Sifa za Thamani za Kichaguzi Kutoka kwa Safu kwenye React

Wacha tuchukue kwamba vitu vya orodha bado vimehifadhiwa kwenye safu:

function App() {
	const texts = ['text1', 'text2', 'text3', 'text4'];
	const [value, setValue] = useState('');
	
	...
}

Wacha tuunde kwa kutumia safu hii vitambulisho option, tukiwapa kama sifa value thamani za vitu vya safu:

function App() {
	const texts = ['text1', 'text2', 'text3', 'text4'];
	const [value, setValue] = useState('');
	
	const options = texts.map((text, index) => {
		return <option key={index} value={index}>{text}</option>;
	});
	
	...
}

Kwa kutumia vitambulisho vilivyoundwa tuunde orodha ya kushuka:

return <div>
	<select value={value} onChange={event => setValue(event.target.value)}>
		{options}
	</select>
</div>;

Tuonyeshe kwenye aya nambari ya kitu kilichochaguliwa:

return <div>
	<select value={value} onChange={event => setValue(event.target.value)}>
		{options}
	</select>
	<p>
		chaguo lako: {value}
	</p>
</div>;

Sasa tuonyeshe maandishi ya kitu kilichochaguliwa, tukitumia nambari yake na safu yenye maandishi:

return <div>
	<select value={value} onChange={event => setValue(event.target.value)}>
		{options}
	</select>
	<p>
		chaguo lako: {texts[value]}
	</p>
</div>;

Wacha tukusanye yote pamoja na tupate msimbo ufuatao:

function App() {
	const texts = ['text1', 'text2', 'text3', 'text4'];
	const [value, setValue] = useState('');
	
	const options = texts.map((text, index) => {
		return <option key={index} value={index}>{text}</option>;
	});
	
	return <div>
		<select value={value} onChange={event => setValue(event.target.value)}>
			{options}
		</select>
		<p>
			chaguo lako: {texts[value]}
		</p>
	</div>;
}