How to create Custom script to multiply quantity * price = amount

[Suresh_Thakor]

My code will not work. it is for field.
your request is for grid calculation.
Try below link.

How can I make a "runtime" calculation?

Try something like this. frappe.ui.form.on('<< Child Table DocType Name >>', { << Field name on child table #1 >>: function(frm, cdt, cdn) { let gridRow = frm.open_grid_row(); if (!gridRow) { gridRow = frm.get_field('<< Field name of child table on main form >>').grid.get_row(cdn); } calAmount(gridRow); }, << Field name on child table #2 >>: function(frm, cdt, cdn) { let gridRow = frm.open_grid_row(); if (!gridRow) { gridRow = frm.get_field('<< Field name of child table on …