title: jQuery equivalents to ExtJS functions extend(), apply() and namespace()?
body: <p>ExtJS provides some great helper functions like:</p>
  
  <ul>
  <li>Ext.extend()</li>
  <li>Ext.apply()</li>
  <li>Ext.namespace()</li>
  </ul>
  
  <p><strong>Are there any equivalents in jQuery?</strong> I know I could port all three to jQuery since I like them so much, but maybe I'm missing something that's already there. I would like to avoid mingling with prototypes myself if possible.</p>
  
  <p><strong>Endresult</strong></p>
  
  <ul>
  <li>Ext.apply(obj1, obj2) => $.extend(obj1, obj2)</li>
  <li>Ext.extend(obj1, obj2) => $.extend(obj1.prototype, obj2)</li>
  <li>Ext.ns(string) => custom implementation </li>
  </ul>