Is it possible to get all the column ids of a sublist from a client script? Wish there was a

record.getAllColumns({ sublistId })

method.

Not natively. There are some workarounds but I don't love them

the risky javascript answer is

getMachine('item').getFormFieldNames()

@battk I think that solution only works on a native NetSuite record but it does not appear to work on a sublist generated in a Suitelet. I did manage to find another solution that is similarly hacky

document.querySelector("[name='" + sublistId + "fields']").value.split('\u0001');

did you replace 'item' with the id of your sublist