8.8.6 LayerList component

The LayerList widget (covered earlier in the lesson) is not labeled as deprecated in the SDK documentation (as of Jul 2025).  Presumably that means the LayerList component lacks some important functionality.  In any case, the example below shows the component embedded within an Expand component, like the BasemapGallery example earlier.  One attribute you might consider setting is visibility-appearance, which allows for showing the user checkboxes for toggling layer visibility rather than the default eyeball icon.

See the Pen LayerList_component by Jim Detwiler (@jimdetwiler) on CodePen.