Dynamic Text for Story Map example

dynText.js

require(
  ["esri/tasks/query", "esri/tasks/QueryTask", "dojo/query", "dojo/NodeList-html"],
  function(Query, QTask, dQuery){
    var config = {
			url: <LAYER URL>
			query: "1=1",
			fields: [<STAT FIELD(s)>],
			dynTextMapping: {
				statement: {
					field: "datetext",
					method:"FIRST",
					target: "#REPLACE_ME"
				}
			},
		};
		var q = new Query();
		q.where = config.query;
		q.outFields = config.fields;
		q.returnGeometry = false;
		var qt = new QTask(config.url);
		qt.execute(q, function(fSet){
			var dataSet = fSet.features.map(function(obj){
				return obj.attributes;
			});
			for (var key in config.dynTextMapping) {
				if (!config.dynTextMapping.hasOwnProperty(key)) continue;
				var thisAttrSpec = config.dynTextMapping[key];
				var thisText = "";
				switch (thisAttrSpec.method) {
					case "FIRST":
						thisText = dataSet[0][thisAttrSpec.field];
						break;
					case "SUM":
						break;
					case "AVERAGE":
						break;
					default:
						break;
				}
				var tNode = dQuery(thisAttrSpec.target).html(thisText);
			}
		});
   }
);