var inner = "<div id='chart1div'></div>"
+"2012年" + "<select id='month'>"
+ "<option value='01'>01</option>"
+ "<option value='02'>02</option>"
+ "<option value='03'>03</option>"
................................
+ "<option value='12'>12</option>" + "</select>月"原先是这样做的，现在想用年月日联动做，找到如下代码，试过，可以用，但是因为有html代码，而我需要的是纯JS的，不会转换。哪位兄台帮下忙<html>
<head>
<title>年月日三下拉框联动</title>
<meta http-equiv='Content-Type' content='text/html; charset=gb2312'>
</head>
<body>
<form name=form1>
<select name=YYYY onchange="YYYYMM(this.value)">
<option value="">年</option>
</select>
<select name=MM onchange="MMDD(this.value)">
<option value="">月</option>
</select>
<select name=DD>
<option value="">日</option>
</select>
</form>
<script language="JavaScript"><!--
function window.onload()
{
strYYYY = document.form1.YYYY.outerHTML;
strMM = document.form1.MM.outerHTML;
strDD = document.form1.DD.outerHTML;
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();
var str = strYYYY.substring(0, strYYYY.length - 9);
for (var i = (y); i < (y+30); i++) //以今年为准，后30年
{
str += "<option value='" + i + "'> " + i + "</option>\r\n";
}
document.form1.YYYY.outerHTML = str +"</select>";
//赋月份的下拉框
var str = strMM.substring(0, strMM.length - 9);
for (var i = 1; i < 13; i++)
{
str += "<option value='" + i + "'> " + i + "</option>\r\n";
}
document.form1.MM.outerHTML = str +"</select>";
document.form1.YYYY.value = y;
document.form1.MM.value = new Date().getMonth() + 1;
var n = MonHead[new Date().getMonth()];
if (new Date().getMonth() ==1 && IsPinYear(YYYYvalue)) n++;
writeDay(n); //赋日期下拉框
document.form1.DD.value = new Date().getDate();
}
function YYYYMM(str) //年发生变化时日期发生变化(主要是判断闰平年)
{
var MMvalue = document.form1.MM.options[document.form1.MM.selectedIndex].value;
if (MMvalue == ""){DD.outerHTML = strDD; return;}
var n = MonHead[MMvalue - 1];
if (MMvalue ==2 && IsPinYear(str)) n++;
writeDay(n)
}
function MMDD(str) //月发生变化时日期联动
{
var YYYYvalue = document.form1.YYYY.options[document.form1.YYYY.selectedIndex].value;
if (str == ""){DD.outerHTML = strDD; return;}
var n = MonHead[str - 1];
if (str ==2 && IsPinYear(YYYYvalue)) n++;
writeDay(n)
}
function writeDay(n) //据条件写日期的下拉框
{
var s = strDD.substring(0, strDD.length - 9);
for (var i=1; i<(n+1); i++)
s += "<option value='" + i + "'> " + i + "</option>\r\n";
document.form1.DD.outerHTML = s +"</select>";
}
function IsPinYear(year)//判断是否闰平年
{ return(0 == year%4 && (year%100 !=0 || year%400 == 0))}
//--></script>
</body>
</html>
var formNode = document.createElement("form");
formNode.name = "form1";
formNode.innerHTML = '<select name=YYYY onchange="YYYYMM(this.value)"> <option value="">年</option> </select> <select name=MM onchange="MMDD(this.value)"> <option value="">月</option> </select> <select name=DD> <option value="">日</option> </select>';
document.body.appendChild(formNode);
//下面还是现有的代码，注意下执行顺序就好了
function initYstWin(mm) {
if (ystWin == null) {
var inner = "<div id='chart1div'></div>"
+"<select id='year' onClick='datechange();'>"
+"<option ></option>"+"</select>年"
+"<select id='yue' onClick='datechange();'>"
+"<option ></option>"+"</select>月"
+"<select id='ri'>"
+"<option value='all'>--</option>"+"</select>日"
;
}
intyear();
}
//初始化年月日
function intyear(){
//先给年下拉框赋内容
var y = new Date().getFullYear();
var str="";
str += "<option value='" + y + "'>" + y + "</option>"
for (var i = (y-5); i < (y+5); i++) //以今年为准，前5年，后5年
{
str += "<option value='" + i + "'> " + i + "</option>\r\n";
}
$("#year").html(str);
//赋月份的下拉框
var m = new Date().getMonth() + 1;
var str="";
m=m>9?(m+""):("0"+m);
str += "<option value='" + m + "'>" + m + "</option>"
for (var i = 1; i < 13; i++)
{
i=i>9?(i+""):("0"+i);
str += "<option value='" + i + "'> " + i + "</option>\r\n";
}
$("#yue").html(str);
//赋日期的下拉框
var day = new Date(y, m, 0);
var ri = day.getDate();// 获取当月最后一天日期
var str="";
str = "<option value='all'>--</option>"
for (var i = 1; i < (ri+1); i++)
{
i=i>9?(i+""):("0"+i);
str += "<option value='" + i + "'> " + i + "</option>\r\n";
}
$("#ri").html(str); datechange();
}function datechange() //年月发生变化时日期发生变化,联动
{
//赋日期的下拉框
var y=$("#year").val();
var m=$("#yue").val();
var day = new Date(y, m, 0);//获取当前年和月的下拉框的值，
var ri = day.getDate();// 获取该年月最后一天日期
var str="";
//var r=new Date().getDate();
str = "<option value='all'>--</option>"
for (var i = 1; i < (ri+1); i++)
{
i=i>9?(i+""):("0"+i);
str += "<option value='" + i + "'> " + i + "</option>\r\n";
}
$("#ri").html(str);
}