Getting error when using buildLayerList function.

[ManjariGoyal]

Hi,

I am trying to create layer list but it doesn't show when running in the JavaScript. I am not sure what is missing here. Below is the code I am using.

var FiberInfoTemplate = new InfoTemplate();

                FiberInfoTemplate.setTitle("<b>Fiber Provider</b>");

                var Fiber1InfoTemplate = new InfoTemplate();

                Fiber1InfoTemplate.setTitle("<b>Fiber Provider</b>");

                var Fiber2InfoTemplate = new InfoTemplate();

                Fiber2InfoTemplate.setTitle("<b>Fiber Provider</b>");

                FiberInfoTemplate.setContent("PROVIDER: ${PROVIDER}<br/>");

                Fiber1InfoTemplate.setContent("PROVIDER: ${PROVIDER}<br/>");

                Fiber2InfoTemplate.setContent("PROVIDER: ${PROVIDER}<br/>");

                var FiberLayerURL = "https://corp.abc.com/network/rest/services/AMTools/Fiber/MapServer";

                var FiberLayerOptions = {

                    "id": "demographicsLayer",

                        "opacity": 0.75,

                        "showAttribution": false

                };

               var FiberLayer = new ArcGISDynamicMapServiceLayer(FiberLayerURL, FiberLayerOptions);

                FiberLayer.setInfoTemplates({

                0: { infoTemplate: FiberInfoTemplate },

                1: { infoTemplate: Fiber1InfoTemplate },

                2: {infoTemplate: Fiber2InfoTemplate}

                });

                //1 and 5 are the layer id number.

                //FiberLayer.setVisibleLayers([0, 1, 2]);

                //map.addLayer(FiberLayer);

                FiberLayer.on("load", buildLayerList);

                map.addLayer(FiberLayer);

                function buildLayerList() {

                    var items = arrayUtils.map(Fiberlayer.layerInfos, function(info, index) {

                    if (info.defaultVisibility) {

                        visible.push(info.id);

                    }

                    return "<input type='checkbox' class='list_item'" + (info.defaultVisibility ? "checked=checked" : "") + "' id='" + info.id + "'' /><label for='" + info.id + "'>" + info.name + "</label>";

          });

                    var ll = dom.byId("layer_list");

                    ll.innerHTML = items.join(' ');

                    Fiberlayer.setVisibleLayers(visible);

                    on(ll, "click", updateLayerVisibility);

                    }

                function updateLayerVisibility() {

                    var inputs = query(".list_item");

                    var input;

                    visible = [];

                    arrayUtils.forEach(inputs, function(input) {

                    if (input.checked) {

                    visible.push(input.id);

                    }

                    });

                    //if there aren't any layers visible set the array to be -1

                    if (visible.length === 0) {

                    visible.push(-1);

                    }

                    Fiberlayer.setVisibleLayers(visible);

                    }