jQuery(…).activeform is not a function in Yii

Question

I am developing a project with Yii.

I need to use jquery ui on many pages of site. So I add jquery core library and jquery ui library in the layout of site to have a

Answer 1

If you include jQuery core libraries manually in your layout file, it could be possible that jQuery gets loaded a second time and overrides the original jQuery object which had the Yii plugins attached.

You should use Yii::app()->clientScript->registerCoreScript('jquery.ui') instead.