useQueryStates
How to read & update multiple search params at once
Multiple updates (batching)
You can call as many state update functions as needed in a single event loop tick, and they will be applied to the URL asynchronously:
If you wish to know when the URL has been updated, and what it contains, you can await the Promise returned by the state updater function, which gives you the updated URLSearchParameters object:
Implementation details (Promise caching)
The returned Promise is cached until the next flush to the URL occurs, so all calls to a setState (of any hook) in the same event loop tick will return the same Promise reference.
Due to throttling of calls to the Web History API, the Promise may be cached for several ticks. Batched updates will be merged and flushed once to the URL. This means not every setState will reflect to the URL, if another one comes overriding it before flush occurs.
The returned React state will reflect all set values instantly, to keep UI responsive.
useQueryStates
For query keys that should always move together, you can use useQueryStates
with an object containing each key’s type:
Options
There are three places you can define options in useQueryStates
:
- As the second argument to the hook itself (global options, see above)
- On each parser, like
parseAsFloat.withOptions({ shallow: false })
- At the call level when updating the state:
The order of precedence is: call-level options > parser options > global options.
You can clear all keys managed by a useQueryStates
hook by passing
null
to the state updater function.
This will clear lat
& lng
, and leave other search params untouched.