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$('#image-chooser').change(function (e) {
  var file = e.target.files||e.dataTransfer.files;
  if (file[0]) {
    var reader = new FileReader();
    reader.onload = function () {
      $('#chosenImage').attr("src", this.result).show();
    };
    reader.readAsDataURL(file[0]);
  } else {
    $('#chosenImage').attr("src", "").hide();
  }
});