Getting Working Days Using Javascript

Question

I'm trying to get the working days between two date. Example: stdate = 28/10/2011 and endate = 04/11/2011. This should be 6 working days, but its only giving 5 days.

var workingdays = 0;
var weekday     = new Array(7);
weekday[0]="Sunday";
weekday[1]="Monday";
weekday[2]="Tuesday";
weekday[3]="Wednesday";
weekday[4]="Thursday";
weekday[5]="Friday";
weekday[6]="Saturday";

while (stdate <= endate) 
{
    var day = weekday[stdate.getDay()];
    if(day != "Saturday" && day != "Sunday") 
    {
        workingdays++; 
    }
    console.log(weekday[stdate.getDay()]);
    stdate = new Date(stdate.getTime() + 86400000); 
}

The console log shows the results below.

Friday
Saturday
Sunday
Sunday
Monday
Tuesday
Wednesday
Thursday

Sunday shows twice for some reason. Any help would be appreciated.

Answer 1

Here you go:

 function getWorkingDays(startDate, endDate){
     var result = 0;

    var currentDate = startDate;
    while (currentDate <= endDate)  {  

        var weekDay = currentDate.getDay();
        if(weekDay != 0 && weekDay != 6)
            result++;

         currentDate.setDate(currentDate.getDate()+1); 
    }

    return result;
 }

 var begin = new Date(2011, 09, 8);
 var end = new Date(2011, 09, 25);
 alert(getWorkingDays(begin, end)); // result = 12 days

Keep in mind that the month indication for the two variables is zero based. So in my example we are looking at october (month 10).