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Provider value ์—์„œ ์ฃผ์˜ํ•ด์•ผ ํ•  ์‚ฌํ•ญ ๋ณธ๋ฌธ

React ๐Ÿ“

Provider value ์—์„œ ์ฃผ์˜ํ•ด์•ผ ํ•  ์‚ฌํ•ญ

๋ณ„๊น… 2022. 12. 5. 00:40
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์ปจํ…์ŠคํŠธ๋Š” ์žฌ๋ Œ๋”๋ง ์—ฌ๋ถ€๋ฅผ ๊ฒฐ์ •ํ•  ๋•Œ ๋ ˆํผ๋Ÿฐ์Šค ์ •๋ณด๋ฅผ ์‚ฌ์šฉํ•˜๊ธฐ์—

Provider ์˜ ๋ถ€๋ชจ ์ปดํฌ๋„ŒํŠธ๊ฐ€ ์žฌ๋ Œ๋”๋ง ๋˜์—ˆ์„ ๊ฒฝ์šฐ, ์˜๋„์น˜ ์•Š๊ฒŒ ํ•˜์œ„ consumer ์ปดํฌ๋„ŒํŠธ์˜ ์žฌ๋ Œ๋”๋ง์ด ์ผ์–ด๋‚  ์ˆ˜ ์žˆ์Œ.

 

function App (props) {
    return (
        <MyContext.Provider value={{ etc: 'etc' }}>
            <Toolbar />
        </MyContext.Provider>
    );
}

 

์œ„ ์ฝ”๋“œ๋Š” Provider ์ปดํฌ๋„ŒํŠธ๊ฐ€ ์žฌ๋ Œ๋”๋ง ๋  ๋•Œ๋งˆ๋‹ค ๋ชจ๋“  ํ•˜์œ„ consumer ์ปดํฌ๋„ŒํŠธ์˜ ์žฌ๋ Œ๋”๋ง์ด ๋ฐœ์ƒํ•˜๋Š” ์ฝ”๋“œ์ž„.

์™œ๋ƒ? value  prop์„ ์œ„ํ•œ ์ƒˆ๋กœ์šด ๊ฐ์ฒด๊ฐ€ ๋งค๋ฒˆ ์ƒ์„ฑ๋˜๊ธฐ ๋•Œ๋ฌธ์ž„.

 

function App(props) {
    const [value, setValue] = useState({ etc: 'etc' });

    return (
        <MyContext.Provider value={value}>
            <Toolbar />
        </MyContext.Provider>
    );
}

 

์ด๋ฅผ ๋ฐฉ์ง€ํ•˜๊ธฐ ์œ„ํ•ด์„  ์œ„์˜ ์ฝ”๋“œ์ฒ˜๋Ÿผ value ๋ฅผ ์ง์ ‘ ๋„ฃ๋Š” ๊ฒƒ์ด ์•„๋‹ˆ๋ผ~

์ปดํฌ๋„ŒํŠธ์˜ state ๋กœ ์˜ฎ๊ธฐ๊ณ , ํ•ด๋‹น state ์˜ ๊ฐ’์„ ๋„ฃ์–ด ์ค˜์•ผ ํ•จ!

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