ReferenceError: Joomla is not defined

Question

I am developing a joomla component. It is executing but giving

ReferenceError: Joomla is not defined

I check that default java scripts like motool.js core.js are not loading.

How can I load them automatically and not manually like <script src=""></script>?.

Answer 1

JHTML::_('behavior.mootools');

should load mootools.

If core is not loaded then run

JHtml::_('script', 'system/core.js', false, true);

Answer 2

my problem was with public $live_site var in configuration.php. I didn't use http:// prefix before it, so all links to scripts in admin panel looked like http://mycoolsite.com/administartor/mycoolsite.com/media/system/js/script.js

That's why Joomla Object was not loading. Hope this will help someone.