var cities = new FeatureLayer( "http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StatesCitiesRivers_USA/MapServer/0", { mode: FeatureLayer.MODE_ONDEMAND, infoTemplate:templateCity, outFields: ["*"] });
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on(dom.byId('button'), 'click', function(){ cities.setInfoTemplate(null); })
on(dom.byId('button'), 'click', function(){ cities.setInfoTemplate(null); })