter" element={<EmptyCounter/>} />
        <Route path="/FaceMask" element={<FaceMask/>} />
        <Route path="/Fainting" element={<Fainting/>} />
        <Route path="/Smoking" element={<Smoking/>} />
        <Route path="/SocialDistancing" element={<SocialDistancing/>} />
        <Route path="/Weapon" element={<Weapon/>} />
      </Routes>
    <Footer />
  </Wrapper>
</BrowserRouter>

这应该能解决问题。