The Date object will do what you want – construct one for each date, then compare them using the >
, <
, <=
or >=
.
The ==
, !=
, ===
, and !==
operators require you to use date.getTime()
as in
var d1 = new Date(); var d2 = new Date(d1); var same = d1.getTime() === d2.getTime(); var notSame = d1.getTime() !== d2.getTime();
to be clear just checking for equality directly with the date objects won’t work
var d1 = new Date(); var d2 = new Date(d1); console.log(d1 == d2); // prints false (wrong!) console.log(d1 === d2); // prints false (wrong!) console.log(d1 != d2); // prints true (wrong!) console.log(d1 !== d2); // prints true (wrong!) console.log(d1.getTime() === d2.getTime()); // prints true (correct)
I suggest you use drop-downs or some similar constrained form of date entry rather than text boxes, though, lest you find yourself in input validation hell.
For the curious, date.getTime()
documentation:
Returns the numeric value of the specified date as the number of milliseconds since January 1, 1970, 00:00:00 UTC. (Negative values are returned for prior times.)