quantity update not working

[Brecht272727]

If i use the cartLS.quantity(id,1); or cartLS.quantity(id,-1); the quantity is going p.e. from 7 by default to 71 instead of 8 What is going wrong?

[mcanguler]

If i use the cartLS.quantity(id,1); or cartLS.quantity(id,-1); the quantity is going p.e. from 7 by default to 71 instead of 8 What is going wrong?

this code is working

var $input = $('#quantityInpt' + data.id).val(); $input = parseInt($input); cartLS.add({id: data.id, name: data.name, price: data.price}, $input);