You could try something like this to get you started:
require(['dojo/_base/declare', 'dojo/_base/lang', 'dojo/_base/array'], function (declare, lang, array) {
var Blinker = declare(null, {
constructor: function (graphics, interval) {
this.graphics = graphics || [];
this.interval = interval || 1000;
},
_interval: null,
blink: function () {
array.forEach(this.graphics, function (graphic) {
return graphic.visible ? graphic.hide() : graphic.show();
});
},
start: function () {
this._interval = setInterval(lang.hitch(this, 'blink'), this.interval);
return this;
},
stop: function () {
return this._interval && clearInterval(this._interval);
}
});
/**
*
* @param {FeatureLayer} layer feature layer whos selection should be blinking
* @param {Number} [interval] millisecond delay for blink
* @example
* // start blinking
* var blinker = Blinker.blinkSelectedFeatures(myFeatureLayer, 2000);
*
* // stop blinking
* blinker.stop();
* @returns {*}
*/
Blinker.blinkSelectedFeatures = function (/* FeatureLayer */ layer,/* number */ interval) {
return new Blinker(layer.getSelectedFeatures(), interval).start(); // Blinker
};
});
