title: How to catch enter keypress on textarea but not shift+enter?
body: <p>I'm doing it for texarea. A function should be called when the user press <kbd>Enter</kbd>, but nothing should be done when <kbd>Shift</kbd> + <kbd>Enter</kbd> be pressed.</p>
  
  <p>I try to simulate here a feature that many IM communicators have: sending a message on <kbd>Enter</kbd> but also adding multiple lines using <kbd>Shift</kbd> + <kbd>Enter</kbd>.</p>