I have data like this: const [purchaseTypes, setPurchaseTypes] = useState([]); const purchaseInitData = [ { id: 1, name: 'liveType', purchaseType: 'liveType', label: 'purchase live training' }, { id: 2, name: 'courseType', purchaseType: 'courseType', label: 'purchase course videos'}]; input checkboxes: {purchaseData.map((item,…
I am trying to make a basketball scoreboard app in React and have each team as it's own object with score, field goals made, and field goal attempts as properties. I have buttons that increment all of these properties and…
useEffect(() => { const controller = new AbortController(); fetchReviews(); setNewReviewAdded(false); return () => { controller.abort(); }; }, [newReviewAdded]); I wanted this effect to run initially and whenever new reviews are added, so in this effect after fetching the new reviews…
React newbie here. I found out this is not the correct way to pass useRef() to child components but why is it not throwing an error and seems to be working fine. const App = () => { const todoRef…
I am relatively new to React and I am trying to create a todo list that would display current and completed tasks simultaneously using LocalStorage. My tasks contain a property called "active", a boolean set to true when a user…
In my usecase there are two screens (stacknavigator) and from the first screen it need to get data from firebase (using getList() method) and need to show them in a flat list. Then detailed screen show all the data. When…
How should i update properties of some object in state, if i dont know exactly which properties i want to update, i get these properties from the arguments of a function, and argument is an array of keys i want…
I am creating a website using React. I have an useState array that holds the response from the server, a list of orders. The useState feature invokes a component that shows one element of the array at a time, when…
When I use React.useEffect hook with empty dependency array, it re-renders on every re-routing when the back button pressed, not only once. Is there a minimal solution for a function to execute only once inside the whole app?
When I call getRequestContext anywhere in my app after I have updated context, my callback does not use the new value, but instead always uses the old value. Any ideas on how to ensure that I always retrieve the most…