router-query/repository-context/docs/router/api/router/useParamsHook.md

---

id: useParamsHook title: useParams hook

---

The useParams method returns all of the path parameters that were parsed for the closest match and all of its parent matches.

useParams options

The useParams hook accepts an optional options object.

opts.strict option

• Type: boolean
• Optional - default: true
• If false, the opts.from option will be ignored and types will be loosened to Partial<AllParams> to reflect the shared types of all params.

opts.shouldThrow option

• Type: boolean
• Optional
• default: true
• If false,useParams will not throw an invariant exception in case a match was not found in the currently rendered matches; in this case, it will return undefined.

opts.select option

• Optional
• (params: AllParams) => TSelected
• If supplied, this function will be called with the params object and the return value will be returned from useParams. This value will also be used to determine if the hook should re-render its parent component using shallow equality checks.

opts.structuralSharing option

• Type: boolean
• Optional
• Configures whether structural sharing is enabled for the value returned by select.
• See the Render Optimizations guide for more information.

useParams returns

• An object of the match's and parent match path params or TSelected if a select function is provided.

Examples

import { useParams } from '@tanstack/react-router'

const routeApi = getRouteApi('/posts/$postId')

function Component() {
  const params = useParams({ from: '/posts/$postId' })

  // OR

  const routeParams = routeApi.useParams()

  // OR

  const postId = useParams({
    from: '/posts/$postId',
    select: (params) => params.postId,
  })

  // OR

  const looseParams = useParams({ strict: false })

  // ...
}