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January 27, 2020 21:33
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Custom hooks
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// useToggle hook | |
function useToggle(initialValue = false) { | |
const [state, setState] = useState(initialValue); | |
const toggle = () =>{ | |
setState(!state); | |
} | |
return [state, toggle] | |
} | |
// Force update hook | |
function useForceUpdate(){ | |
const [value, set] = useState(true); //boolean state | |
return () => set(value => !value); // toggle the state to force render | |
} | |
const forceUpdate = useForceUpdate(); | |
// Component did mount hook | |
const useMountEffect = (fn) => useEffect(() =>{ fn()}, []); | |
useMountEffect(someFunction); | |
// Api request hook | |
export default () => { | |
const [results, setResults] = useState([]); | |
const [errorMessage, setErrorMessage] = useState(""); | |
const getApi = async (url) => { | |
try { | |
const response = await settings.get(url); | |
setErrorMessage(false); | |
setResults(response); | |
} catch (err) { | |
setErrorMessage("Server request failed"); | |
} | |
}; | |
useEffect(() => { | |
getApi('') | |
}, []); | |
return [getApi, results, errorMessage]; | |
} |
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