javascript写的日历控件(收藏)

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javascript写的日历控件(收藏)

');
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 <u>关闭本控件</u></span> </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);
// -->

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原文地址：https://www.cnblogs.com/guoxiaowen/p/1460059.html