Unverified

Name

React useToggle

About

Basically, what this hook does is that, it takes a parameter with value true or false and toggles that value to opposite. It's useful when we want to take some action into it's opposite action, for example: show and hide modal, show more/show less text, open/close side menu.

Language

Javascript

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Codevault

draison

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History

Last modified:

23/09/2022

Important Note

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Learn More

React useToggle

 
                    
 1import { useCallback, useState } from 'react';
 2// Usage
 3function App() {
 4    // Call the hook which returns, current value and the toggler function
 5    const [isTextChanged, setIsTextChanged] = useToggle();
 6 
 7    return (
 8        <button onClick={setIsTextChanged}>{isTextChanged ? 'Toggled' : 'Click to Toggle'}</button>
 9    );
10}
11// Hook
12// Parameter is the boolean, with default "false" value
13const useToggle = (initialState = false) => {
14    // Initialize the state
15    const [state, setState] = useState(initialState);
16 
17    // Define and memorize toggler function in case we pass down the component,
18    // This function change the boolean value to it's opposite value
19    const toggle = useCallback(() => setState(state => !state), []);
20 
21    return [state, toggle]
22}

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Basically, what this hook does is that, it takes a parameter with value true or false and toggles that value to opposite. It's useful when we want to take some action into it's opposite action, for ex...

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