How to get the modified time of a file being uploaded in JavaScript?

Question

Is there ever a way possible to get the actual creation / modification time of the file being uploaded, using JavaScript?

As for PHP, using filectime() a

Answer 1

Perhaps you could use javascript to get the last modified time, then use that in some other javacript to sort on that. This time will be in GMT.

var xmlhttp = createXMLHTTPObject();
xmlhttp.open("HEAD", "http://myurl/interesting_image.jpg" ,true);
xmlhttp.onreadystatechange=function() {
  if (xmlhttp.readyState==4) {
    alert("Last modified: "+
     var lastModTimeForInterestingImage = xmlhttp.getResponseHeader("Last-Modified"))
  }
}
xmlhttp.send(null);