It would be better to show an AJAX loading animation when your customer click the add to cart button in bootstrap template. Otherwise, your customer won’t get any notification to know that current action is being processed by system when the network is slow. I have implemented an animation which looks like:
As you can see, this feature should improve the user experience to a certain extent. Now, i will teach you how to integrate it into your store.
Step 1. Download the package at https://www.dropbox.com/s/5vk7xe1u1i9aspn/popup_ajaxloading.zip?dl=0
Step 2. Unzip the package and then you will see following file structure:
That’s it. Finally, you just need to clear the cache of your web browser to test the new feature in your store.