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What is the best way to test a feature service url and verify it is responding?

Question asked by c_sharp_dotnet on Sep 8, 2017
Latest reply on Sep 11, 2017 by kenbuja

Before I load and begin querying all the feature service layers in my map that I have created with the ArcGIS JavaScript API, I would like to first verify that the service is responding.  What I'm trying to accomplish is to check if any urls are not responding, and if so, skip those feature services and allow my application to keep loading without them. What is the best/recommended way to do this?