Snap existing geometry(roads) while digitizing graphics

Discussion created by malleshamm on Dec 1, 2010
Hello all,
I am working with Javascript API application and Arcgis server 9.3 service , I have to develop a functionality to trace the existing route. That is, I got struck at snapping existing geometry(road) while digitizing graphics. Could anyone have any idea that how to snap existing service geometry with Javascript(API), appreciate your help.