useParams
useParams
是一个客户端组件钩子,可让你读取由当前 URL 填充的路由的 动态参数。
¥useParams
is a Client Component hook that lets you read a route's dynamic params filled in by the current URL.
'use client'
import { useParams } from 'next/navigation'
export default function ExampleClientComponent() {
const params = useParams<{ tag: string; item: string }>()
// Route -> /shop/[tag]/[item]
// URL -> /shop/shoes/nike-air-max-97
// `params` -> { tag: 'shoes', item: 'nike-air-max-97' }
console.log(params)
return '...'
}
'use client'
import { useParams } from 'next/navigation'
export default function ExampleClientComponent() {
const params = useParams()
// Route -> /shop/[tag]/[item]
// URL -> /shop/shoes/nike-air-max-97
// `params` -> { tag: 'shoes', item: 'nike-air-max-97' }
console.log(params)
return '...'
}
参数
¥Parameters
const params = useParams()
useParams
不带任何参数。
¥useParams
does not take any parameters.
返回
¥Returns
useParams
返回一个对象,其中包含 动态参数 中填充的当前路由。
¥useParams
returns an object containing the current route's filled in dynamic parameters.
-
对象中的每个属性都是一个活动的动态段。
¥Each property in the object is an active dynamic segment.
-
属性名称是段的名称,属性值是段所填充的内容。
¥The properties name is the segment's name, and the properties value is what the segment is filled in with.
-
属性值将是
string
或string
的数组,具体取决于 动态段类型。¥The properties value will either be a
string
or array ofstring
's depending on the type of dynamic segment. -
如果路由不包含动态参数,则
useParams
返回空对象。¥If the route contains no dynamic parameters,
useParams
returns an empty object. -
如果在 Pages Router 中使用,
useParams
将在初始渲染时返回null
,并在路由准备就绪后按照上述规则更新属性。¥If used in Pages Router,
useParams
will returnnull
on the initial render and updates with properties following the rules above once the router is ready.
例如:
¥For example:
路由 | URL | useParams() |
---|---|---|
app/shop/page.js | /shop | {} |
app/shop/[slug]/page.js | /shop/1 | { slug: '1' } |
app/shop/[tag]/[item]/page.js | /shop/1/2 | { tag: '1', item: '2' } |
app/shop/[...slug]/page.js | /shop/1/2 | { slug: ['1', '2'] } |
版本历史
¥Version History
版本 | 变化 |
---|---|
v13.3.0 | useParams 推出。 |