--- title: useSearchParams (RN) --- # `useSearchParams` (React Native) This is the React Native version of `useSearchParams`. For the web version, [go here][usesearchparams].
Type declaration ```tsx declare function useSearchParams( defaultInit?: URLSearchParamsInit ): [URLSearchParams, SetURLSearchParams]; type ParamKeyValuePair = [string, string]; type URLSearchParamsInit = | string | ParamKeyValuePair[] | Record | URLSearchParams; type SetURLSearchParams = ( nextInit?: | URLSearchParamsInit | ((prev: URLSearchParams) => URLSearchParamsInit), navigateOpts?: : NavigateOptions ) => void; interface NavigateOptions { replace?: boolean; state?: any; preventScrollReset?: boolean; } ```
The `useSearchParams` hook is used to read and modify the query string in the URL for the current location. Like React's own [`useState` hook][usestate], `useSearchParams` returns an array of two values: the current location's [search params][searchparams] and a function that may be used to update them. Just as React's [`useState` hook][usestate], `setSearchParams` also supports [functional updates][functional-updates]. Therefore, you may provide a function that takes a `searchParams` and returns an updated version. ```tsx import * as React from "react"; import { View, SearchForm, TextInput } from "react-native"; import { useSearchParams } from "react-router-native"; function App() { let [searchParams, setSearchParams] = useSearchParams(); let [query, setQuery] = React.useState( searchParams.get("query") ); function handleSubmit() { setSearchParams({ query }); } return ( ); } ``` [functional-updates]: https://reactjs.org/docs/hooks-reference.html#functional-updates [searchparams]: https://developer.mozilla.org/en-US/docs/Web/API/URL/searchParams [usesearchparams]: ./use-search-params [usestate]: https://reactjs.org/docs/hooks-reference.html#usestate