[英]How to pass location state and URL params using React-Router?
When I click on the link in the HoverBooks
Component to get to a new page where I can render the book
location state in Book
component, but when I press on it nothing happens.当我单击
HoverBooks
组件中的链接进入一个新页面时,我可以在Book
组件中呈现book
位置 state,但是当我按下它时没有任何反应。 I think the error is in Route
:我认为错误在于
Route
:
function App() {
return (
<div className="App">
<Router>
<Switch>
<Route path="/book:/book.Key">
<Book />
</Route>
<Route path="/signin">
<Signin />
</Route>
<Route path="/">
<Header />
<Home />
</Route>
</Switch>
</Router>
</div>
)
}
export default App
import React from 'react'
import { useLocation } from 'react-router-dom'
const Book = () => {
const {
state: { book },
} = useLocation()
console.log({ book })
return (
<div key={book.key}>
<h1>{book.bookName}</h1>
</div>
)
}
export default Book
const HoverBooks = ({ ...book }) => {
const [inHoverBooks, setInHoverBooks] = React.useState(false)
return (
<>
<Link
to={{
pathName: `/book/${book.key}`,
state: {
book,
},
}}
>
<img
onMouseLeave={() => setInHoverBooks(false)}
onMouseEnter={() => setInHoverBooks(true)}
src={book.image}
key={book.key}
/>
</Link>
{inHoverBooks && (
<div className="hover__containter">
<h3>{book.bookName}</h3>
<h2>{book.by}</h2>
<h2>{book.Narreted}</h2>
<h2>{book.length}</h2>
<h2>{book.rating}</h2>
</div>
)}
</>
)
}
export default HoverBooks
Below is the correct form, eg /:someName
, to define a route with URL params :下面是使用URL 参数定义路由的正确形式,例如
/:someName
:
<Route path="/book/:bookKey">
<Book />
</Route>
And here is the right syntax to make a Link
for the above route:这是为上述路线创建
Link
的正确语法:
<Link
to={{
pathname: `/book/SOME_BOOK_KEY`, // replace SOME_BOOK_KEY with some value
state: {
book, // e.g. const book = { key: 'js', bookName: 'Learn JavaScript'}
},
}}
>
<img src="some_src" alt="something" />
</Link>
And you useParams and useLocation react-hooks to access the "URL params" and "location state" in a component:并且您使用Params和useLocation react-hooks 来访问组件中的“URL 参数”和“位置状态”:
const Book = () => {
const {
state: { book },
} = useLocation()
const { bookKey } = useParams();
console.log(book, bookKey)
// prints "book" object (from location state) and "bookKey" (from URL params)
return (
<div key={book.key}>
<h1>{book.bookName}</h1>
</div>
)
}
I would suggest you to add typescript to your ReactJS app.我建议您将typescript添加到您的 ReactJS 应用程序中。 It helps you find errors early by doing "static Type-checking".
它通过执行“静态类型检查”帮助您及早发现错误。
With react router you need to pass the component you want to render to the Route
like this使用反应路由器,您需要像这样将要渲染的组件传递给
Route
const ComponentA = (props) => {...}
<Route path="/component-a" component={ComponentA} />
And here is how to link to component a这里是如何链接到组件 a
<Link to="/component-a" >Go to component A</Link>
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