I'm using custom modules to show quantity increment/decrement in quantity box
using KnockoutJS.
Making custom modules for every folder is correct.but it nothing happpend, after click on increment/decrement button on product details page in magentov2.1.9.
I followed this link during this task:
https://magenticians.com/quantity-increment-decrement-magento-2/
what are missing from my side.
Best Answer
=> Go to your theme Folder and create file called
addtocart.phtml
and past below code.Quantity Increment and Decrement Button working fine by using below code
E.g :