电子日历

来源：互联网发布：游戏编程入门先学什么编辑：程序博客网时间：2024/04/27 17:32

</HEAD>

function leap( year)
{
    if(((year%100)==0)||((year%4)==0))
    {
        return 0; //0为闰年
    }
    else
    {
        return 1; //1为非闰年
    }
}

function weekAfterDays(days, weekStartno)
{
var weekno = (weekStartno + days) % 7;

//weekno = (weekno == 0)?7:weekno;
weekno = (weekno < 0)?7 + weekno:weekno;

return weekno;
}

function weekOfJanFirst(year)
{
var leapSumFrom1994 = leapSum(year, 1994);

var daysFrom1994 = (year - 1994) * 365 + leapSumFrom1994;

var weekno = weekAfterDays(daysFrom1994, 6);

return weekno;
}

function monthArr(year)
{
if (0 ==leap(year))
{
  return [31,29,31,30,31,30,31,31,30,31,30,31];
}
else
{
  return [31,28,31,30,31,30,31,31,30,31,30,31];
}
}

function DaysOfYear(year, month)
{
var months = monthArr(year);
var sum = 0;

var i;
for (i = 0; i < month - 1; i++)
{
sum = sum + months[i];
}
return sum;
}

function weekOfFirst(year, month)
{

var firstOfweekno = weekOfJanFirst(year);

var days = DaysOfYear(year, month);

var weekno = weekAfterDays(days, firstOfweekno);

return weekno;
}

function weekNo(year, month, day)
{

var firstOfweekno = weekOfFirst(year, month);

var weekno = weekAfterDays(day - 1, firstOfweekno);

return weekno;
}

function calendaTable()
{
document.write('<TABLE border=0 width=300>');

document.write('<TR><TD bgColor=#00abab colSpan=7><FONT color=#ffffff size=2 style="FONT-SIZE: 9pt">阳历');

//Add selector
document.write('<SELECT id="SY" onchange=changeCld() style="FONT-SIZE: 9pt">');

for(i=1900;i<2050;i++)
{
document.write('<option>'+i) ;
}

document.write('</SELECT>年');

document.write('<SELECT id="SM" onchange=changeCld() style="FONT-SIZE: 9pt">');

for(i=1;i<13;i++)
{
document.write('<option>'+i) ;
}

document.write('</SELECT>月</FONT></TD></TR>');
//End Adding selector

//Initialize selector
var today = new Date();
var SY = document.getElementById("SY");
var SM = document.getElementById("SM");
SY.selectedIndex = today.getYear() - 1900; // This part need to differ IE from FireFox. FireFox need not minus 1900.
SM.selectedIndex = today.getMonth();
//End Initializing selector

//Add calenda head
document.write('<TR align=middle bgColor=#e0e0e0> ');
document.write('<TD width=54 style="FONT-SIZE: 9pt">日</TD>');
document.write('<TD width=54 style="FONT-SIZE: 9pt">一</TD>');
document.write('<TD width=54 style="FONT-SIZE: 9pt">二</TD>');
document.write('<TD width=54 style="FONT-SIZE: 9pt">三</TD>');
document.write('<TD width=54 style="FONT-SIZE: 9pt">四</TD>');
document.write('<TD width=54 style="FONT-SIZE: 9pt">五</TD>');
document.write('<TD width=54 style="FONT-SIZE: 9pt">六</TD>');
document.write('</TR>');
//End Adding calenda head

//Generate table content cell
var i=0;
for (i=0; i<6; i++)
{
  document.write('<tr align=center>');
  var j;
  for (j=0; j<7; j++)
  {
   var gNum = i*7+j;
   var idStr = "id" + gNum;

   document.write('<td id=');
   document.write(idStr);
   document.write(' style="FONT-SIZE: 9pt"> </td>');

   var col = document.getElementById(idStr);
   col.appendChild(document.createTextNode(''));
  }
  document.write('</tr>');
}
//End Generating table content cell

document.write('</TABLE>');
}

function calenda(year, month, today)
{
var day;
var bstart;
var months = monthArr(year);

var i;
for(i=0;i<6;i++)
{
  var j;
  for(j=0;j<7;j++)
  {
   var gNum = i*7+j;
   var idStr = "id" + gNum;
   var col = document.getElementById(idStr);

   if ((0 == i) && (j == weekOfFirst(year, month)))
   {
    day = 1;
    bstart = 1;
   }
   if (1 == bstart)
   {
    col.firstChild.data=day;
    col.style.color="black";

    if ((0==j)||(6==j))
    {
     col.style.color="green";
    }

    if (today == day)
    {
     col.style.color="red";
    }

    day++;
    if (day > months[month -1])
    {
     bstart = 0;
    }
   }
   else
   {
    col.firstChild.data=' ';
   }
  }

}
}

function changeCld()
{
var y,m;

var SY = document.getElementById("SY");
var SM = document.getElementById("SM");
y=SY.selectedIndex + 1900;
m=SM.selectedIndex + 1; // If fireFox no need to add 1;

var today = new Date();

calenda(y, m, today.getDate());
}
</SCRIPT>

<BODY>

<SCRIPT language=JavaScript>
<!--

calendaTable();

var today = new Date();

calenda(today.getYear(), today.getMonth() + 1, today.getDate());

//--></SCRIPT>

</TBODY></TABLE>

</BODY>
</HTML>