I need to modify the Opportunity Items table on the Opportunity form.
When the user selects the item_code, I need to update another field in that row.
Does Frappe have a built-in way to run js code when a field in a Child Table changes?
Yes, Frappe provides a built-in way to run JavaScript code when a field in a child table changes. You can achieve this by using Frappe’s custom script feature.
For more detailed information on how to implement this, please refer to the Frappe documentation here.