I have a site on Magento 1.9,the product options do not show on the front end for configurable products. It throws the error like this.
Uncaught TypeError: Cannot read property 'hasClassName' of null
Currently I have not made no changes on the site but I am unable to figure out the exact problem. How do I go ahead. I have refered to previous answers(link) which mentioned about checking following things in case for product options not shown up on product page. And in my case these all conditions are met and yet I'm stuck on this.