<head>
<title>无标题文档</title>
<script language="javascript" type="text/javascript">
var currentmonth,currentday,currentweek
currentmonth=0
currentday=0
currentweek=0
function showToDay()
{
var Nowdate=new Date();
M=Number(Nowdate.getMonth())+1
return Nowdate.getFullYear()+"-"+M+"-"+Nowdate.getDate();
}
function showWeekFirstDay(cases)
{
switch (cases)
{
case "" :
var Nowdate=new Date();
var WeekFirstDay=new Date(Nowdate-(Nowdate.getDay()-1)*86400000);
return WeekFirstDay;
break;
case "n" :
var MonthFirstDay=showWeekLastDay("")
var WeekFirstDay=new Date((MonthFirstDay/1000+86400)*1000);
return WeekFirstDay;
break;
case "p" :
var WeekFirstDay=showWeekFirstDay("")
var WeekFirstDay=new Date(WeekFirstDay-86400000*7);
return WeekFirstDay;
break;
}
}
function showWeekLastDay(cases)
{
switch (cases)
{
case "" :
var Nowdate=new Date();
var WeekFirstDay=new Date(Nowdate-(Nowdate.getDay()-1)*86400000);
var WeekLastDay=new Date((WeekFirstDay/1000+6*86400)*1000);
return WeekLastDay;
break;
case "n" :
var MonthFirstDay=showWeekLastDay("")
var WeekLastDay=new Date((MonthFirstDay/1000+7*86400)*1000);
return WeekLastDay;
break;
case "p" :
var WeekFirstDay=showWeekFirstDay("")
var WeekLastDay=new Date(WeekFirstDay-86400000);
return WeekLastDay;
break;
}
}
function showMonthFirstDay(cases)
{
var Nowdate=new Date();
switch (cases)
{
case "" :
var MonthFirstDay=new Date(Nowdate.getFullYear(),Nowdate.getMonth(),1);
return MonthFirstDay;
break;
case "n" :
var MonthFirstDay=new Date(Nowdate.getFullYear(),Nowdate.getMonth()+1+currentmonth,1);
return MonthFirstDay;
break;
case "p" :
var MonthFirstDay=new Date(Nowdate.getFullYear(),Nowdate.getMonth()-1+currentmonth,1);
return MonthFirstDay;
break;
}
}
function showMonthLastDay(cases)
{
var Nowdate=new Date();
switch (cases)
{
case "" :
currentmonth=0;
currentday=0;
var MonthNextFirstDay=new Date(Nowdate.getFullYear(),Nowdate.getMonth()+1+currentmonth,1);
var MonthLastDay=new Date(MonthNextFirstDay-86400000);
return MonthLastDay;
break;
case "n" :
var MonthNextFirstDay=new Date(Nowdate.getFullYear(),Nowdate.getMonth()+2+currentmonth,1);
var MonthLastDay=new Date(MonthNextFirstDay-86400000);
return MonthLastDay;
break;
case "p" :
var MonthNextFirstDay=new Date(Nowdate.getFullYear(),Nowdate.getMonth()+currentmonth,1);
var MonthLastDay=new Date(MonthNextFirstDay-86400000);
return MonthLastDay;
break;
}
}
Date.prototype.toString = function ()
{
return this.getFullYear() + "-" + (this.getMonth()+1) + "-" + this.getDate();
}
function InputDate(s,StartTime,EndTime)
{
switch (s)
{
case 0 : //当天
document.getElementById(StartTime).value=showToDay();
document.getElementById(EndTime).value=showToDay();
break;
case 1 : //上周
document.getElementById(StartTime).value=showWeekFirstDay("p");
document.getElementById(EndTime).value=showWeekLastDay("p");
break;
case 2 : //本周
document.getElementById(StartTime).value=showWeekFirstDay("");
document.getElementById(EndTime).value=showWeekLastDay("");
break;
case 3 : //下周
document.getElementById(StartTime).value=showWeekFirstDay("n");
document.getElementById(EndTime).value=showWeekLastDay("n");
break;
case 4 : //上月
document.getElementById(StartTime).value=showMonthFirstDay("p");
document.getElementById(EndTime).value=showMonthLastDay("p");
break;
case 5 : //本月
document.getElementById(StartTime).value=showMonthFirstDay("");
document.getElementById(EndTime).value=showMonthLastDay("");
break;
case 6 : //下月
document.getElementById(StartTime).value=showMonthFirstDay("n");
document.getElementById(EndTime).value=showMonthLastDay("n");
break;
case 99 : //清空
document.getElementById(StartTime).value="";
document.getElementById(EndTime).value="";
break;
default :
alert("未知的参数");
}
}
</script>
</head>
<body>
<input name="StartTime" type="text" id="StartTime">
<input name="EndTime" type="text" id="EndTime">
<br>
<br>
<input type="button" name="Submit" value="上月" onclick="javascript:InputDate(4,'StartTime','EndTime');currentmonth--;">
<input type="button" name="Submit" value="本月" onclick="javascript:InputDate(5,'StartTime','EndTime');">
<input type="button" name="Submit" value="下月" onclick="javascript:InputDate(6,'StartTime','EndTime');currentmonth++;">
<br>
<br>
<input type="button" name="Submit" value="上周" onclick="javascript:InputDate(1,'StartTime','EndTime');">
<input type="button" name="Submit" value="本周" onclick="javascript:InputDate(2,'StartTime','EndTime');">
<input type="button" name="Submit" value="下周" onclick="javascript:InputDate(3,'StartTime','EndTime');">
</body>
</html>
