Hello all!

I am attempting to add a layer via a URL that the user provides via a text box in the UI. 

I can capture the layer URL and work with it in JS, but when I attempt to use it to create a layer, I get the following error in the console "Uncaught TypeError: a.hasChildNodes is not a function"

Here is the JS code that attempts to use the entered URL to create a new Dynamic Map Service Layer:

NOTE: The URL I have been working with is: nowcoast/mapoverlays_political (MapServer) 

        var layerURLbox = registry.byId("LayerURLbox");
        on(dom.byId("layerSubmit"), "click", getValue);

        function getValue() {
            console.log(layerURLbox.get("value"));
            layerValue = layerURLbox.get("value")
            getLayerType(layerValue);
        }

        function getLayerType(layerURLValue) {

            if (layerURLValue.indexOf("MapServer")) {
                console.log("Map Service");
                var layer = new ArcGISDynamicMapServiceLayer(layerURLValue, {
                    id: "Test"
                })
                map.addLayer(layer);
            }

The console error I mentioned occurs on line 14, where I attempt to create the new ArcGISDynamicMapServiceLayer.

It does not make it to map.addLayer.

If anyone has any pointers or has tried this before, please let me know!

Thank you!

Chris