jQuery UI – Draggable is not a function?
A common reason this occurs is if you don’t also load jqueryui after loading jquery. For example: <script src=”https://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js” type=”text/javascript”></script> <script src=”https://ajax.googleapis.com/ajax/libs/jqueryui/1.11.4/jquery-ui.min.js” type=”text/javascript”></script> EDIT. Replace the version number for each library with appropriate or latest values for jquery and jqueryui. If this doesn’t solve the issue, review suggestions in the many other answers.