Have you looked at http://esri.github.io/esri-leaflet/api-reference/tasks/query.html ?
My example was in Leaflet, In ArcGIS JS, you could basically do the same thing.
Get the map extent on change and then query the feature layers. This code may help.
require([
"esri/tasks/query", "esri/layers/FeatureLayer", ...
], function(Query, FeatureLayer, ... ) {
var query = new Query();
var featureLayer = new FeatureLayer( ... );
query.geometry = feature.geometry; /////////////////////////////////////////Plug in current map extent
featureLayer.selectFeatures(query,FeatureLayer.SELECTION_NEW);
...
});
////////////////////////////////////////////////
require(["esri/map"], function(Map) {
var map = new Map( ... );
map.on("extent-change", function(){
var geo = map.geographicExtent; /////////////Plug this into the query?
console.log(geo.xmin, geo.ymin, geo.xmax, geo.ymax);
});
...
});
