var notYetLoaded = true;

     var heading1 =  document.getElementById("heading");

     var heading2 =  document.getElementById("heading2");

​

   function isPortrait(src, elem){

     var is  =  tryLoadImage(src);

​

      // use the "is" boolean here

​

     elem.innerHTML = "is it Portrait ? " + is;

     }

​

​

     function tryLoadImage(src) {

      var is = false;

     var img = new Image();

     img.src = src;

       var myWaiting = setInterval(function(){

         console.log("waiting");

         img.onload = function() {

​

        alert(img.width+"x"+img.height);

        if(img.height>img.width)

        {

           is= true;

        }  

        clearInterval(myWaiting);

         };

     }, 1000);

return true;

​

​

     }

​

​

    isPortrait("http://cdn.wonderfulengineering.com/wp-content/uploads/2014/07/Landscape-pictures-26-798x350.jpg", heading1);

​

    isPortrait("http://upload.wikimedia.org/wikipedia/commons/thumb/b/bd/Dts_news_bill_gates_wikipedia.JPG/440px-Dts_news_bill_gates_wikipedia.JPG", heading2);

​

​