How to apply filter in child table according to other child table value

[SanaullaHaq]

This filter needs to implemented in the Parent doc.

frappe.ui.form.on(<ParentDoctype>, {
    onload: function(frm) {
		frm.set_query('<child_tables_link_fieldname>', '<fieldname_of_childtable_in_parentdoc>', ()=>{
		    return{
		        filters:{
		            //condition here
		        }
		    }
		})
	}
})

Refer to the official documentation frm-set-query