Mouse event and rest service

Question

HI All,

I saw this sample http://developers.arcgis.com/en/javascript/sandbox/sandbox.html?sample=fl_hover

here population is displayed when we mouse hover a south calorina state, if i want to display something onclick , then its not happening , please help me understand this.i added following code but still no help. require(["dojo/on", "esri/symbols/SimpleFillSymbol", "esri/symbols/SimpleLineSymbol", "dojo/_base/Color", "esri/graphic"], function(on, SimpleFillSymbol, SimpleLineSymbol, Color, Graphic) {
                    on(southCarolinaCounties, "click", function(evt) {
                        alert("graphics");
                        // clears current selection
                       
                        
                        // create new graphic with selected graphic's geometry
                        var graphic = new Graphic(evt.graphic.geometry);
                        
                        // create a new symbol for the graphic
                        var sfs = new SimpleFillSymbol(SimpleFillSymbol.STYLE_FORWARD_DIAGONAL, new SimpleLineSymbol(SimpleLineSymbol.STYLE_SOLID, new Color([255, 0, 0]), 2), new Color([255, 255, 0, 0.5]));
                        
                        // add symbol to the graphic
                        graphic.setSymbol(sfs);     
                        
                        // add the graphic to the map   
                        map.graphics.add(graphic);
                    });
                });

Do it depend on rest service that we are using whether we can add onclick funtionality or how does mous event work .Please guide.

ShreyasVakil · Answer

applying onclcik function to map object

This will apply onClick to the map, in simple words, if you click anywhere on the map the on click event will fire.applying onclick to featurelayer service

When you apply on click to a feature layer, it'll only fire when you click on any feature on the map.

vinayb · Answer

Great,

can you please tell me what is the difference in applying onclcik  function to map object and applying onclick to featurelayer service.

ShreyasVakil · Answer

Follow the code and see if this what you were looking for. Feature Layer - display results as an InfoWindow onHover

Hover over a county in South Carolina to get more information.

Do it depend on rest service that we are using whether we can add onclick funtionality or how does mous event work No it does not depend on the REST service. These are all client side events and does not rely on the service. Service is only responsible to supply us the data when requested.