HTML 5 - Store Counter that switches item to "sold out" after a certain number of purchases / clicks Options

[bigmowebsites]

Hello WDG Community-

I am in the process of creating an HTML 5 website for a friend - the site is coming along nicely, however I am struggling with one specific thing; my friend wants a feature implemented where the system will count how many items are sold, and then once the item is sold, it will no longer let the item be purchased. For example -
My friend has 10 shirts he wants to sell. Once 10 of them have been sold, is there a way to make the button non clickable until the item is back in stock? I think this requires a server to be implemented - if so I can try to download a virtual server on my PC.

Thanks in advance, any help is greatly appreciated