I'm trying to show scrollbar only occurs when I scroll through the area with react. I using debounce and useState. The problem : When I scroll down to the end, the scroll event repeats indefinitely. If don't scroll down to…
so I have this parent component that has a child component. I've defined a route for this component in the main app. now i want to access this parent from another page, so i've used the Link component. The issue…
I'm working on a project in react where I just don't understand why selectedRow is always null. Why doesn't the setSelectedRow function set it inside of the onClick callback? I tried logging it to the console and it always returns…
I'm wanting to do something fairly simple in needing to filter a number of products in my React project. The array of filters (an array of strings) is stored in State. By default the array contains ["All"] until another filter…
useEffect(() => { console.log("this is first useEffect", "first"); }); useEffect(() => { console.log("this is second useEffect", "second"); }); useEffect(() => { const listen = onAuthStateChanged(auth, (user) => { setLoading(true); if (user) { setAuthUser(user); setLoading(false); console.log("this is third useEffect",user) } else…
I'm building an Ionic 7, React 18 application and having some trouble understanding a basic useEffect principle. I have this App.tsx file setupIonicReact(); const App: React.FC = () => { useEffect(() => { console.log("Loading user profile info in app..." +…
In React, i have a form with a input and a button. I use a useRef to controll the actual value of input. I want a button be disable when input text is empty, but when a use a useRef…
My react-native seems to be very slow after I added the 2 useEffects to get data from my sqlite database. It makes the app so slow that it barely responds to user inputs. How can I resolve this issue? import…
thanks for your time. In this simple codesandbox. I try to memorize the value return by a function. In my understanding, useMemo memorize the return value, which is always 2, even if count change, if the return value is the…
I am new to Firebase and want to get the email id of each user and display it next to the message. I came across the code I have attached below and am able to get the photourl of each…