zooming in shows blank tiles

Discussion created by khajur on Apr 28, 2014
Latest reply on May 1, 2014 by khajur
if i zoom in too much i see blank tiles for basemap and sometimes for is more of an issue when i print large (24x36) PDF with preservescale = false.
Question is, how can i determine if a layer has tiles for a particular zoom level within a certain extent.
Something like: _layer.tileExist(_zoomLevel, _extent): returns true-false