ArcGIS API for JavaScript ^3.26

This snippet requires setting up a proxy page

require([
  "esri/layers/WMSLayer", ... 
], function(WMSLayer, ... ) {
  var wmsLayer = new WMSLayer(wmsURL); 
  ...
});

This snippet specifies the resourceInfo option which does not require proxy page.

require(["esri/map", "esri/geometry/Extent", "esri/layers/WMSLayer", 
  "esri/layers/WMSLayerInfo", "dojo/domReady!"], 
  function (Map, Extent, WMSLayer, WMSLayerInfo){
    var map = new Map("map", {
      basemap: "streets",
      center: [21.84, -2.84],
      zoom: 5
    });

    var wmsLayer = new WMSLayer("http://host/geoserver/wms", {
      format: "png",
      resourceInfo: {
        copyright: "GeoServer",
        description: "Africa Wind Data",
        extent: new Extent(-180, -90, 180, 90, {wkid: 4326}),
        featureInfoFormat: "text/html",
        getFeatureInfoURL: "http://host/geoserver/ows",
        getMapURL: "http://host/geoserver/ows",
        layerInfos: [
          new WMSLayerInfo({
            name: "AFG_Wind:AFG_WindGenAnnualEnergy",
            title: "Mean annual generalized wind power density",
            queryable: true,
            showPopup: true
          })
        ],
        spatialReferences: [3857, ..., 42303],
        version: "1.3.0"
      },
      version: "1.3.0",
      visibleLayers: [
        "AFG_Wind:AFG_WindGenAnnualEnergy"
      ]
    });

    wmsLayer.on("error", function (response){
      console.log("Error: %s", response.error.message);
    });
    map.addLayer(wmsLayer);
  });

"customLayerParameters" : {
  "styles": "pointsymbolizer", 
  "SLD": "https://.../point_pointSymbolizer.xml"
}

"customParameters" : {"key": "1R-ADNF-6NCD"}

• Setting the layer ID in the layer constructor.

  require([
    "esri/layers/ArcGISDynamicMapServiceLayer", ... 
  ], function(ArcGISDynamicMapServiceLayer, ... ) {
    var population = new ArcGISDynamicMapServiceLayer("http://myserver/arcgis/rest/population/MapServer/Layers", {id:"population"});
    ...
  });
  

• Setting the layer ID after a layer is initialized.

  population.id = "population";
  

• Retrieving the layer ID.

  function getMapLayers() {
    for (var j=0, jl=map.layerIds.length; j<jl; j++) {
      var currentLayer = map.getLayer(map.layerIds[j]);
      alert("id: " + currentLayer.id);
    }
  }
  

require([
  "dojo/_base/array", ...
], function(array, ... ){
  array.forEach(wmsLayer.layerInfos, function(layerInfo) {
    console.log(layerInfo.title);
  });
});

wmsLayer.setImageFormat("jpg");

wmsLayer.setImageTransparency(true);

layer.setOpacity(0.5);

wmsLayer.setVisibleLayers(["0","1"]);