function TextRangeToArray(range_text) {

  var result = [];
  var working_array = range_text.split("-");
  var start_at = parseInt(working_array[0]);
  var end_at = parseInt(working_array[1]);

  if (!(isNaN(start_at) || isNaN(end_at)) && start_at < end_at) {
    while (start_at <= end_at) {
      result.push(start_at);
      start_at++;
    }
  } else {
    //Not a valid range.
    result = false;
  }

  return result;

}

console.log(TextRangeToArray("1-9"));
console.log(TextRangeToArray("a-9"));
console.log(TextRangeToArray("2-1"));
console.log(TextRangeToArray("19-54"));