reactjs useState() hook
import React, { useState } from 'react';
function Example() {
// Declare a new state variable, which we'll call "count"
const [count, setCount] = useState(0);
return (
<div>
<p>You clicked {count} times</p>
<button onClick={() => setCount(count + 1)}>
Click me
</button>
</div>
);
}useState hook example
function LoginForm() {
const [form, setState] = useState({
username: '',
password: ''
});
const printValues = e => {
e.preventDefault();
console.log(form.username, form.password);
};
const updateField = e => {
setState({
...form,
[e.target.name]: e.target.value
});
};
return (
<form onSubmit={printValues}>
<label>
Username:
<input
value={form.username}
name="username"
onChange={updateField}
/>
</label>
<br />
<label>
Password:
<input
value={form.password}
name="password"
type="password"
onChange={updateField}
/>
</label>
<br />
<button>Submit</button>
</form>
);
}Copyright © 2021 Codeinu
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