Created
October 31, 2019 07:39
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custom react hook for submit button.
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| import React, { useState } from "react"; | |
| import ReactDOM from "react-dom"; | |
| const useSubmit = submitFunction => { | |
| const [loading, setLoading] = useState(false); | |
| const [error, setError] = useState(null); | |
| const handleSubmit = async () => { | |
| try { | |
| setLoading(true); | |
| setError(null); | |
| await submitFunction(); | |
| } catch (error) { | |
| setError(error); | |
| } finally { | |
| setLoading(false); | |
| } | |
| }; | |
| return [handleSubmit, loading, error]; | |
| }; | |
| function App() { | |
| const mySubmitFunction = () => { | |
| return new Promise((resolve, reject) => { | |
| setTimeout(() => { | |
| const rnd = Math.random() * 10; | |
| rnd <= 5 ? resolve() : reject("Error state!"); | |
| }, 2000); | |
| }); | |
| }; | |
| const [handleSubmit, loading, error] = useSubmit(mySubmitFunction); | |
| return ( | |
| <div> | |
| <button onClick={handleSubmit} disabled={loading}> | |
| {!loading ? "Click me" : "Loading..."} | |
| </button> | |
| {error && <div>{error}</div>} | |
| </div> | |
| ); | |
| } | |
| const rootElement = document.getElementById("root"); | |
| ReactDOM.render(<App />, rootElement); |
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