i already know how to add new field to shipping address form in checkout, but i need to modify the behavior of some fields. For example:
- there is a checkbox "Deliver to Packing station";
- if checkbox is selected, "street" fields becomes hidden and not required, but 2 new fields ("Packing station #" and "Post #") becomes visible and required.
I completely stuck with that. I'm not very familiar with knockout, just have read some lessons on it. Any help/ideas? (except "go learn knockout.js" :))