读取年，月，日，动态加载至下拉列表框，天数随年份，月份改变，求简便方法

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<script language="javascript">
    function openScript(url, width, height) {
        var Win = window.open(url, "openScript", 'width=' + width + ',height=' + height + ',resizable=1,scrollbars=yes,menubar=no,status=yes');
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</script><SCRIPT language="javascript">
    var bMoveable = false;  //设置日历是否可以拖动
    var _VersionInfo = "Version:2.0"
    //2.0作者:walkingpoison
    //1.0作者: F.R.Huang(meizz)
    //MAIL: [email protected]
    var strFrame;  //存放日历层的HTML代码
    document.writeln('<iframe id=meizzDateLayer Author=wayx frameborder=0 style="position: absolute; width: 144; height: 211; z-index: 9998; display: none"></iframe>');
    strFrame = '<style>';
    strFrame += 'INPUT.button{BORDER-RIGHT: #ff9900 1px solid;BORDER-TOP: #ff9900 1px solid;BORDER-LEFT: #ff9900 1px solid;';
    strFrame += 'BORDER-BOTTOM: #ff9900 1px solid;BACKGROUND-COLOR: #fff8ec;font-family:宋体;}';
    strFrame += 'TD{FONT-SIZE: 9pt;font-family:宋体;}';
    strFrame += '</style>';
    strFrame += '<scr' + 'ipt>';
    strFrame += 'var datelayerx,datelayery; /*存放日历控件的鼠标位置*/';
    strFrame += 'var bDrag; /*标记是否开始拖动*/';
    strFrame += 'function document.onmousemove() /*在鼠标移动事件中，如果开始拖动日历，则移动日历*/';
    strFrame += '{if(bDrag && window.event.button==1)';
    strFrame += ' {var DateLayer=parent.document.all.meizzDateLayer.style;';
    strFrame += '  DateLayer.posLeft += window.event.clientX-datelayerx;/*由于每次移动以后鼠标位置都恢复为初始的位置，因此写法与div中不同*/';
    strFrame += '  DateLayer.posTop += window.event.clientY-datelayery;}}';
    strFrame += 'function DragStart()  /*开始日历拖动*/';
    strFrame += '{var DateLayer=parent.document.all.meizzDateLayer.style;';
    strFrame += ' datelayerx=window.event.clientX;';
    strFrame += ' datelayery=window.event.clientY;';
    strFrame += ' bDrag=true;}';
    strFrame += 'function DragEnd(){  /*结束日历拖动*/';
    strFrame += ' bDrag=false;}';
    strFrame += '</scr' + 'ipt>';
    strFrame += '<div style="z-index:9999;position: absolute; left:0; top:0;" onselectstart="return false"><span id=tmpSelectYearLayer Author=wayx style="z-index: 9999;position: absolute;top: 3; left: 19;display: none"></span>';
    strFrame += '<span id=tmpSelectMonthLayer Author=wayx style="z-index: 9999;position: absolute;top: 3; left: 78;display: none"></span>';
    strFrame += '<table border=1 cellspacing=0 cellpadding=0 width=142 height=160 bordercolor=#ff9900 bgcolor=#ff9900 Author="wayx">';
    strFrame += '  <tr Author="wayx"><td width=142 height=23 Author="wayx" bgcolor=#FFFFFF><table border=0 cellspacing=1 cellpadding=0 width=140 Author="wayx" height=23>';
    strFrame += '      <tr align=center Author="wayx"><td width=16 align=center bgcolor=#ff9900 style="font-size:12px;cursor: hand;color: #ffffff" ';
    strFrame += '        onclick="parent.meizzPrevM()" title="向前翻 1 月" Author=meizz><b Author=meizz><</b>';
    strFrame += '        </td><td width=60 align=center style="font-size:12px;cursor:default" Author=meizz ';
    strFrame += 'onmouseover="style.backgroundColor=\'#FFD700\'" onmouseout="style.backgroundColor=\'white\'" ';
    strFrame += 'onclick="parent.tmpSelectYearInnerHTML(this.innerText.substring(0,4))" title="点击这里选择年份"><span Author=meizz id=meizzYearHead></span></td>';
    strFrame += '<td width=48 align=center style="font-size:12px;cursor:default" Author=meizz onmouseover="style.backgroundColor=\'#FFD700\'" ';
    strFrame += ' onmouseout="style.backgroundColor=\'white\'" onclick="parent.tmpSelectMonthInnerHTML(this.innerText.length==3?this.innerText.substring(0,1):this.innerText.substring(0,2))"';
    strFrame += '        title="点击这里选择月份"><span id=meizzMonthHead Author=meizz></span></td>';
    strFrame += '        <td width=16 bgcolor=#ff9900 align=center style="font-size:12px;cursor: hand;color: #ffffff" ';
    strFrame += '         onclick="parent.meizzNextM()" title="向后翻 1 月" Author=meizz><b Author=meizz>></b></td></tr>';
    strFrame += '    </table></td></tr>';
    strFrame += '  <tr Author="wayx"><td width=142 height=18 Author="wayx">';
    strFrame += '<table border=1 cellspacing=0 cellpadding=0 bgcolor=#ff9900 ' + (bMoveable ? 'onmousedown="DragStart()" onmouseup="DragEnd()"' : '');
    strFrame += ' BORDERCOLORLIGHT=#FF9900 BORDERCOLORDARK=#FFFFFF width=140 height=20 Author="wayx" style="cursor:' + (bMoveable ? 'move' : 'default') + '">';
    strFrame += '<tr Author="wayx" align=center valign=bottom><td style="font-size:12px;color:#FFFFFF" Author=meizz>日</td>';
    strFrame += '<td style="font-size:12px;color:#FFFFFF" Author=meizz>一</td><td style="font-size:12px;color:#FFFFFF" Author=meizz>二</td>';
    strFrame += '<td style="font-size:12px;color:#FFFFFF" Author=meizz>三</td><td style="font-size:12px;color:#FFFFFF" Author=meizz>四</td>';
    strFrame += '<td style="font-size:12px;color:#FFFFFF" Author=meizz>五</td><td style="font-size:12px;color:#FFFFFF" Author=meizz>六</td></tr>';
    strFrame += '</table></td></tr>';
    strFrame += '  <tr Author="wayx"><td width=142 height=120 Author="wayx">';
    strFrame += '    <table border=1 cellspacing=2 cellpadding=0 BORDERCOLORLIGHT=#FF9900 BORDERCOLORDARK=#FFFFFF bgcolor=#fff8ec width=140 height=120 Author="wayx">';
    var n = 0; for (j = 0; j < 5; j++) {
        strFrame += ' <tr align=center Author="wayx">'; for (i = 0; i < 7; i++) {
            strFrame += '<td width=20 height=20 id=meizzDay' + n + ' style="font-size:12px" Author=meizz onclick=parent.meizzDayClick(this.innerText,0)></td>'; n++;
        }
        strFrame += '</tr>';
    }

strFrame += '      <tr align=center Author="wayx">';
    for (i = 35; i < 39; i++) strFrame += '<td width=20 height=20 id=meizzDay' + i + ' style="font-size:12px" Author=wayx onclick="parent.meizzDayClick(this.innerText,0)"></td>';
    strFrame += '        <td colspan=3 align=right ><span onclick=parent.closeLayer() style="font-size:12px;cursor: hand"';
    strFrame += '         ><u>关闭</u></span> </td></tr>';
    strFrame += '    </table></td></tr><tr Author="wayx"><td Author="wayx">';
    strFrame += '        <table border=0 cellspacing=1 cellpadding=0 width=100% Author="wayx" bgcolor=#FFFFFF>';
    strFrame += '          <tr Author="wayx"><td Author=meizz align=left><input Author=meizz type=button class=button value="<<" title="向前翻 1 年" onclick="parent.meizzPrevY()" ';
    strFrame += '             onfocus="this.blur()" style="font-size: 12px; height: 20px"><input Author=meizz class=button title="向前翻 1 月" type=button ';
    strFrame += '             value="< " onclick="parent.meizzPrevM()" onfocus="this.blur()" style="font-size: 12px; height: 20px"></td><td ';
    strFrame += '             Author=meizz align=center><input Author=meizz type=button class=button value=今天 onclick="parent.meizzToday()" ';
    strFrame += '             onfocus="this.blur()" title="当前日期" style="font-size: 12px; height: 20px; cursor:hand"></td><td ';
    strFrame += '             Author=meizz align=right><input Author=meizz type=button class=button value=" >" onclick="parent.meizzNextM()" ';
    strFrame += '             onfocus="this.blur()" title="向后翻 1 月" class=button style="font-size: 12px; height: 20px"><input ';
    strFrame += '             Author=meizz type=button class=button value=">>" title="向后翻 1 年" onclick="parent.meizzNextY()"';
    strFrame += '             onfocus="this.blur()" style="font-size: 12px; height: 20px"></td>';
    strFrame += '</tr></table></td></tr></table></div>';    window.frames.meizzDateLayer.document.writeln(strFrame);
    window.frames.meizzDateLayer.document.close();  //解决ie进度条不结束的问题    //==================================================== WEB 页面显示部分 ======================================================
    var outObject;
    var outButton;  //点击的按钮
    var outDate = "";  //存放对象的日期
    var odatelayer = window.frames.meizzDateLayer.document.all;  //存放日历对象
    function setday(tt, obj) //主调函数
    {
        if (arguments.length > 2) { alert("对不起!传入本控件的参数太多!"); return; }
        if (arguments.length == 0) { alert("对不起!您没有传回本控件任何参数!"); return; }
        var dads = document.all.meizzDateLayer.style;
        var th = tt;
        var ttop = tt.offsetTop;     //TT控件的定位点高
        var thei = tt.clientHeight;  //TT控件本身的高
        var tleft = tt.offsetLeft;    //TT控件的定位点宽
        var ttyp = tt.type;          //TT控件的类型
        while (tt = tt.offsetParent) { ttop += tt.offsetTop; tleft += tt.offsetLeft; }
        dads.top = (ttyp == "image") ? ttop + thei : ttop + thei + 6;
        dads.left = tleft;
        outObject = (arguments.length == 1) ? th : obj;
        outButton = (arguments.length == 1) ? null : th; //设定外部点击的按钮
        //根据当前输入框的日期显示日历的年月
        var reg = /^(\d+)-(\d{1,2})-(\d{1,2})$/;
        var r = outObject.value.match(reg);
        if (r != null) {
            r[2] = r[2] - 1;
            var d = new Date(r[1], r[2], r[3]);
            if (d.getFullYear() == r[1] && d.getMonth() == r[2] && d.getDate() == r[3]) {
                outDate = d;  //保存外部传入的日期
            }
            else outDate = "";
            meizzSetDay(r[1], r[2] + 1);
        }
        else {
            outDate = "";
            meizzSetDay(new Date().getFullYear(), new Date().getMonth() + 1);
        }
        dads.display = '';        event.returnValue = false;
    }    var MonHead = new Array(12);         //定义阳历中每个月的最大天数
    MonHead[0] = 31; MonHead[1] = 28; MonHead[2] = 31; MonHead[3] = 30; MonHead[4] = 31; MonHead[5] = 30;
    MonHead[6] = 31; MonHead[7] = 31; MonHead[8] = 30; MonHead[9] = 31; MonHead[10] = 30; MonHead[11] = 31;    var meizzTheYear = new Date().getFullYear(); //定义年的变量的初始值
    var meizzTheMonth = new Date().getMonth() + 1; //定义月的变量的初始值
    var meizzWDay = new Array(39);               //定义写日期的数组    function document.onclick() //任意点击时关闭该控件 //ie6的情况可以由下面的切换焦点处理代替
    {
        with (window.event) {
            if (srcElement.getAttribute("Author") == null && srcElement != outObject && srcElement != outButton)
                closeLayer();
        }
    }    function document.onkeyup()  //按Esc键关闭，切换焦点关闭
    {
        if (window.event.keyCode == 27) {
            if (outObject) outObject.blur();
            closeLayer();
        }
        else if (document.activeElement)
            if (document.activeElement.getAttribute("Author") == null && document.activeElement != outObject && document.activeElement != outButton) {
                closeLayer();
            }
    }    function meizzWriteHead(yy, mm)  //往 head 中写入当前的年与月
    {
        odatelayer.meizzYearHead.innerText = yy + " 年";
        odatelayer.meizzMonthHead.innerText = mm + " 月";
    }    function tmpSelectYearInnerHTML(strYear) //年份的下拉框
    {
        if (strYear.match(/\D/) != null) { alert("年份输入参数不是数字!"); return; }
        //var m = (strYear) ? strYear : new Date().getFullYear();
        var m = new Date().getFullYear();
        if (m < 1000 || m > 9999) { alert("年份值不在 1000 到 9999 之间!"); return; }
        var n = m - 100;
        if (n < 1000) n = 1000;
        if (n + 120 > 9999) n = 9974;
        var s = "<select Author=meizz name=tmpSelectYear style='font-size: 12px' "
        s += "onblur='document.all.tmpSelectYearLayer.style.display=\"none\"' "
        s += "onchange='document.all.tmpSelectYearLayer.style.display=\"none\";"
        s += "parent.meizzTheYear = this.value; parent.meizzSetDay(parent.meizzTheYear,parent.meizzTheMonth)'>\r\n";
        var selectInnerHTML = s;
        for (var i = n; i < n + 120; i++) {
            if (i == m)
            { selectInnerHTML += "<option Author=wayx value='" + i + "' selected>" + i + "年" + "</option>\r\n"; }
            else { selectInnerHTML += "<option Author=wayx value='" + i + "'>" + i + "年" + "</option>\r\n"; }
        }
        selectInnerHTML += "</select>";
        odatelayer.tmpSelectYearLayer.style.display = "";
        odatelayer.tmpSelectYearLayer.innerHTML = selectInnerHTML;
        odatelayer.tmpSelectYear.focus();
    }    function tmpSelectMonthInnerHTML(strMonth) //月份的下拉框
    {
        if (strMonth.match(/\D/) != null) { alert("月份输入参数不是数字!"); return; }
        var m = (strMonth) ? strMonth : new Date().getMonth() + 1;
        var s = "<select Author=meizz name=tmpSelectMonth style='font-size: 12px' "
        s += "onblur='document.all.tmpSelectMonthLayer.style.display=\"none\"' "
        s += "onchange='document.all.tmpSelectMonthLayer.style.display=\"none\";"
        s += "parent.meizzTheMonth = this.value; parent.meizzSetDay(parent.meizzTheYear,parent.meizzTheMonth)'>\r\n";
        var selectInnerHTML = s;
        for (var i = 1; i < 13; i++) {
            if (i == m)
            { selectInnerHTML += "<option Author=wayx value='" + i + "' selected>" + i + "月" + "</option>\r\n"; }
            else { selectInnerHTML += "<option Author=wayx value='" + i + "'>" + i + "月" + "</option>\r\n"; }
        }
        selectInnerHTML += "</select>";
        odatelayer.tmpSelectMonthLayer.style.display = "";
        odatelayer.tmpSelectMonthLayer.innerHTML = selectInnerHTML;
        odatelayer.tmpSelectMonth.focus();
    }

http://mengnanleo.iteye.com/admin/blogs/1155011
这个你可以挪去借鉴下，很久以前写的，没有进一步优化，不过看是应该能看明白的了，呵呵

调试易

读取年，月，日，动态加载至下拉列表框，天数随年份，月份改变，求简便方法

解决方案 »