isCellLocked

checks whether the cell is locked

boolean isCellLocked(number rowId,number columnId, [string page] );

rowId	number	the row id
columnId	number	the column id
page	string	optional, the name of the sheet

boolean

true, if the cell is locked, otherwise - false

var isLocked = $$("ssheet").isCellLocked(rowId, columnId, page);