Pure JavaScript Date Functions

These functions are very useful when dealing with any type of date fields. They use the same format strings as the java.text.SimpleDateFormat class, with a few minor exceptions.

Functions include:

• isDate() - Check if a date is valid
• compareDates() - See if one date is greater than another
• formatDate() - Output a Date() object in any format
• getDateFromFormat() - Parse a date string and return time in ms representing date object