如果您不介意使用react-router-dom
,那么您可以跟踪历史更改并id
通过hash
历史更改将滚动位置更新为 HTML 元素的位置。这种方法的优点是您不必使用状态,也不必使用引用,并且它可以在整个应用程序中扩展(无论元素位于应用程序树中的哪个位置,您都可以滚动到它们)。
工作示例:
https://fglet.codesandbox.io/(演示)
https://codesandbox.io/s/fglet(来源——不幸的是,在codesandbox编辑器中不起作用)
components/ScrollHandler(侦听哈希历史更改的钩子,搜索与位于哈希中的 id 匹配的元素,如果找到匹配的元素 id,则它将滚动到该元素)
import { useEffect } from "react";
import PropTypes from "prop-types";
import { withRouter } from "react-router-dom";
const ScrollHandler = ({ location }) => {
useEffect(() => {
const element = document.getElementById(location.hash));
setTimeout(() => {
window.scrollTo({
behavior: element ? "smooth" : "auto",
top: element ? element.offsetTop : 0
});
}, 100);
}, [location]);
return null;
};
ScrollHandler.propTypes = {
location: PropTypes.shape({
pathname: PropTypes.string,
search: PropTypes.string,
hash: PropTypes.string,
state: PropTypes.any,
key: PropTypes.string
}).isRequired
};
export default withRouter(ScrollHandler);
组件/导航(更改 url 哈希历史位置的链接)
import React from "react";
import { Link } from "react-router-dom";
import List from "../List";
const Navigation = () => (
<List>
{[1, 2, 3, 4, 5].map(num => (
<li key={num}>
<Link to={`/#section${num}`}>Section {num}</Link>
</li>
))}
</List>
);
export default Navigation;
组件/部分(Headline
组件包含id
将与之匹配的 )
import React from "react";
import Headline from "../Headline";
const Sections = () =>
[1, 2, 3, 4, 5].map(num => (
<Headline key={num} id={`#section${num}`}>
Section {num}
</Headline>
));
export default Sections;
索引.js
import React from "react";
import { render } from "react-dom";
import { BrowserRouter } from "react-router-dom";
import Container from "./components/Container";
import Navigation from "./components/Navigation";
import Sections from "./components/Sections";
import ScrollHandler from "./components/ScrollHandler";
import "./styles.css";
const App = () => (
<BrowserRouter>
<Container>
<ScrollHandler />
<Navigation />
<Sections />
</Container>
</BrowserRouter>
);
render(<App />, document.getElementById("root"));