<%'每天是星期几
Function DayWeek(Yeari,Monthi,Dayi)
Dim Days
Days=0
Dim yi,mi
'年
For yi=2001 to Yeari-1
if yi mod 4=0 then
if yi mod 100=0 then
if yi mod 1000=0 then
Days=Days+366
else
Days=Days+365
end if
else
Days=Days+366
end if
else
Days=Days+365
end if
Next
'月
For mi=1 to Monthi-1
Days=Days+MonthDays(Yeari,mi)
Next
Days=Days+Dayi
DayWeek=Days mod 7
End Function%>
Function DayWeek(Yeari,Monthi,Dayi)
Dim Days
Days=0
Dim yi,mi
'年
For yi=2001 to Yeari-1
if yi mod 4=0 then
if yi mod 100=0 then
if yi mod 1000=0 then
Days=Days+366
else
Days=Days+365
end if
else
Days=Days+366
end if
else
Days=Days+365
end if
Next
'月
For mi=1 to Monthi-1
Days=Days+MonthDays(Yeari,mi)
Next
Days=Days+Dayi
DayWeek=Days mod 7
End Function%>
var dt = new Date()
var y= dt.getYear()
var start = "1/1/"+ y
start = new Date(start)
starts = start.valueOf()
startweek = start.getDay()
dtweek = dt.getDay()
var days = Math.round((dt.valueOf()- start.valueOf())/(24*60*60*1000))-(7-startweek) - dt.getDay()-1
days = Math.floor(days/7)
alert(days+2)
</script>
周日做为下周的开始计算