useSearchParams
useSearchParams is a Client Component hook that lets you read the current URL's query string.
useSearchParams returns a read-only version of the URLSearchParams interface.
'use client'
import { useSearchParams } from 'next/navigation'
export default function SearchBar() {
const searchParams = useSearchParams()
const search = searchParams.get('search')
// URL -> `/dashboard?search=my-project`
// `search` -> 'my-project'
return <>Search: {search}</>
}Parameters
const searchParams = useSearchParams()useSearchParams does not take any parameters.
Returns
useSearchParams returns a read-only version of the URLSearchParams interface, which includes utility methods for reading the URL's query string:
-
URLSearchParams.get(): Returns the first value associated with the search parameter. For example:URL searchParams.get("a")/dashboard?a=1'1'/dashboard?a=''/dashboard?b=3null/dashboard?a=1&a=2'1'- usegetAll()to get all values -
URLSearchParams.has(): Returns a boolean value indicating if the given parameter exists. For example:URL searchParams.has("a")/dashboard?a=1true/dashboard?b=3false -
Learn more about other read-only methods of
URLSearchParams, including thegetAll(),keys(),values(),entries(),forEach(), andtoString().
Good to know:
useSearchParamsis a Client Component hook and is not supported in Server Components to prevent stale values during partial rendering.- If an application includes the
/pagesdirectory,useSearchParamswill returnReadonlyURLSearchParams | null. Thenullvalue is for compatibility during migration since search params cannot be known during pre-rendering of a page that doesn't usegetServerSideProps
Behavior
Static Rendering
If a route is statically rendered, calling useSearchParams() will cause the tree up to the closest Suspense boundary to be client-side rendered.
This allows a part of the page to be statically rendered while the dynamic part that uses searchParams is client-side rendered.
You can reduce the portion of the route that is client-side rendered by wrapping the component that uses useSearchParams in a Suspense boundary. For example:
'use client'
import { useSearchParams } from 'next/navigation'
export default function SearchBar() {
const searchParams = useSearchParams()
const search = searchParams.get('search')
// This will not be logged on the server when using static rendering
console.log(search)
return <>Search: {search}</>
}import { Suspense } from 'react'
import SearchBar from './search-bar'
// This component passed as a fallback to the Suspense boundary
// will be rendered in place of the search bar in the initial HTML.
// When the value is available during React hydration the fallback
// will be replaced with the `<SearchBar>` component.
function SearchBarFallback() {
return <>placeholder</>
}
export default function Page() {
return (
<>
<nav>
<Suspense fallback={<SearchBarFallback />}>
<SearchBar />
</Suspense>
</nav>
<h1>Dashboard</h1>
</>
)
}Dynamic Rendering
If a route is dynamically rendered, useSearchParams will be available on the server during the initial server render of the Client Component.
Good to know: Setting the
dynamicroute segment config option toforce-dynamiccan be used to force dynamic rendering.
For example:
'use client'
import { useSearchParams } from 'next/navigation'
export default function SearchBar() {
const searchParams = useSearchParams()
const search = searchParams.get('search')
// This will be logged on the server during the initial render
// and on the client on subsequent navigations.
console.log(search)
return <>Search: {search}</>
}import SearchBar from './search-bar'
export const dynamic = 'force-dynamic'
export default function Page() {
return (
<>
<nav>
<SearchBar />
</nav>
<h1>Dashboard</h1>
</>
)
}Server Components
Pages
To access search params in Pages (Server Components), use the searchParams prop.
Layouts
Unlike Pages, Layouts (Server Components) do not receive the searchParams prop. This is because a shared layout is not re-rendered during navigation which could lead to stale searchParams between navigations. View detailed explanation.
Instead, use the Page searchParams prop or the useSearchParams hook in a Client Component, which is re-rendered on the client with the latest searchParams.
Examples
Updating searchParams
You can use useRouter or Link to set new searchParams. After a navigation is performed, the current page.js will receive an updated searchParams prop.
export default function ExampleClientComponent() {
const router = useRouter()
const pathname = usePathname()
const searchParams = useSearchParams()!
// Get a new searchParams string by merging the current
// searchParams with a provided key/value pair
const createQueryString = useCallback(
(name: string, value: string) => {
const params = new URLSearchParams(searchParams)
params.set(name, value)
return params.toString()
},
[searchParams]
)
return (
<>
<p>Sort By</p>
{/* using useRouter */}
<button
onClick={() => {
// <pathname>?sort=asc
router.push(pathname + '?' + createQueryString('sort', 'asc'))
}}
>
ASC
</button>
{/* using <Link> */}
<Link
href={
// <pathname>?sort=desc
pathname + '?' + createQueryString('sort', 'desc')
}
>
DESC
</Link>
</>
)
}Version History
| Version | Changes |
|---|---|
v13.0.0 | useSearchParams introduced. |
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