SO fiddle

Test Fiddle mainly for SO Questions

by Nick Craver

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.4/themes/overcast/jquery-ui.css">
<div id='parent'>
   this text is for parent

   <div id='child-parent'> 
     this text if for child-parent  

       <div id='child'>
        and this text is for child.   
       </div>   

   </div>

</div>

JavaScript

alert($('#parent').contents().filter(function() { return this.nodeType == 3; }).text());