How to fire the 'update-start' and 'update-end' events on graphics layer?

Question

Hi, I'm using esri ArcGIS JavaScript API V3.22 for our product and I'm trying to get the cost time for a graphics layer rendering after pan / zoom the map. I take a scripts and could not fire the events of 'update-start' and 'update-end' for a GraphicsLayer. How to fire these events on GraphicsLayer? Thanks, Leo <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <title>Graphics Layer Update Eventstitle> <link rel="stylesheet" href="https://js.arcgis.com/3.22/esri/css/esri.css"> <style> html, body { height: 100%; width: 100%; margin: 0; padding: 0; overflow: hidden; }; style> <script src="https://js.arcgis.com/3.22/">script> <script> var map; require([ "esri/map", "esri/Color", "esri/layers/GraphicsLayer", "esri/graphic", "esri/geometry/Extent", "esri/geometry/Point", "esri/symbols/SimpleMarkerSymbol", "dojo/domReady!" ], function(Map, Color, GraphicsLayer, Graphic, Extent, Point, SimpleMarkerSymbol){ var bounds = new Extent({ "xmin":-180, "ymin":0, "xmax":180, "ymax":80, "spatialReference":{"wkid":4326} }); map = new Map("map", { extent: bounds, logo: true }); map.setExtent(new Extent({ "xmin":-76.06032092393646, "ymin":42.00329938824891, "xmax":-75.70875842393646, "ymax":42.18164411481141, "spatialReference":{"wkid":4326} })); layer = new GraphicsLayer({id: "graphics layer"}); map.addLayer(layer); layer.on("update-start", function(){ // This is not triggered. console.log("update-start"); }); layer.on("update-end", function(){ // This is not triggered. console.log("update-end"); }); layer.on("update", function(){ console.log('update'); }); color = new Color([255,0,255,1]); for (var i = 0, length = 100; i<length; i++){ geometry = new Point([-75.923 + i * 0.001, 42.14 - i * 0.001]); symbol = new SimpleMarkerSymbol().setSize(8).setColor(color); graphic = new Graphic(geometry, symbol); layer.add(graphic); } }); script> head> <body> <div id="map" style="height:100%;"> div> body> html>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

RobertScheitlin__GISP · Accepted Answer

Leo,

A GraphicsLayer does not fire those events. You should use FeatureLayer instead from a FeatureCollection.

See this thread, where back in 2012 It was mention by an esri developer that subclasses of layer are responsible for calling those events:

https://community.esri.com/thread/99015