CFLib.org – Common Function Library Project

Description:
Returns the date for the first day of the week for a passed in date object. Assumes Sunday as the first day of the week.

Return Values:
Returns a date.

Example:

<cfoutput>#firstDayOfWeek(now())#</cfoutput>

Parameters:

Full UDF Source:

<cfscript>
/**
 * Analogous to firstDayOfMonth() function.
 * 
 * @param date 	 Date object used to figure out week. (Required)
 * @return Returns a date. 
 * @author Pete Ruckelshaus (&#112;&#114;&#117;&#99;&#107;&#101;&#108;&#115;&#104;&#97;&#117;&#115;&#64;&#121;&#97;&#104;&#111;&#111;&#46;&#99;&#111;&#109;) 
 * @version 1, September 12, 2007 
 */
function firstDayOfWeek(date) {
	var dow = "";
	var dowMod = "";
	var dowMult = "";
	var firstDayOfWeek = "";
	date = trim(arguments.date);
	dow = dayOfWeek(date);
	dowMod = decrementValue(dow);
	dowMult = dowMod * -1;
	firstDayOfWeek = dateAdd("d", dowMult, date);
	
	return firstDayOfWeek;
}
</cfscript>