popcalendar.js

基于javascript的自定义一个时间控件。

      // d4 = (J + 31741 - (J mod 7)) mod 146097 mod 36524 mod 1461
      // L = d4 / 1460
      // d1 = ((d4 - L) mod 365) + L
      // WeekNumber = d1 / 7 + 1
 
      year = n.getFullYear();
      month = n.getMonth() + 1;
      if (startAt == 0) {
         day = n.getDate() + 1;
      }
      else {
         day = n.getDate();
      }
 
      a = Math.floor((14-month) / 12);
      y = year + 4800 - a;
      m = month + 12 * a - 3;
      b = Math.floor(y/4) - Math.floor(y/100) + Math.floor(y/400);
      J = day + Math.floor((153 * m + 2) / 5) + 365 * y + b - 32045;
      d4 = (((J + 31741 - (J % 7)) % 146097) % 36524) % 1461;
      L = Math.floor(d4 / 1460);
      d1 = ((d4 - L) % 365) + L;
      week = Math.floor(d1/7) + 1;
 
      return week;
   }

	function constructCalendar () {
		var aNumDays = Array (31,0,31,30,31,30,31,31,30,31,30,31)

		var dateMessage
		var	startDate =	new	Date (yearSelected,monthSelected,1)
		var endDate

		if (monthSelected==1)
		{
			endDate	= new Date (yearSelected,monthSelected+1,1);
			endDate	= new Date (endDate	- (24*60*60*1000));
			numDaysInMonth = endDate.getDate()
		}
		else
		{
			numDaysInMonth = aNumDays[monthSelected];
		}

		datePointer	= 0
		dayPointer = startDate.getDay() - startAt
		
		if (dayPointer<0)
		{
			dayPointer = 6
		}

		sHTML =	"<table	 border=0 style='font-family:verdana;font-size:10px;'><tr>"

		if (showWeekNumber==1)
		{
			sHTML += "<td width=27><b>" + weekString + "</b></td><td width=1 rowspan=7 bgcolor='#d0d0d0' style='padding:0px'><img src='"+imgDir+"divider.gif' width=1></td>"
		}

		for	(i=0; i<7; i++)	{
			sHTML += "<td width='27' align='right'><B>"+ dayName[i]+"</B></td>"
		}
		sHTML +="</tr><tr>"
		
		if (showWeekNumber==1)
		{
			sHTML += "<td align=right>" + WeekNbr(startDate) + "&nbsp;</td>"
		}

		for	( var i=1; i<=dayPointer;i++ )
		{
			sHTML += "<td>&nbsp;</td>"
		}
	
		for	( datePointer=1; datePointer<=numDaysInMonth; datePointer++ )
		{
			dayPointer++;
			sHTML += "<td align=right>"
			sStyle=styleAnchor
			if ((datePointer==odateSelected) &&	(monthSelected==omonthSelected)	&& (yearSelected==oyearSelected))
			{ sStyle+=styleLightBorder }

			sHint = ""
			for (k=0;k<HolidaysCounter;k++)
			{
				if ((parseInt(Holidays[k].d)==datePointer)&&(parseInt(Holidays[k].m)==(monthSelected+1)))
				{
					if ((parseInt(Holidays[k].y)==0)||((parseInt(Holidays[k].y)==yearSelected)&&(parseInt(Holidays[k].y)!=0)))
					{
						sStyle+="background-color:#FFDDDD;"
						sHint+=sHint==""?Holidays[k].desc:"\n"+Holidays[k].desc
					}
				}
			}

			var regexp= /\"/g
			sHint=sHint.replace(regexp,"&quot;")

			dateMessage = "onmousemove='window.status=\""+selectDateMessage.replace("[date]",constructDate(datePointer,monthSelected,yearSelected))+"\"' onmouseout='window.status=\"\"' "

			if ((datePointer==dateNow)&&(monthSelected==monthNow)&&(yearSelected==yearNow))
			{ sHTML += "<b><a "+dateMessage+" title=\"" + sHint + "\" style='"+sStyle+"' href='javascript:dateSelected="+datePointer+";closeCalendar();'><font color=#ff0000>&nbsp;" + datePointer + "</font>&nbsp;</a></b>"}
			else if	(dayPointer % 7 == (startAt * -1)+1)
			{ sHTML += "<a "+dateMessage+" title=\"" + sHint + "\" style='"+sStyle+"' href='javascript:dateSelected="+datePointer + ";closeCalendar();'>&nbsp;<font color=#909090>" + datePointer + "</font>&nbsp;</a>" }
			else
			{ sHTML += "<a "+dateMessage+" title=\"" + sHint + "\" style='"+sStyle+"' href='javascript:dateSelected="+datePointer + ";closeCalendar();'>&nbsp;" + datePointer + "&nbsp;</a>" }

			sHTML += ""
			if ((dayPointer+startAt) % 7 == startAt) { 
				sHTML += "</tr><tr>" 
				if ((showWeekNumber==1)&&(datePointer<numDaysInMonth))
				{
					sHTML += "<td align=right>" + (WeekNbr(new Date(yearSelected,monthSelected,datePointer+1))) + "&nbsp;</td>"
				}
			}
		}        
		document.getElementById("content").innerHTML   = sHTML		
		document.getElementById("spanMonth").innerHTML = "&nbsp;" +	monthName[monthSelected] + "&nbsp;<IMG id='changeMonth' SRC='"+imgDir+"drop1.gif' WIDTH='12' HEIGHT='10' BORDER=0>"
		document.getElementById("spanYear").innerHTML =	"&nbsp;" + yearSelected	+ "&nbsp;<IMG id='changeYear' SRC='"+imgDir+"drop1.gif' WIDTH='12' HEIGHT='10' BORDER=0>"
	}
    //验证是否是整数
        function isInt (theStr) 
        {
            var flag = true;

            if (isEmpty(theStr)) 
            { 
            flag=false;
            }
            else
            { 
                for (var i=0; i<theStr.length; i++) 
                {
                    if (isDigit(theStr.substring(i,i+1)) == false)
                    {
                        flag = false; break;
                    }
                }
            }
            return(flag);
        }
        // 判断是否为空
        function isEmpty (str)
        {
            if ((str==null)||(str.length==0)) return true;
            else return(false);
        }
        //验证变量s是否全由数字构成
        function isDigit(s)
        {
            var patrn=/^[0-9]{1,20}$/;
            if (!patrn.exec(s)) return false
            return true
        }
        //验证日期格式
        function isDate (theStr)
        {        
            var the1st = theStr.indexOf('-');
            var the2nd = theStr.lastIndexOf('-');

            if (the1st == the2nd)
            { 
                return(false); 
            }
            else 
            {
                var y = theStr.substring(0,the1st);
                var m = theStr.substring(the1st+1,the2nd);
                var d = theStr.substring(the2nd+1,theStr.length);
                var maxDays = 31;

                if (isInt(m)==false || isInt(d)==false || isInt(y)==false) 
                return(false);
                else if (y.length < 4) return(false);
                else if (!isBetween (m, 1, 12)) return(false); 
                else if (m==4 || m==6 || m==9 || m==11) maxDays = 30;
                else if (m==2) {
                    if (y % 4 > 0) maxDays = 28;
                    else if (y % 100 == 0 && y % 400 > 0) maxDays = 28;
                    else maxDays = 29;
                    }
                if (isBetween(d, 1, maxDays) == false) { return(false); }
                else { return(true); }
             }
        }
        
        function isBetween (val, lo, hi) {
        if ((val < lo) || (val > hi)) { return(false); } 
          else { return(true); } 
        }
	function popUpCalendar(ctl,	ctl2, format) {
		var	leftpos=0
		var	toppos=0

		if (bPageLoaded)
		{
			if ( crossobj.visibility ==	"hidden" ) {
				ctlToPlaceValue	= ctl2
				dateFormat=format;

				formatChar = " "
				aFormat	= dateFormat.split(formatChar)
				if (aFormat.length<3)
				{
					formatChar = "/"
					aFormat	= dateFormat.split(formatChar)
					if (aFormat.length<3)
					{
						formatChar = "."
						aFormat	= dateFormat.split(formatChar)
						if (aFormat.length<3)
						{
							formatChar = "-"
							aFormat	= dateFormat.split(formatChar)
							if (aFormat.length<3)
							{
								// invalid date	format
								formatChar=""
							}
						}
					}
				}

				tokensChanged =	0
				if ( formatChar	!= "" )
				{
					// use user's date
					aData =	ctl2.value.split(formatChar)

					for	(i=0;i<3;i++)
					{
						if ((aFormat[i]=="d") || (aFormat[i]=="dd"))
						{
							dateSelected = parseInt(aData[i], 10)
							tokensChanged ++
						}
						else if	((aFormat[i]=="m") || (aFormat[i]=="mm"))
						{
							monthSelected =	parseInt(aData[i], 10) - 1
							tokensChanged ++
						}
						else if	(aFormat[i]=="yyyy")
						{
							yearSelected = parseInt(aData[i], 10)
							tokensChanged ++
						}
						else if	(aFormat[i]=="mmm")
						{
							for	(j=0; j<12;	j++)
							{
								if (aData[i]==monthName[j])
								{
									monthSelected=j
									tokensChanged ++
								}
							}
						}
						else if	(aFormat[i]=="mmmm")
						{
							for	(j=0; j<12;	j++)
							{
								if (aData[i]==monthName2[j])
								{
									monthSelected=j
									tokensChanged ++
								}
							}
						}
					}
				}

				if ((tokensChanged!=3)||isNaN(dateSelected)||isNaN(monthSelected)||isNaN(yearSelected))
				{
					dateSelected = dateNow
					monthSelected =	monthNow
					yearSelected = yearNow
				}

				odateSelected=dateSelected
				omonthSelected=monthSelected
				oyearSelected=yearSelected

				aTag = ctl
				do {
					aTag = aTag.offsetParent;
					leftpos	+= aTag.offsetLeft;
					toppos += aTag.offsetTop;
				} while(aTag.tagName!="BODY");
				
				var bodyheight = 0;
                var bodywidth = 0;
                var endIndex = 0; 
                var myFrame ;
				try
				{
				    myFrame = parent.parent.document.getElementById("upFrame");                     
				}
				catch(e)
				{
				}
                
                            
                if(myFrame != null)
                {
                    
                    bodyheight = myFrame.style.height;
                    bodywidth = myFrame.style.width;
                    endIndex = bodyheight.lastIndexOf("p");
                    bodyheight = bodyheight.substring(0,endIndex);
                    
                    endIndex = bodywidth.lastIndexOf("p");
                    bodywidth = bodywidth.substring(0,endIndex);                   
                }
               
                /*
                var bodyheight = parent.parent.document.getElementById("upFrame").style.height;
                var bodywidth = parent.parent.document.getElementById("upFrame").style.width;
                var endIndex = bodyheight.lastIndexOf("p");
                bodyheight = bodyheight.substring(0,endIndex);
                
                endIndex = bodywidth.lastIndexOf("p");
                bodywidth = bodywidth.substring(0,endIndex);*/
                
                var calendpostionY = ctl.offsetTop + toppos + ctl.offsetHeight + 2;
                var calendpostionX = ctl.offsetLeft	+ leftpos;
                
                if(myFrame != null)
                {
                    if( calendpostionY +240 > bodyheight)
                    {
                        calendpostionY = calendpostionY-240;
                    }
                    
                    if(calendpostionX + 260 > bodywidth)
                    {
                        calendpostionX = calendpostionX -260;
                    }
                }
                
               
				crossobj.left =	fixedX==-1 ? calendpostionX : fixedX
				crossobj.top = fixedY==-1 ?	calendpostionY : fixedY
				constructCalendar (1, monthSelected, yearSelected);
				crossobj.visibility=(dom||ie)? "visible" : "show"
				
				var diviframe = document.getElementById("diviframe");
				if(diviframe != null)
				{
				    diviframe.style.display = "none";				   
				}				

				hideElement( 'SELECT', document.getElementById("calendar") );
				hideElement( 'APPLET', document.getElementById("calendar") );			

				bShow = true;
				
			}
			else
			{
				hideCalendar()
				if (ctlNow!=ctl) {popUpCalendar(ctl, ctl2, format)}
			}
			ctlNow = ctl
		}
	}

	document.onkeypress = function hidecal1 () { 
		if (event.keyCode==27) 
		{
			hideCalendar()
		}
	}
	document.onclick = function hidecal2 () { 		
		if (!bShow)
		{
			hideCalendar()
		}
		bShow = false
	}

	if(ie)
	{
		init()
	}
	else
	{
		window.onload=init
	}