Is there a way in React to just refresh a component not the window but the component itself? This is so I can re-trigger a react-query. I know I can use useEffect()
but what would be the way to do it?
So I know I could do, something like:
useEffect(() => {
setFetchData(result);
}, [result]);
This would trigger the component to re-render when result
changes. But how can you have a button that would manually refresh the component or re-render it.
You have to change a state to trigger component re-render. So, you can create any state and change it by clicking on a button:
const [value, setValue] = useState(false)
return (
...other jsx code
<button onClick={()=>setValue(!value)}>Trigger re-render</button>
)
If you are trying to refresh the component just to re-trigger a query from react-query
, you'd better use refetch
function provided by useQuery
hook.
const { data, refetch, ... } = useQuery(...);
return (
<>
{(data?.yourQuery?.results || []).map(result => ...)}
<button onClick={refetch}>Refetch!</button>
</>
)
If there are some changes of data
after calling refetch
, the component will be automatically rerendered.
You can do it like this:
const [reload, setReload] = useState()
useEffect(() => {
// Add your code here
}, [reload]);
return (
<button onClick={() => setReload(!reload)} >Reload</button>
);
And anytime you click the button it will execute the code inside the useEffect and update the component.
You can do something like this
const [num, setNum] = useState(0)
return
(
<React.Fragment>
{num}
<button onClick={()=>setNum({prevNum => prevNum + 1)}>Click to Render</button>
</React.Fragment>
)
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