1 /**Parses string formatted as YYYY-MM-DD to a Date object.
 2   * If the supplied string does not match the format, an
 3   * invalid Date (value NaN) is returned.
 4   * @param {string} dateStringInRange format YYYY-MM-DD, with year in
 5   * range of 0000-9999, inclusive.
 6   * @return {Date} Date object representing the string.
 7   */
 8  function parseISO8601(dateStringInRange) {
 9    var isoExp = /^\s*(\d{4})-(\d\d)-(\d\d)\s*$/,
10        date = new Date(NaN), month,
11        parts = isoExp.exec(dateStringInRange);
12  
13    if(parts) {
14      month = +parts[2];
15      date.setFullYear(parts[1], month - 1, parts[3]);
16      if(month != date.getMonth() + 1) {
17        date.setTime(NaN);
18      }
19    }
20    return date;
21  }