startOfMonth

Description

Returns a date set on the first day of the month for the given date. Also sets hours/minutes/seconds to 0.

Parameters

Return Type

Date

Example

function startOfMonthToDesc(date d){
    desc += "Start of month for date " + d + " is " + startOfMonth(d) + "\n";
}

desc = "";
startOfMonthToDesc("2013-01-26 20:19:18");
startOfMonthToDesc("2013-02-01 20:19:18");
startOfMonthToDesc("2013-02-28 20:19:18");
startOfMonthToDesc("2012-02-29 20:19:18");
startOfMonthToDesc("2012-12-31 23:59:59");
startOfMonthToDesc("2012-12-01 23:59:59");
startOfMonthToDesc("2012-12-01 00:00:00");

Outputs to description:

Start of month for date 2013-01-26 20:19:18 is 2013-01-01 00:00:00

Start of month for date 2013-02-01 20:19:18 is 2013-02-01 00:00:00

Start of month for date 2013-02-28 20:19:18 is 2013-02-01 00:00:00

Start of month for date 2012-02-29 20:19:18 is 2012-02-01 00:00:00

Start of month for date 2012-12-31 23:59:59 is 2012-12-01 00:00:00

Start of month for date 2012-12-01 23:59:59 is 2012-12-01 00:00:00

Start of month for date 2012-12-01 00:00:00 is 2012-12-01 00:00:00

See also