how to Enable custome filed using java script
cur_frm.set_df_property('field_1','read_only',0);
Thanks For your answer but how to enable child table filed on refresh event.
use this command in onload event:
var df1 = frappe.meta.get_docfield("Child Table Name","field_name", cur_frm.doc.name); df1.read_only = 1;
Thank you Sir