JavaScript File

I'm using the useHover() react hook defined in this recipe. The hook returns a ref and a boolea… Read more Using Multiple Refs On A Single React Element

This is an expansion on a previous question asking how to run an effect by adding an HTML class onc… Read more How To Run Effect Depending On If A Value Increases Or Decreases In React?

I'm using a functional component. I'm aware setColor changes the value of color asynchronou… Read more Callback Doesn't Receive The Updated Version Of State Even When It Fires Well After State Changes

I am trying to pass up the state 'region' defined in my useState Hook to the parent element… Read more Passing Usestate From Child Component To Parent Component?

EDIT (22 June 2020): as this question has some renewed interest, I realise there may be a few point… Read more React Hooks: Accessing Up-to-date State From Within A Callback

I have react app with ticket polling (ticket is part of link for websocket connection). Then I pass… Read more What Is Best Practice To Websocket Reconnect In React?

I wanted to use 'React Bootstrap Hamburger Menu' HamburgerMenu copied the code from there a… Read more React - Error: Invalid Hook Call. Hooks Can Only Be Called Inside Of The Body Of A Function Component

There's a fixed number of settings that determine whether the component should be visible, i.e.… Read more Redundant Piece Of Code Using React Hooks

Basically we bind event handler functions in constructor or make them as arrow functions in React c… Read more How Can I Bind Function With Hooks In React?

I am trying to render a component if (age Solution 1: You don't actually need state here. Just… Read more Conditional Rendering Is Not Working In My Functional Component

My application has a user input an id to send as a request and the response data that matches that … Read more How To Fetch Existing Cache Data On Every Input Change?

I am looking to write a React hook with React 16.8.6 that will let me scroll to a particular HTML e… Read more React Hooks Scroll To Element

I want to set the const [solution, setSolution] = useState(0); with the value of a input element b… Read more Using Useref Or Createref

I have sample code below: function App() { console.log('render'); const [val, setVal] =… Read more React Hooks Usestate Setvalue Still Rerender One More Time When Value Is Equal

I need to access a method handleCancelEdit() defined in parent component. But, the matter here is t… Read more Reactjs: How To Access State Of Child Component.from A Method In Parent Component That Depends On State Of Child Component

I have set the state to true before calling the setInterval function. But even though the useEffect… Read more Setinterval Is Not Showing Updated State

I want to update state with the inner window height as I resize the screen. When I log the state he… Read more React Hooks Useeffect Update Window.innerheight

I'm fetching data from a weather api using useEffect hook and declaring the dependency correctl… Read more Useeffect Not Being Called And Not Updating State When Api Is Fetched

Consider this basic form fields component with a custom form hook to handle input changes: import … Read more Usage Of Usecallback And Setting New Object State Using Previous State As Argument

I receive some info from an API based on some ids. there are 3 job objects, each job has an array o… Read more Array Doesnt Display All Of The Items Inside It React Javascript