Input FileUpload files Property

var x = document.getElementById("myFile");
var txt = "";
if ('files' in x) {
  if (x.files.length == 0) {
    txt = "Select one or more files.";
  } else {
    for (var i = 0; i < x.files.length; i++) {
      txt += "<br><strong>" + (i+1) + ". file</strong><br>";
      var file = x.files[i];
      if ('name' in file) {
        txt += "name: " + file.name + "<br>";
      }
      if ('size' in file) {
        txt += "size: " + file.size + " bytes <br>";
      }
    }
  }
}
document.getElementById ("demo").innerHTML = txt;