Jquery jcart Maximum quantity of one for a specific item -

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Is there a way to limit a specific store item, so that it can be added to the jersey once? You can do this easily with simple logic compared to the built-in functionality of the plugin by

> The pseudo-code will be as follows: 

  If you try to add an item to the cart: If the item already exists in the cart and there is a property in the item ( Only 'one time')): return false; Else: Add to Cart

The volume range of car items does not seem to be a built-in option.


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