Converting From A String To A Date; Date Arithmetic - Adobe 12001196 - Acrobat - Mac Manual

Converting from a string to a date

To convert a string into a Date object the
format string that it uses as a hint as to the order of the year, month, and day in the input
string.
/* Example of util.scand */
/* Create some strings containing the same date in differing formats. */
var s1 = "03/12/97";
var s2 = "80/06/01";
var s3 = "December 6, 1948";
var s4 = "Saturday 04/11/76";
var s5 = "Tue. 02/01/30";
var s6 = "Friday, Jan. the 15th, 1999";
/* Convert the strings into Date objects using util.scand */
var d1 = util.scand("mm/dd/yy", s1);
var d2 = util.scand("yy/mm/dd", s2);
var d3 = util.scand("mmmm dd, yyyy", s3);
var d4 = util.scand("mm/dd/yy", s4);
var d5 = util.scand("yy/mm/dd", s5);
var d6 = util.scand("mmmm dd, yyyy", s6);
/* Print the dates to the console using util.printd */
console.println(util.printd("mm/dd/yyyy", d1));
console.println(util.printd("mm/dd/yyyy", d2));
console.println(util.printd("mm/dd/yyyy", d3));
console.println(util.printd("mm/dd/yyyy", d4));
console.println(util.printd("mm/dd/yyyy", d5));
console.println(util.printd("mm/dd/yyyy", d6));
The output of this script would look like:
03/12/1997
06/01/1980
12/06/1948
04/11/1976
01/30/2002
01/15/1999
Unlike the date constructor (new Date(...)),
passed to it.
N
O T E

Date arithmetic

It is often useful to do arithmetic on dates to determine things like the time interval
between two dates or what the date will be several days or weeks in the future. The
JavaScript Date object provides several ways to do this. The simplest and possibly most
easily understood method is by manipulating dates in terms of their numeric
Acrobat JavaScript Scripting Guide
Given a two digit year for input,
:
is less than 50 then it is assumed to be in the 21st century (i.e. add 2000), if it is
greater than or equal to 50 then it is in the 20th century (add 1900). This heuristic is
often known as the Date Horizon.
A Short Acrobat JavaScript FAQ
of the Util Object
scand
is rather forgiving in terms of the string
scand
resolves the ambiguity as follows: if the year
scand
How do I use date objects?
is used. It accepts a
A
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