cppnewb 0 Junior Poster in Training

Hello. I am trying to instantly 'post' a user's input using ajax and jquery, along with a little javascript.

This is my HTML

<div id="postArea">
<TEXTAREA name="newBlog" cols="40" rows="10"></textarea>
<A HREF="#" onClick="post()">SUBMIT!</A>
</div>

and here is my code that goes along with that (in a separate file)

function post() {
  var postValue = document.getElementsByName('newBlog')[0].value
  $('#postArea').load(postValue);
}

I know that the variable is transferring to the java properly, but how do I place it in the 'postArea' div?

Thanks for any help!