title: __doPostBack not firing in ie11 but firing in chrome
body: <p>my task is export div contents to image 
  i am using this script </p>
  
  <pre><code>function ConvertToImage(btnExport) {
      html2canvas($("#&lt;%=exportimage.ClientID %&gt;")[0]).then(function (canvas) {
        var base64 = canvas.toDataURL();
        $("[id*=hfImageData]").val(base64);
        __doPostBack(btnExport.name, "");
      });
      return false;
  }
  </code></pre>
  
  <p>__doPostBack not firing in ie11 but its working in chrome. plz suggest how can i fix postback in ie 11</p>