Update snippet descriptions

This commit is contained in:
Isabelle Viktoria Maciohsek
2020-11-25 20:46:35 +02:00
parent 9d9032fda7
commit f90d8359f3
6 changed files with 81 additions and 53 deletions

View File

@ -3,28 +3,26 @@ title: TextArea
tags: components,input,beginner
---
Renders a `<textarea>` element that uses a callback function to pass its value to the parent component.
Renders an uncontrolled `<textarea>` 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 `<textarea>` element.
- Render a `<textarea>` 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 `defaultValue` passed down from the parent as the uncontrolled input field's initial value.
- Use the `onChange` event to fire the `onValueChange` callback and send the new value to the parent.
```jsx
const TextArea = ({
callback,
cols = 20,
rows = 2,
disabled = false,
readOnly = false,
placeholder = ''
defaultValue,
onValueChange,
...rest
}) => {
return (
<textarea
cols={cols}
rows={rows}
disabled={disabled}
readOnly={readOnly}
placeholder={placeholder}
onChange={({ target: { value } }) => callback(value)}
defaultValue={defaultValue}
onChange={({ target: { value } }) => onValueChange(value)}
{...rest}
/>
);
};
@ -32,7 +30,10 @@ const TextArea = ({
```jsx
ReactDOM.render(
<TextArea placeholder="Insert some text here..." callback={val => console.log(val)} />,
<TextArea
placeholder="Insert some text here..."
onValueChange={val => console.log(val)}
/>,
document.getElementById('root')
);
```