How do I evaluate a layer name?

ChrisSergent

I have the following code that defines my feature layers, but I would like to evaluate the layer name to ensure that the numbered layer is the correct feature that I am referencing on the chance layers are added. How would I do this?

var initialExtent = new Extent({
        "xmin": 777229.03,
        "ymin": 1133467.92,
        "xmax": 848340.14,
        "ymax": 1185634.58,
        "spatialReference": {
            "wkid": 3435
        }
    });
    // app configuration  
    var config = {


        mapOptions: {
            showAttribution: false,
            sliderStyle: "small",
            extent: initialExtent,
            logo: false,
            sliderPosition: "bottom-right"
        },


        signLayerUrl: "http://maps.decaturil.gov/arcgis/rest/services/test/StreetSignTest/FeatureServer/0",
        
        supportLayerUrl: "http://maps.decaturil.gov/arcgis/rest/services/test/StreetSignTest/FeatureServer/1"


    };

I tried doing the following:

var featureService = new FeatureLayer("http://maps.decaturil.gov/arcgis/rest/services/test/StreetSignTest/FeatureServer");

alert(featureService.LayerInfo[0].name);

And receive the following error:

ypeError: Cannot read property '0' of undefined

"in domReady callback"

"TypeError: Cannot read property '0' of undefined

I thought that this would provide me with the name of  the first layer, but I am receiving an error instead. How should I write this?

And I referenced this, but there are no examples: LayerInfo | API Reference | ArcGIS API for JavaScript

RobertScheitlin__GISP

Chris,

  Do you mean work with the raw layer json?

        var requestHandle = esriRequest({
          url: "http://maps.decaturil.gov/arcgis/rest/services/test/StreetSignTest/FeatureServer/0",
          content: {
            f: 'json'
          },
          handleAs: "json"
        });

        requestHandle.then(function(lyrJSON, io){
          console.info(lyrJSON.name);
        }