javascript写的日历控件(收藏)

<!--
//-------------------------------------------------------------------------------

//  这是一个日历 Javascript 页面脚本控件，适用于微软的 IE （5.0以上）浏览器
//  主调用函数是 setday(this,[object])，[object]是控件输出的控件名，举两个具体调用的例子：
//  一、<input name=txt><input type=button value=setday onclick="setday(this,document.all.txt)">
//  二、<input onfocus="setday(this)">
//  本日历的年份限制是（1000 - 9999）

//==================================================== WEB 页面显示部分 =====================================================
document.writeln('<div id=meizzDateLayer style="position: absolute; 142; height: 166; z-index: 9998; display: none">');
document.writeln('<span id=tmpSelectYearLayer  style="z-index: 9999;position: absolute;top: 2; left: 18;display: none"></span>');
document.writeln('<span id=tmpSelectMonthLayer style="z-index: 9999;position: absolute;top: 2; left: 75;display: none"></span>');
document.writeln('<table border=0 cellspacing=1 cellpadding=0 width=142 height=160 bgcolor=#808080 onselectstart="return false">');
document.writeln('  <tr><td width=142 height=23 bgcolor=#FFFFFF><table border=0 cellspacing=1 cellpadding=0 width=140 height=23>');
document.writeln('      <tr align=center><td width=20 align=center bgcolor=#808080 style="font-size:12px;cursor: hand;color: #FFD700" ');
document.writeln('        onclick="meizzPrevM()" title="向前翻　月" Author=meizz><b Author=meizz>&lt;&lt;</b>');
document.writeln('        </td><td width=100 align=center style="font-size:12px;cursor:default" Author=meizz>');
document.writeln('        <span Author=meizz id=meizzYearHead onclick="tmpSelectYearInnerHTML(this.innerText)"></span>&nbsp;年&nbsp;<span');
document.writeln('         id=meizzMonthHead Author=meizz onclick="tmpSelectMonthInnerHTML(this.innerText)"></span>&nbsp;月</td>');
document.writeln('        <td width=20 bgcolor=#808080 align=center style="font-size:12px;cursor: hand;color: #FFD700" ');
document.writeln('         onclick="meizzNextM()" title="往后翻　月" Author=meizz><b Author=meizz>&gt;&gt;</b></td></tr>');
document.writeln('    </table></td></tr>');
document.writeln('  <tr><td width=142 height=18 bgcolor=#808080>');
document.writeln('<table border=0 cellspacing=0 cellpadding=0 width=140 height=1 style="cursor:default">');
document.writeln('<tr align=center><td style="font-size:12px;color:#FFFFFF" Author=meizz>日</td>');
document.writeln('<td style="font-size:12px;color:#FFFFFF" Author=meizz>一</td><td style="font-size:12px;color:#FFFFFF" Author=meizz>二</td>');
document.writeln('<td style="font-size:12px;color:#FFFFFF" Author=meizz>三</td><td style="font-size:12px;color:#FFFFFF" Author=meizz>四</td>');
document.writeln('<td style="font-size:12px;color:#FFFFFF" Author=meizz>五</td><td style="font-size:12px;color:#FFFFFF" Author=meizz>六</td></tr>');
document.writeln('</table></td></tr><!-- Author:F.R.Huang(meizz) http://www.meizz.com/ mail: meizz@hzcnc.com 2002-10-8 -->');
document.writeln('  <tr><td width=142 height=120>');
document.writeln('    <table border=0 cellspacing=1 cellpadding=0 width=140 height=120 bgcolor=#FFFFFF>');
var n=0; for (j=0;j<5;j++){ document.writeln (' <tr align=center>'); for (i=0;i<7;i++){
document.writeln('<td width=20 height=20 id=meizzDay'+n+' style="font-size:12px" Author=meizz onclick=meizzDayClick(this.innerText)></td>');n++;}
document.writeln('</tr>');}
document.writeln('      <tr align=center><td width=20 height=20 style="font-size:12px" id=meizzDay35 Author=meizz ');
document.writeln('         onclick=meizzDayClick(this.innerText)></td>');
document.writeln('        <td width=20 height=20 style="font-size:12px" id=meizzDay36 Author=meizz onclick=meizzDayClick(this.innerText)></td>');
document.writeln('        <td colspan=5 align=right Author=meizz><span onclick=closeLayer() style="font-size:12px;cursor: hand"');
document.writeln('         Author=meizz <!--title="作者: F.R.Huang(meizz) MAIL: meizz@hzcnc.com"--><u>关闭本控件</u></span>&nbsp;</td></tr>');
document.writeln('    </table></td></tr><tr><td>');
document.writeln('        <table border=0 cellspacing=1 cellpadding=0 width=100% bgcolor=#FFFFFF>');
document.writeln('          <tr><td Author=meizz align=left><input Author=meizz type=button value="< " title="向前翻　年" onclick="meizzPrevY()" ');
document.writeln('             onfocus="this.blur()" style="font-size: 12px; height: 20px"><input Author=meizz title="向前翻　月" type=button ');
document.writeln('             value="<<" onclick="meizzPrevM()" onfocus="this.blur()" style="font-size: 12px; height: 20px"></td><td ');
document.writeln('             Author=meizz align=center><input Author=meizz type=button value=Today onclick="meizzToday()" ');
document.writeln('             onfocus="this.blur()" title="现在的年月" style="font-size: 12px; height: 20px"></td><td ');
document.writeln('             Author=meizz align=right><input Author=meizz type=button value=">>" onclick="meizzNextM()" ');
document.writeln('             onfocus="this.blur()" title="往后翻　月" style="font-size: 12px; height: 20px"><input ');
document.writeln('             Author=meizz type=button value=" >" title="往后翻　年" onclick="meizzNextY()"');
document.writeln('             onfocus="this.blur()" style="font-size: 12px; height: 20px"></td>');
document.writeln('</tr></table></td></tr></table></div>');

//==================================================== WEB 页面显示部分 ======================================================
var outObject;
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;
  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(37);               //定义写日期的数组

function document.onclick() //任意点击时关闭该控件
{
  with(window.event.srcElement)
  { if (tagName != "INPUT" && getAttribute("Author")==null)
    document.all.meizzDateLayer.style.display="none";
  }
}

function meizzWriteHead(yy,mm)  //往 head 中写入当前的年与月
  { document.all.meizzYearHead.innerText  = yy;
    document.all.meizzMonthHead.innerText = mm;
  }

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();
  if (m < 1000 || m > 9999) {alert("年份值不在 1000 到 9999 之间！");return;}
  var n = m - 50;
  if (n < 1000) n = 1000;
  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 += "meizzTheYear = this.value; meizzSetDay(meizzTheYear,meizzTheMonth)'>\r\n";
  var selectInnerHTML = s;
  for (var i = 1949; i < 2010; i++)
  {
    selectInnerHTML += "<option value='" + i + "'>" + i + "年" + "</option>\r\n";
  }
/*  for (var i = n; i < n + 51; i++)
  {
    if (i == m)
       {selectInnerHTML += "<option value='" + i + "' selected>" + i + "年" + "</option>\r\n";}
    else {selectInnerHTML += "<option value='" + i + "'>" + i + "年" + "</option>\r\n";}
  }
 */
  selectInnerHTML += "</select>";
  document.all.tmpSelectYearLayer.style.display="";
  document.all.tmpSelectYearLayer.innerHTML = selectInnerHTML;
  document.all.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 += "meizzTheMonth = this.value; meizzSetDay(meizzTheYear,meizzTheMonth)'>\r\n";
  var selectInnerHTML = s;
  for (var i = 1; i < 13; i++)
  {
    if (i == m)
       {selectInnerHTML += "<option value='"+i+"' selected>"+i+"月"+"</option>\r\n";}
    else {selectInnerHTML += "<option value='"+i+"'>"+i+"月"+"</option>\r\n";}
  }
  selectInnerHTML += "</select>";
  document.all.tmpSelectMonthLayer.style.display="";
  document.all.tmpSelectMonthLayer.innerHTML = selectInnerHTML;
  document.all.tmpSelectMonth.focus();
}

function closeLayer()               //这个层的关闭
  {
    document.all.meizzDateLayer.style.display="none";
  }

function document.onkeydown()
  {
    if (window.event.keyCode==27)document.all.meizzDateLayer.style.display="none";
  }

function IsPinYear(year)            //判断是否闰平年
  {
    if (0==year%4&&((year%100!=0)||(year%400==0))) return true;else return false;
  }

function GetMonthCount(year,month)  //闰年二月为29天
  {
    var c=MonHead[month-1];if((month==2)&&IsPinYear(year)) c++;return c;
  }

function GetDOW(day,month,year)     //求某天的星期几
  {
    var dt=new Date(year,month-1,day).getDay()/7; return dt;
  }

function meizzPrevY()  //往前翻 Year
  {
    if(meizzTheYear > 999 && meizzTheYear <10000){meizzTheYear--;}
    else{alert("年份超出范围（1000-9999）！");}
    meizzSetDay(meizzTheYear,meizzTheMonth);
  }
function meizzNextY()  //往后翻 Year
  {
    if(meizzTheYear > 999 && meizzTheYear <10000){meizzTheYear++;}
    else{alert("年份超出范围（1000-9999）！");}
    meizzSetDay(meizzTheYear,meizzTheMonth);
  }
function meizzToday()  //Today Button
  {
    meizzTheYear = new Date().getFullYear();
    meizzTheMonth = new Date().getMonth()+1;
    meizzSetDay(meizzTheYear,meizzTheMonth);
  }
function meizzPrevM()  //往前翻月份
  {
    if(meizzTheMonth>1){meizzTheMonth--}else{meizzTheYear--;meizzTheMonth=12;}
    meizzSetDay(meizzTheYear,meizzTheMonth);
  }
function meizzNextM()  //往后翻月份
  {
    if(meizzTheMonth==12){meizzTheYear++;meizzTheMonth=1}else{meizzTheMonth++}
    meizzSetDay(meizzTheYear,meizzTheMonth);
  }

function meizzSetDay(yy,mm)   //主要的写程序**********
{
  meizzWriteHead(yy,mm);
  for (var i = 0; i < 37; i++){meizzWDay[i]=""};  //将显示框的内容全部清空
  var day1 = 1,firstday = new Date(yy,mm-1,1).getDay();  //某月第一天的星期几
  for (var i = firstday; day1 < GetMonthCount(yy,mm)+1; i++){meizzWDay[i]=day1;day1++;}
  for (var i = 0; i < 37; i++)
  { var da = eval("document.all.meizzDay"+i)     //书写新的一个月的日期星期排列
    if (meizzWDay[i]!="")
      { da.innerHTML = "<b>" + meizzWDay[i] + "</b>";
        da.style.backgroundColor = (yy == new Date().getFullYear() &&
        mm == new Date().getMonth()+1 && meizzWDay[i] == new Date().getDate()) ? "#FFD700" : "#ADD8E6";
        da.style.cursor="hand"
      }
    else{da.innerHTML="";da.style.backgroundColor="";da.style.cursor="default"}
  }
}
function meizzDayClick(n)  //点击显示框选取日期，主输入函数*************
{
  var yy = meizzTheYear;
  var mm = meizzTheMonth;
  if (mm < 10){mm = "0" + mm;}
  if (outObject)
  {
    if (!n) {outObject.value=""; return;}
    if ( n < 10){n = "0" + n;}
    outObject.value= yy + "-" + mm + "-" + n ; //注：在这里你可以输出改成你想要的格式
    closeLayer();
  }
  else {closeLayer(); alert("您所要输出的控件对象并不存在！");}
}
meizzSetDay(meizzTheYear,meizzTheMonth);
// -->