javascript - 三级联动的日期下拉框

王朝html/css/js·作者佚名  2004-07-27
窄屏简体版  字體: |||超大  

<html>

<head>

<title>年月日三下拉框联动</title>

<meta http-equiv='Content-Type' content='text/html; charset=gb2312'>

<meta name='author' content='F.R.Huang(meizz梅花雨)//www.meizz.com'>

</head>

<body onload="YYYYMMDDstart(document.form1,document.form1.SYear,document.form1.SMonth,document.form1.SDay),YYYYMMDDstart(document.form1,document.form1.EYear,document.form1.EMonth,document.form1.EDay)">

<form name=form1>

起始时间:

<select name=SYear onchange="YYYYDD(this.value,document.form1.SMonth,document.form1.SDay)">

<option value="">年</option>

</select>年

<select name=SMonth onchange="MMDD(this.value,document.form1.SYear,document.form1.SDay)">

<option value="">月</option>

</select>月

<select name=SDay>

<option value="">日</option>

</select>日<br><br>

完成时间:

<select name=EYear onchange="YYYYDD(this.value,document.form1.EMonth,document.form1.EDay)">

<option value="">年</option>

</select>年

<select name=EMonth onchange="MMDD(this.value,document.form1.EYear,document.form1.EDay)">

<option value="">月</option>

</select>月

<select name=EDay>

<option value="">日</option>

</select>日  

</form>

<script language="JavaScript"><!--

function YYYYMMDDstart(form,year,month,day)

{

MonHead = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];

//先给年下拉框赋内容

var y = new Date().getFullYear();

for (var i = (y-3); i < (y+5); i++) //以今年为准,前30年,后30年

year.options.add(new Option(i,i));

//赋月份的下拉框

for (var i = 1; i < 13; i++)

month.options.add(new Option(i,i));

year.value = y;

month.value = new Date().getMonth() + 1;

var n = MonHead[new Date().getMonth()];

if (new Date().getMonth() ==1 && IsPinYear(year.options[year.selectedIndex].value)) n++;

writeDay(n,day); //赋日期下拉框Author:meizz

day.value = new Date().getDate();

}

function YYYYDD(str,month,day) //年发生变化时日期发生变化(主要是判断闰平年)

{

var MMvalue = month.options[month.selectedIndex].value;

if (MMvalue == "" ){ var e = day; optionsClear(e); return;}

var n = MonHead[MMvalue - 1];

if (MMvalue ==2 && IsPinYear(str)) n++;

writeDay(n,day)

}

function MMDD(str,year,day) //月发生变化时日期联动

{

var YYYYvalue = year.options[year.selectedIndex].value;

if (YYYYvalue == "" ){ var e = day; optionsClear(e); return;}

var n = MonHead[str - 1];

if (str ==2 && IsPinYear(YYYYvalue)) n++;

writeDay(n,day)

}

function writeDay(n,day) //据条件写日期的下拉框

{

var e = day; optionsClear(e);

for (var i=1; i<(n+1); i++)

e.options.add(new Option(i,i));

}

function IsPinYear(year)//判断是否闰平年

{ return(0 == year%4 && (year%100 !=0 || year%400 == 0));}

function optionsClear(e)

{

for (var i=e.options.length; i>0; i--)

e.remove(i);

}

function compDate(SY,SM,SD,EY,EM,ED)

{

}

//--></script>

</body>

</html>

 
 
 
免责声明:本文为网络用户发布,其观点仅代表作者个人观点,与本站无关,本站仅提供信息存储服务。文中陈述内容未经本站证实,其真实性、完整性、及时性本站不作任何保证或承诺,请读者仅作参考,并请自行核实相关内容。
 
 
© 2005- 王朝網路 版權所有 導航