React-daky sanawdan value atributlary selekta

Bolsa, ýene-de sanaw elementlerimiz sanawda saklanylsyn:

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

Geliň, bu sanawy ulanyp, option teglerini döredeliň we olara san elementleriniň mazmunyny value atributy hökmünde goşalyň:

jsxfunction 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>;
  });
  
  ...
}

Döredilen tegleri ulanyp, açylýan sanawy döredeliň:

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

Saýlanylan elementiniň nomerini abzasa çykaryň:

jsxreturn <div>
  <select value={value} onChange={event => setValue(event.target.value)}>
    {options}
  </select>
  <p>
    siziň saýlanyşyňyz: {value}
  </p>
</div>;

Indi bolsa, onuň nomerini we tekstleriň sanawyny ulanyp, saýlanylan elementiniň tekstini çykaryň:

jsxreturn <div>
  <select value={value} onChange={event => setValue(event.target.value)}>
    {options}
  </select>
  <p>
    siziň saýlanyşyňyz: {texts[value]}
  </p>
</div>;

Hemmesini bir ýere jemläp, aşakdaky kody alyň:

jsxfunction 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>
      siziň saýlanyşyňyz: {texts[value]}
    </p>
  </div>;
}