Determining the last row in a single column

Question

I have a sheet with data in cols A through H.

I need to determine the last row in column A that contains data (it\'s all conti

Answer 1

Update from Mogsdad solution,

var Avals = ss.getRange("A1:A").getValues();
var Alast = Avals.filter(function(r){return r[0].length>0});