Update Select.md

This commit is contained in:
Isabelle Viktoria Maciohsek
2020-08-31 23:24:34 +03:00
committed by GitHub
parent 02e7233a4a
commit dd06afb0b3

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@ -7,7 +7,8 @@ Renders a `<select>` element that uses a callback function to pass its value to
- Use object destructuring to set defaults for certain attributes of the `<select>` element.
- Render a `<select>` element with the appropriate attributes and use the `callback` function in the `onChange` event to pass the value of the textarea to the parent.
- Use destructuring on the `values` array to pass an array of `value` and `text` elements and the `selected` attribute to define the initial `value` of the `<select>` element.
- Use the `selected` attribute to define the `defaultValue` of the `<select>` element.
- Use destructuring on the `values` array to pass an array of `value` and `text` elements.
```jsx
function Select({ values, callback, disabled = false, readonly = false, selected }) {
@ -15,16 +16,28 @@ function Select({ values, callback, disabled = false, readonly = false, selected
<select
disabled={disabled}
readOnly={readonly}
defaultValue={selected}
onChange={({ target: { value } }) => callback(value)}
>
{values.map(([value, text]) => (
<option selected={selected === value} value={value}>
<option value={value}>
{text}
</option>
))}
</select>
);
}
let choices = [
['grapefruit', 'Grapefruit'],
['lime', 'Lime'],
['coconut', 'Coconut'],
['mango', 'Mango']
];
ReactDOM.render(
<Select values={choices} selected="lime" callback={val => console.log(val)} />,
document.getElementById('root')
);
```
```jsx