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I'm curious if anyone has any good solutions for accurately building dates prior to the year 1000 A.D. - particularly the years 1 - 100 AD.
For example, if I want to build a date for the start of the 1st millenium, I can't just do...
new Date(Date.UTC(1,0,1,0,0,0,0));
because it tries to be "smart" and assume that 1 is 1901, which gives me...
Sun Dec 31 1900 18:00:00 GMT-0600 (CST)
The same thing goes for the year 99...
new Date(Date.UTC(99,0,1,0,0,0,0));
which becomes
Thu Dec 31 1998 18:00:00 GMT-0600 (CST)
Thoughts?
890
The date and time is broken up and printed in a way that we can understand as humans. JavaScript, however, understands the date based on a timestamp derived from Unix time, which is a value consisting of the number of milliseconds that have passed since midnight on January 1st, 1970.
To check if a date is before another date, compare the Date objects, e.g. date1 < date2 . If the comparison returns true , then the first date is before the second, otherwise the first date is equal to or comes after the second.
i prefer:
var d = new Date(Date.UTC(year, month, day, hour, min, sec, 0));
d.setUTCFullYear(year);
this always works for all supported year values.
the setUTCFullYear() call fixes JavaScript's intentional bug if you ask me.
96
Have you tried using the setUTC... functions on a date object after its creation?
setUTCDate()
setUTCFullYear()
setUTCMonth()
setUTCHours()
setUTCMinutes()
setUTCSeconds()
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