react-hooks Archives - Page 2 of 2

What’s the difference between `useRef` and `createRef`?

I was going through the hooks documentation when I stumbled upon useRef. Looking at their example… function TextInputWithFocusButton() { const inputEl = useRef(null); ...

May 26, 2022
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Make React useEffect hook not run on initial render

According to the docs: componentDidUpdate() is invoked immediately after updating occurs. This method is not called for the initial render. We can use ...

May 24, 2022
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React Hook “useState” is called in function “app” which is neither a React function component or a custom React Hook function

I’m trying to use react hooks for a simple problem const...

May 24, 2022
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Push method in React Hooks (useState)?

How to push element inside useState array React hook? Is that as an old method in react state? Or something new? E.g. setState ...

May 20, 2022
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How to compare oldValues and newValues on React Hooks useEffect?

Let’s say I have 3 inputs: rate, sendAmount, and receiveAmount. I put that 3 inputs on useEffect diffing params. The rules are: If ...

May 15, 2022
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How to use componentWillMount() in React Hooks?

In the official docs of React it mentions – If you’re familiar with React class lifecycle methods, you can think of useEffect Hook ...

May 10, 2022
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React Hook Warnings for async function in useEffect: useEffect function must return a cleanup function or nothing

I was trying the useEffect example something like below: useEffect(async () => { try { const response = await fetch(`https://www.reddit.com/r/${subreddit}.json`); const json = ...

May 7, 2022
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How to call loading function with React useEffect only once

The useEffect React hook will run the passed in function on every change. This can be optimized to let it call only when ...

May 7, 2022
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The useState set method is not reflecting a change immediately

I am trying to learn hooks and the useState method has made me confused. I am assigning an initial value to a state ...

April 30, 2022
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How to fix missing dependency warning when using useEffect React Hook

With React 16.8.6 (it was good on previous version 16.8.3), I get this error when I attempt to prevent an infinite loop on ...

April 29, 2022
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