topic Re: How Do I Identify The Name of a Layer ID in ArcGIS JavaScript Maps SDK Questions

How Do I Identify The Name of a Layer ID

ChrisSergent — Mon, 23 Jan 2012 21:06:00 GMT

I want to evaluate the name of a layer like I did in the Web ADF, but I can't seem to find code similar to that?

Here is a URL with a screen recording of my question:

http://youtu.be/WkR4VBjx2_s

Thanks again.

Chris S.

Re: How Do I Identify The Name of a Layer ID

derekswingley1 — Mon, 23 Jan 2012 21:26:55 GMT

If you're setting up a query task against a layer that's in a map service you've already added to your JS API map, you can use the map service's layerInfos to loop through and match a name to an id.

Otherwise, use esri.request() to make a call to your map service endpoint. The JSON that comes back will have a layers property. Layers is an array of objects where each object corresponds to a layer in the map service. Every layer object will have an id and a name.

And thank you for the video- wish more people would do that :).

Re: How Do I Identify The Name of a Layer ID

ChrisSergent — Fri, 27 Jan 2012 20:04:37 GMT

If you're setting up a query task against a layer that's in a map service you've already added to your JS API map, you can use the map service's layerInfos to loop through and match a name to an id.

Otherwise, use esri.request() to make a call to your map service endpoint. The JSON that comes back will have a layers property. Layers is an array of objects where each object corresponds to a layer in the map service. Every layer object will have an id and a name.

And thank you for the video- wish more people would do that :).

Thanks Derek. This works.

Here is a line of code with my alert: alert(dynamicMapServiceLayer.layerInfos[4].name);

I have found videos to save time in explaining. 😄

Re: How Do I Identify The Name of a Layer ID

derekswingley1 — Fri, 27 Jan 2012 22:20:58 GMT

I have found videos to save time in explaining. 😄

Indeed they do!

Glad I could help.