Javascript not accessing the view?

SteveBroyles — Tue, 08 Sep 2020 18:38:50 GMT

My app uses simple javascript to control basic map location, zoom, etc. This works fine with several map service providers but I'm having trouble with ArcGIS. It seems I can't access the view. I'm wondering if the 'require' is somehow involved or if it's some other a basic error. The code is loaded in a browser control but is unresponsive. Simply double clicking the html file displays the starting map as expected.

require(["esri/Map", "esri/views/MapView"], function (Map, MapView) {

var zoomlevel = 14;
var ready = false;

            var map = new Map({
                basemap: "topo"
            });

            var view = new MapView({
                container: "viewDiv", // Reference to the view div created below
                map: map, // Reference to the map object created before the view
                zoom: 14, // Sets zoom level based on level of detail
                center: [-78.25, 37.375], // Sets center point of view using longitude,latitude
                ui: { components: ["attribution"] } // exclude zoom widget from default ui
            });

            view.when(function () {
                // All the resources in the MapView and the map have loaded. Now execute additional processes
                ready = true;
            }, function (error) {
                // Error handling
            });

// Unresponsive methods

            function IsReady() {
                return ready;
            }

            function Up(ctrlkey) {
                if (zoomlevel > 9) zoomlevel = zoomlevel - 1; /* 9 to 18 */
                if (ctrlkey) {
                    if (zoomlevel > 9) zoomlevel = zoomlevel - 1;
                }
                view.zoom = zoomlevel;
            }

// Down

function GetRight() {

return view.extent.xmax;
}

//Left, etc.

function SnapTo(lat, lon) {

                view.center = [lon, lat];
            }
        });

</script>

Re: Javascript not accessing the view?

RobertScheitlin__GISP — Wed, 09 Sep 2020 12:40:02 GMT

Steve,

I see nothing wrong in the code portion you have provided. Can you provide a more complete sample the demonstrates your issue?

topic Re: Javascript not accessing the view? in ArcGIS JavaScript Maps SDK Questions

Javascript not accessing the view?

Re: Javascript not accessing the view?