30-seconds-of-code/snippets/TextArea.md

TextArea

Renders a <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.

function TextArea ({ callback, cols = 20, rows = 2, disabled = false, readOnly = false, placeholder='' }) {
  return (
    <textarea 
      cols={cols}
      rows={rows}
      disabled={disabled} 
      readOnly={readOnly} 
      placeholder={placeholder}
      onChange={(event) => callback(event.target.value)} 
    />
  );
}

ReactDOM.render(
  <TextArea placeholder='Insert some text here...' callback={(val) => console.log(val)}/>,
  document.getElementById('root')
);