Pobranie elementu po id i dodanie styli css

<div id="div_one"><p>lorem ipusm</p></div>
<!-- javascript -->
<script>
  var element = document.getElementById("div_one");
  element.style.color = "red";
</script>
<!-- jquery -->
<script type="text/javascript" src="http://code.jquery.com/jquery-latest.pack.js"></script>
<script>
  var element = $("#div_one");
  element.css('color','red');
</script>