Take a date string and return it in a certain format.

formatDate.js

function pad(num) {
    return (num < 10 ? '0' : '') + num;
}

function formatDateMonthDayYear(date) {
    if (date) {
        date = new Date(date);
    } else {
        date = new Date();
    }
    return pad(date.getMonth() + 1) +
        '/' + pad(date.getUTCDate()) +
        '/' + date.getFullYear();
}

function toISOString(date) {
    if (date) {
        date = new Date(date);
    } else {
        date = new Date();
    }
    return date.getFullYear() +
      '-' + pad(date.getMonth() + 1) +
      '-' + pad(date.getDate()) +
      'T' + pad(date.getHours()) +
      ':' + pad(date.getMinutes()) +
      ':' + pad(date.getSeconds());
}