asp.net日历控件开发(1)

    现在网站上有很多日历控件，有弹出窗口形式的，纯js脚本的，有基于Extjs,jQuery版本的，但是却比较符合外国人的习惯，
还有例如My97DatePicker日历控件，功能虽然强大，但是就一个日历控件却搞这么多文件，还不允许打散其文件结构，麻烦。
还有Microsoft提供的AjaxControlToolkit，但是为了一个日历控件引用这个库，确实感到很不爽。非本人愿意重复造轮子，
确实没看到有一个让自己觉得比较爽的日历控件。于是自己js写了个日历，本人提供所有源码下载，不过本人不擅长于界面方面，
如果你在我的基础上调整得比较好看或者修改了一些bug，或者你有更好的，希望你能发我一个，不胜感激。我的QQ：273673634。
在接下来我准备将其封装成asp.net控件，以后拖放就更方便了。
日历样式：

Code
  <style type="text/css">
    .monthspan{width:45px;border:1px solid #0099CC;height:30px;font-size:12px;padding:5px 0px 0px 5px;}
    .yearspan{width:45px;border:1px solid #0099CC;height:30px;font-size:12px;padding:5px 0px 0px 5px;}
    .dayspan{width:25px;border:1px solid #0099CC;height:18px;font-size:12px;padding:2px 0px 0px 3px;}
    .notthismonth{color:#cccccc;}
    .weektag{font-size:12px;height:20px;}
    .yeartitle{font-size:13px;font-weight:bold;width:120px;text-align:center;cursor:pointer;}
    .todayspan {font-size:12px;color:Red;font-weight:bold;width:180px;}
    .selected {color:Red;}
    .prevTag{font-family:Webdings;cursor:hand;font-size:14px;}
    .nextTag{font-family:Webdings;cursor:hand;font-size:14px;}
    .prevTagEx{font-family:Webdings;cursor:hand;font-size:14px;}
    .nextTagEx{font-family:Webdings;cursor:hand;font-size:14px;}
    .calendarheader {background-color:#FFCC00;}
  </style>

js脚本：

Code
  <script type="text/javascript" src="jquery.js"></script>
  <script type="text/javascript">
      var WeekZH = ['日', '一', '二', '三', '四', '五', '六'];
      var MonthZH = ['一月', '二月', '三月', '四月', '五月', '六月', '七月', '八月', '九月', '十月', '十一月', '十二月'];
      var CalendarGlobalView = null;

      function Calendar(input, link, format, year, month, day, mindate, maxdate) 
      {
            var date = new Date();

            this.Year = year==null||typeof(year) == "undefined" ? date.getFullYear() : year;
            this.Month = month == null || typeof (month) == "undefined" ? date.getMonth() : month;
            this.Day = day == null || typeof (day) == "undefined" ? date.getDate() : day;
            this.Format = format == null || typeof (format) == "undefined" ? "yyyy-MM-dd" : format;
            this.Mindate = mindate == null || typeof (mindate) == "undefined" ? new Date("1900", "01", "01") : new Date(mindate.split('-')[0], mindate.split('-')[1], mindate.split('-')[2]);
            this.Maxdate = maxdate == null || typeof (maxdate) == "undefined" ? new Date("9999", "01", "01") : new Date(maxdate.split('-')[0], maxdate.split('-')[1], maxdate.split('-')[2]);
            this.Date = new Date(this.Year,this.Month,this.Day);
            this.DateStr=this.Year+"-"+this.Month+"-"+this.Day;
            this.Week = WeekZH[this.Date.getDay()];
            this._currentView = null;
            this._monthView = null;
            this._yearView = null;
            this._dayView = null;
            this._inputCtrl = document.getElementById(input);
            this._linkCtrl = document.getElementById(link); //null;
      }

      Calendar.prototype =
    {
        initialize: function() {
            var context = this;
            $(document).bind("click", function() {
                if (context._currentView != null)
                    context.hide();
            })
        },

        show: function() {
            if (this.Format == "yyyy-MM-dd") { this.showDayView(this.DateStr); }
            if (this.Format == "yyyy/MM/dd") { this.showDayView(this.DateStr); }
            if (this.Format == "yyyyMMdd") { this.showDayView(this.DateStr); }
            if (this.Format == "yyyy-MM") { this.showMonthView(this.Year + "-" + this.Month); }
            if (this.Format == "yyyy/MM") { this.showMonthView(this.Year + "-" + this.Month); }
            if (this.Format == "yyyyMM") { this.showMonthView(this.Year + "-" + this.Month); }
            if (this.Format == "yyyy") { this.showYearView(this.Year); }
        },
        hide: function() { this._currentView.parentNode.removeChild(this._currentView) },

        getPosition: function(obj) {
            var left = obj.offsetLeft;
            var top = obj.offsetTop;
            var parent = obj.parentNode;
            while (parent.tagName != 'BODY') {
                if (parent.style.position == "absolute") {
                    parent = parent.offsetParent;
                    continue;
                }
                if (parent.tagName == "DIV") {
                    top = top - parent.scrollTop;
                    left = left - parent.scrollLeft;
                }
                left += parent.offsetLeft;
                top += parent.offsetTop;
                parent = parent.parentNode;
            }

            //return { x: left + obj.offsetWidth, y: top + obj.offsetHeight };
            return { x: left, y: top + obj.offsetHeight };
        },

        formatDate: function(date, fmt) {
            var year = date.getFullYear();
            var month = date.getMonth();
            var day = date.getDate();
            var datestr = year + "-" + (month + 1) + "-" + day;
            if (fmt == 'yyyyMMdd')
                return datestr.replace(/-/g, '');
            else if (fmt == 'yyyy/MM/dd')
                return datestr.replace(/-/g, '/');
            else
                return datestr;
        },
        daydiff: function(date1, date2) {
            var timediff = date1.getTime() - date2.getTime();
            var daysdiff = Math.floor(timediff / (24 * 60 * 60 * 1000));
            return daysdiff;
        },
        showDayView: function(val) {
            if (CalendarGlobalView != null) CalendarGlobalView.parentNode.removeChild(CalendarGlobalView);
            var year = new Number(val.split('-')[0]);
            var month = new Number(val.split('-')[1]);
            var day = new Number(val.split('-')[2]);
            var date = new Date(year + "/" + month + "/" + "1");
            var inputdate = new Date(year + "/" + month + "/" + day);
            var week = date.getDay();
            this.datediff(date, -1 * week);
            var DayZH = [];
            for (var i = 0; i < 42; i++) {
                DayZH.push(new Date(date.getFullYear() + "/" + (date.getMonth() + 1) + "/" + date.getDate()));
                this.datediff(date, 1)
            }

            var html = "";
            var dayView = this._createView();
            html = "<table border='0' style='width:100%;' cellpadding='0' cellspacing='1'><tr><td colspan='7' class='calendarheader'><span class='prevTagEx'>7</span><span class='prevTag'>3</span><span class='yeartitle'>" + year + "年" + month + "月</span><span class='nextTag'>4</span><span class='nextTagEx'>8</span></td></tr>";
            html += "<tr>";
            for (var i = 0; i < 7; i++) {
                html += "<td class='weektag'>" + WeekZH[i] + "</td>";
            }
            html += "</tr>";
            for (var j = 0; j < 6; j++) {
                html += "<tr>";
                for (var i = 0; i < 7; i++) {
                    var c = j * 7 + i;
                    if (this.daydiff(inputdate, DayZH[c]) == 0) {
                        html += "<td style='height:20px;'><span class='dayspan selected' val='" + this.formatDate(DayZH[c]) + "'>" + DayZH[c].getDate() + "</span></td>";
                    }
                    else {
                        if (DayZH[c].getMonth() != inputdate.getMonth())
                            html += "<td style='height:20px;'><span class='dayspan notthismonth' val='" + this.formatDate(DayZH[c]) + "'>" + DayZH[c].getDate() + "</span></td>";
                        else
                            html += "<td style='height:20px;'><span class='dayspan' val='" + this.formatDate(DayZH[c]) + "'>" + DayZH[c].getDate() + "</span></td>";
                    }
                }
                html += "</tr>";
            }
            html += "<tr><td colspan='7' style='height:20px;'><span class='todayspan'>今天是：" + new Date().toLocaleDateString() + "</span></td></tr>";
            html += "</table>";
            dayView.innerHTML = html;

            this._currentView = dayView;
            CalendarGlobalView = this._currentView;
            var context = this;
            //绑定日单击事件
            $(dayView).find('.dayspan').each(function() {
                $(this).bind("click", function() {
                    var year = $(this).attr('val').split('-')[0];
                    var month = $(this).attr('val').split('-')[1];
                    var day = $(this).attr('val').split('-')[2];
                    context._inputCtrl.value = context.formatDate(new Date(year, month - 1, day), context.Format);
                    context.hide();
                });
                $(this).bind("mouseover", function() { $(this).attr("style", "cursor:hand;background-color:#8F96E4"); })
                $(this).bind("mouseout", function() { $(this).attr("style", ""); })
            });

            $(dayView).find('.prevTag').each(function() {
                $(this).bind("click", function() {
                    context.hide();
                    month = month - 1;
                    year = new Number(year);
                    if (month < 0) {
                        year = year - 1;
                        month = 12;
                    }
                    context.showDayView(year + "-" + month + "-" + day);
                });
            });
            $(dayView).find('.nextTag').each(function() {
                $(this).bind("click", function() {
                    context.hide();
                    month = month + 1;
                    year = new Number(year);
                    if (month > 12) {
                        year = year + 1;
                        month = 1;
                    }
                    context.showDayView(year + "-" + month + "-" + day);
                });
            });
            $(dayView).find('.prevTagEx').each(function() {
                $(this).bind("click", function() {
                    context.hide();
                    year = new Number(year) - 1;
                    context.showDayView(year + "-" + month + "-" + day);
                });
            });
            $(dayView).find('.nextTagEx').each(function() {
                $(this).bind("click", function() {
                    context.hide();
                    year = new Number(year) + 1;
                    context.showDayView(year + "-" + month + "-" + day);
                });
            });
            $(dayView).find('.yeartitle').each(function() {
                $(this).bind("click", function() {
                    context.hide();
                    context.showYearView(year, true);
                });
            });
        },

        datediff: function(date, days) {
            date = date.setTime(date.getTime() + days * 24 * 60 * 60 * 1000);
        },

        _createView: function() {
            var el = this._linkCtrl;
            var view = document.createElement("DIV");
            var pos = this.getPosition(el);
            view.style.backgroundColor = "lightyellow";
            view.style.border = "solid #5F5F5F 1px";
            view.style.left = pos.x + "px";
            view.style.top = pos.y + "px";
            view.style.width = "180px";
            view.style.height = "180px";
            view.style.position = "absolute";
            view.style.zIndex = "1000";
            el.parentNode.appendChild(view);
            return view;
        },

        showMonthView: function(val, ifgo) {
            if (CalendarGlobalView != null) CalendarGlobalView.parentNode.removeChild(CalendarGlobalView);
            var year = val.split('-')[0];
            var month = val.split('-')[1];
            month = new Number(month);
            var html = "";
            var monthView = this._createView();
            html = "<table border='0' cellpadding='0' cellspacing='1'><tr><td colspan='4' class='calendarheader'><span class='prevTagEx'>7</span><span class='prevTag'>3</span><span class='yeartitle'>" + year + "年" + month + "月</span><span class='nextTag'>4</span><span class='nextTagEx'>8</span></td></tr>";
            for (var j = 0; j < 3; j++) {
                html += "<tr>";
                for (var i = 0; i < 4; i++) {
                    var c = j * 4 + i;
                    if ((c + 1) == month)
                        html += "<td style='height:20px;'><span class='monthspan selected' val='" + (c + 1) + "'>" + MonthZH[c] + "</span></td>";
                    else
                        html += "<td style='height:20px;'><span class='monthspan' val='" + (c + 1) + "'>" + MonthZH[c] + "</span></td>";
                }
                html += "</tr>";
            }
            html += "<tr><td colspan='4' style='height:20px;'><span class='todayspan'>今天是：" + new Date().toLocaleDateString() + "</span></td></tr>";
            html += "</table>";
            monthView.innerHTML = html;
            this._currentView = monthView;
            CalendarGlobalView = this._currentView;
            var context = this;
            //绑定月单击事件
            $(monthView).find('.monthspan').each(function() {
            $(this).bind("click", function() {
                    if (ifgo && context.Format.indexOf('dd')>0) {
                        context.hide();
                        context.showDayView(year + "-" + $(this).attr('val') + "-1");
                    }
                    else {
                        if (context.Format == 'yyyy/MM')
                            context._inputCtrl.value = year + "/" + $(this).attr('val');
                        else if (context.Format == 'yyyyMM')
                            context._inputCtrl.value = year + $(this).attr('val');
                        else
                            context._inputCtrl.value = year + "-" + $(this).attr('val');

                        context.hide();
                    }
                });
                $(this).bind("mouseover", function() { $(this).attr("style", "cursor:hand;background-color:#8F96E4"); })
                $(this).bind("mouseout", function() { $(this).attr("style", ""); })
            });
            $(monthView).find('.prevTag').each(function() {
                $(this).bind("click", function() {
                    context.hide();
                    month = month - 1;
                    year = new Number(year);
                    if (month < 0) {
                        year = year - 1;
                        month = 12;
                    }
                    context.showMonthView(year + "-" + month);
                });
            });
            $(monthView).find('.nextTag').each(function() {
                $(this).bind("click", function() {
                    context.hide();
                    month = month + 1;
                    year = new Number(year);
                    if (month > 12) {
                        year = year + 1;
                        month = 1;
                    }
                    context.showMonthView(year + "-" + month);
                });
            });
            $(monthView).find('.prevTagEx').each(function() {
                $(this).bind("click", function() {
                    context.hide();
                    year = new Number(year) - 1;
                    context.showMonthView(year + "-" + month);
                });
            });
            $(monthView).find('.nextTagEx').each(function() {
                $(this).bind("click", function() {
                    context.hide();
                    year = new Number(year) + 1;
                    context.showMonthView(year + "-" + month);
                });
            });
            $(monthView).find('.yeartitle').each(function() {
                $(this).bind("click", function() {
                    context.hide();
                    context.showYearView(year, true);
                });
            });
        },

        showYearView: function(val, ifgo) {
            if (CalendarGlobalView != null) CalendarGlobalView.parentNode.removeChild(CalendarGlobalView);
            var yearView = this._createView();
            var year = val;
            if (isNaN(parseInt(val))) year = new Date().getFullYear();
            var minYear = new Number(year) - 6;
            var maxYear = new Number(year) + 5;
            var yearArr = [];
            for (var i = 0; i < 12; i++)
                yearArr.push(minYear + i);
            var html = "";
            html = "<table border='0' cellpadding='0' cellspacing='1'><tr><td colspan='4' class='calendarheader'><span class='prevTagEx'>7</span><span class='prevTag'>3</span><span class='yeartitle'>" + minYear + "至" + maxYear + "</span><span class='nextTag'>4</span><span class='nextTagEx'>8</span></td></tr>"
            for (var j = 0; j < 3; j++) {
                html += "<tr>";
                for (var i = 0; i < 4; i++) {
                    var c = j * 4 + i;
                    if (yearArr[c] == new Number(year))
                        html += "<td style='height:20px;'><span class='yearspan selected' val='" + yearArr[c] + "'>" + yearArr[c] + "</span></td>";
                    else
                        html += "<td style='height:20px;'><span class='yearspan' val='" + yearArr[c] + "'>" + yearArr[c] + "</span></td>";
                }
                html += "</tr>";
            }
            html += "<tr><td colspan='4' style='height:20px;'><span class='todayspan'>今天是：" + new Date().toLocaleDateString() + "</span></td></tr>";
            html += "</table>";
            yearView.innerHTML = html;
            this._currentView = yearView;
            CalendarGlobalView = this._currentView;
            var context = this;
            //绑定年单击事件
            $(yearView).find('.yearspan').each(function() {
                $(this).bind("click", function() {
                    if (ifgo) {
                        context.hide();
                        context.showMonthView($(this).attr('val') + "-1", ifgo);
                    }
                    else {
                        context._inputCtrl.value = $(this).attr('val');
                        context.hide();
                    }
                });
                $(this).bind("mouseover", function() { $(this).attr("style", "cursor:hand;background-color:#8F96E4"); })
                $(this).bind("mouseout", function() { $(this).attr("style", ""); })
            });
            $(yearView).find('.prevTag').each(function() {
                $(this).bind("click", function() {
                    context.hide();
                    context.showYearView(new Number(year) - 1);
                });
            });
            $(yearView).find('.nextTag').each(function() {
                $(this).bind("click", function() {
                    context.hide();
                    context.showYearView(new Number(year) + 1);
                });
            });
            $(yearView).find('.prevTagEx').each(function() {
                $(this).bind("click", function() {
                    context.hide();
                    context.showYearView(new Number(year) - 10);
                });
            });
            $(yearView).find('.nextTagEx').each(function() {
                $(this).bind("click", function() {
                    context.hide();
                    context.showYearView(new Number(year) + 10);
                });
            });
        }
    }

  </script>

页面测试和调用

Code
<script type="text/javascript">
    var cal = new Calendar('txt','txt','yyyy-MM-dd');
    cal.show();
</script>
<div style="width:200px;height:200px;border:1px solid #f00;over-flow:auto">
    <input type="text" id="txt" />
    <div style="width:600px;height:600px;border:1px solid #000;margin:60 80 90 90;padding:60 80 90 90;" id="divp">
    <input type="button" onmousedown="ButtonClick()" value="测试" id='btn'/>
    </div>
 </div>

日历的三种视图：