Set Extent of Map from Value in Database Table

KeithAnderson

Folks

Please look at the example below. I am adding a map but would like to pass in the extent from an outside source...either a URL parameter or a QueryTask from a table. It seems that the order of operation for JavaScript is stumping me. The map requires the extent info prior to querying the extent. Please show me how to proceed. Thank you.

Keith

OrderOfOperation.txt.zip

Survey123_Error_Inbox.png

JohnKellyNeedsGISHelp_1-1736436636686.png

ReneWoy

I think the problem is, the result is a string, not a array

that should work:

map = new Map("map", {
                basemap: "topo",
                center: JSON.parse(cityextent), // longitude, latitude
                zoom: 13
            });

if you want to be sure use a callback:

require(["esri/map", "dojo/Deferred", "dojo/domReady!"], function (Map, Deferred) {
            GetUrlValue('extent').then(function (centerPoint) {
                console.info(centerPoint);
                map = new Map("map", {
                    basemap: "topo",
                    center: JSON.parse(centerPoint),
                    zoom: 13
                });
            });

            function GetUrlValue(VarSearch) {
                var deferred = new Deferred();
                var SearchString = window.location.search.substring(1);
                var VariableArray = SearchString.split('&');
                for (var i = 0; i < VariableArray.length; i++) {
                    var KeyValuePair = VariableArray.split('=');
                    if (KeyValuePair[0] == VarSearch) {
                        deferred.resolve(KeyValuePair[1]);
                    }
                    return deferred.promise;
                }
            }
        });