Reactda massivdan tanlangan value atributlari

Faraz qilaylik, ro'yxat elementlari yana massivda saqlansin:

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

Keling, ushbu massiv yordamida option teglarini shakllantiramiz, ularga elementlarning value atribut qiymatlari sifatida qo'shamiz:

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>;
	});
	
	...
}

Shakllantirilgan teglardan foydalanib, ochiladigan ro'yxat yaratamiz:

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

Tanlangan element raqamini abzatsda ko'rsatamiz:

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

Endi esa tanlangan elementning matnini ko'rsatamiz, uning raqami va matnlar massividan foydalanib:

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

Hammasini birlashtirib, quyidagi kodni olamiz:

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>
			sizning tanlovingiz: {texts[value]}
		</p>
	</div>;
}