Compare two dates with JavaScript - Stack Overflow
The easiest way to compare dates in javascript is to first convert it to a Date object and then compare these date-objects.
Below you find an object with three functions:
dates.compare(a,b)
Returns a number:
- -1 if a < b
- 0 if a = b
- 1 if a > b
- NaN if a or b is an illegal date
dates.inRange (d,start,end)
Returns a boolean or NaN:
- true if d is between the start and end (inclusive)
- false if d is before start or after end.
- NaN if one or more of the dates are illegal.
dates.convert
Used by the other functions to convert their input to a date object. The input can be
- a date-object : The input is returned as is.
- an array: Interpreted as [year,month,day]. NOTE month is 0-11.
- a number : Interpreted as number of milliseconds since 1 Jan 1970 (a timestamp)
- a string : Several different formats is supported, like "YYYY/MM/DD", "MM/DD/YYYY", "Jan 31 2009" etc.
- an object: Interpreted as an object with year, month and date attributes. NOTE month is 0-11.
