get Height / Width of image in JavaScript

Get image dimensions(Height Width)

var imageVal = urlVal+'/images/articulos-nuevo/'+siteVal+'/'+codigoAlfa+'/1-Z.jpg';
								
								var img = new Image();
								img.onload = function(){
									  var height = img.height;
									  var width = img.width;
									 console.log("::: height "+height);	
									 console.log("::: width "+width);
									}
								img.src = imageVal;