Create Select.md

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Angelos Chalaris
2018-12-10 10:48:03 +02:00
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### Select
Renders a `<select>` element that uses a callback function to pass its value to the parent component.
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 the `values` array to pass an array of `[value, text]` elements and the `selected` attribute to define the initial `value` of the `<select>` element.
```jsx
function Select ({ values, callback, disabled = false, readonly = false, selected }) {
return (
<select
disabled={disabled}
readOnly={readonly}
onChange={(event) => callback(event.target.value)}
>
{values.map(v => <option selected={selected === v[0]}value={v[0]}>{v[1]}</option>)}
</select>
);
}
```
```jsx
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')
);
```
<!-- tags: input,functional -->
<!-- expertise: 0 -->