calender textbox without ajax

1.在工程文件下面新建文件夹"js",然后向其中添加JavaScript.js新建项，重命名为calendar.js。
2.向calendar.js中写入代码，
var cal;
var isFocus=false; //是否为焦点
//function SelectDate(obj,strFormat) //两个参数改为只传一个
function SelectDate(obj)
{
    var date = new Date();
    var by = date.getFullYear()-80; //最小值 → 80 年前
    var ey = date.getFullYear()+20; //最大值 → 20 年后
    cal = (cal==null) ? new Calendar(by,ey,0) : cal;    //初始化为中文版，1为英文版
    //cal.dateFormatStyle = strFormat; // 默认显示格式为:yyyy-MM-dd,还可显示 yyyy/MM/dd
    cal.show(obj);
}
/**//* 返回日期 */
String.prototype.toDate = function(style){
var y = this.substring(style.indexOf('y'),style.lastIndexOf('y')+1);//年
var m = this.substring(style.indexOf('M'),style.lastIndexOf('M')+1);//月
var d = this.substring(style.indexOf('d'),style.lastIndexOf('d')+1);//日
if(isNaN(y)) y = new Date().getFullYear();
if(isNaN(m)) m = new Date().getMonth();
if(isNaN(d)) d = new Date().getDate();
var dt ;
eval ("dt = new Date('"+ y+"','"+(m-1)+"','"+ d +"')");
return dt;
}
/**//* 格式化日期 */
Date.prototype.format = function(style){
var o = {
    "M+" : this.getMonth() + 1,//month
    "d+" : this.getDate(),//day
    "h+" : this.getHours(),//hour
    "m+" : this.getMinutes(),//minute
    "s+" : this.getSeconds(),//second
    "w+" : "天一二三四五六".charAt(this.getDay()),//week
    "q+" : Math.floor((this.getMonth() + 3) / 3),//quarter
    "S" : this.getMilliseconds() //millisecond
}
if(/(y+)/.test(style)){
    style = style.replace(RegExp.$1,(this.getFullYear() + "").substr(4 - RegExp.$1.length));
}
for(var k in o){
    if(new RegExp("("+ k +")").test(style)){
      style = style.replace(RegExp.$1,RegExp.$1.length == 1 ? o[k] :
        ("00" + o[k]).substr(("" + o[k]).length));
    }
}
return style;
};

/**//*
* 日历类
* @param   beginYear 2009
* @param   endYear   2015
* @param   lang      0(中文)|1(英语) 可自由扩充
* @param   dateFormatStyle "yyyy-MM-dd";
*/
function Calendar(beginYear,endYear,lang,dateFormatStyle){
this.beginYear = 2009;
this.endYear = 2015;
this.lang = 0;            //0(中文) | 1(英文)
this.dateFormatStyle = "yyyy-MM-dd";

if (beginYear != null && endYear != null){
    this.beginYear = beginYear;
    this.endYear = endYear;
}
if (lang != null){
    this.lang = lang
}

if (dateFormatStyle != null){
    this.dateFormatStyle = dateFormatStyle
}

this.dateControl = null;
this.panel = this.getElementById("calendarPanel");
this.container = this.getElementById("ContainerPanel");
this.form = null;

this.date = new Date();
this.year = this.date.getFullYear();
this.month = this.date.getMonth();


this.colors = {
"cur_word"      : "#FFFFFF",//当日日期文字颜色
"cur_bg"        : "#83A6F4",//当日日期单元格背影色
"sel_bg"        : "#FFCCCC",//已被选择的日期单元格背影色
"sun_word"      : "#FF0000",//星期天文字颜色
"sat_word"      : "#0000FF",//星期六文字颜色
"td_word_light" : "#333333",//单元格文字颜色
"td_word_dark" : "#CCCCCC",//单元格文字暗色
"td_bg_out"     : "#EFEFEF",//单元格背影色
"td_bg_over"    : "#FFCC00",//单元格背影色
"tr_word"       : "#FFFFFF",//日历头文字颜色
"tr_bg"         : "#666666",//日历头背影色
"input_border" : "#CCCCCC",//input控件的边框颜色
"input_bg"      : "#EFEFEF"   //input控件的背影色
}

this.draw();
this.bindYear();
this.bindMonth();
this.changeSelect();
this.bindData();
}

/**//*
* 日历类属性（语言包，可自由扩展）
*/
Calendar.language ={
"year"   : [[""],[""]],"months" : [["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"],["JAN","FEB","MAR","APR","MAY","JUN","JUL","AUG","SEP","OCT","NOV","DEC"]
         ],"weeks" : [["日","一","二","三","四","五","六"],["SUN","MON","TUR","WED","THU","FRI","SAT"]
         ],"clear" : [["清空"],["CLS"]],"today" : [["今天"],["TODAY"]],"close" : [["关闭"],["CLOSE"]]
}

Calendar.prototype.draw = function(){
calendar = this;

var mvAry = [];
mvAry[mvAry.length] = ' <div name="calendarForm" style="margin: 0px;">';
mvAry[mvAry.length] = '    <table width="100%" border="0" cellpadding="0" cellspacing="1">';
mvAry[mvAry.length] = '      <tr>';
mvAry[mvAry.length] = '        <th align="left" width="1%"><input style="border: 1px solid ' + calendar.colors["input_border"] + ';background-color:' + calendar.colors["input_bg"] + ';width:16px;height:20px;" name="prevMonth" type="button" id="prevMonth" value="<" /></th>';
mvAry[mvAry.length] = '        <th align="center"width="98%"><select name="calendarYear" id="calendarYear" style="width:48%;font-size:12px;"></select><select name="calendarMonth" id="calendarMonth" style="font-size:12px;width:48%;"></select></th>';
mvAry[mvAry.length] = '        <th align="right" width="1%"><input style="border: 1px solid ' + calendar.colors["input_border"] + ';background-color:' + calendar.colors["input_bg"] + ';width:16px;height:20px;" name="nextMonth" type="button" id="nextMonth" value=">" /></th>';
mvAry[mvAry.length] = '      </tr>';
mvAry[mvAry.length] = '    </table>';
mvAry[mvAry.length] = '    <table id="calendarTable" width="100%" style="border:0px solid #CCCCCC;background-color:#FFFFFF" border="0" cellpadding="3" cellspacing="1">';
mvAry[mvAry.length] = '      <tr>';
for(var i = 0; i < 7; i++){
    mvAry[mvAry.length] = '      <th style="font-weight:normal;background-color:' + calendar.colors["tr_bg"] + ';color:' + calendar.colors["tr_word"] + ';">' + Calendar.language["weeks"][this.lang][i] + '</th>';
}
mvAry[mvAry.length] = '      </tr>';
for(var i = 0; i < 6;i++){
    mvAry[mvAry.length] = '    <tr align="center">';
    for(var j = 0; j < 7; j++){
      if (j == 0){
        mvAry[mvAry.length] = ' <td style="cursor:default;color:' + calendar.colors["sun_word"] + ';"></td>';
      } else if(j == 6){
        mvAry[mvAry.length] = ' <td style="cursor:default;color:' + calendar.colors["sat_word"] + ';"></td>';
      } else{
        mvAry[mvAry.length] = ' <td style="cursor:default;"></td>';
      }
    }
    mvAry[mvAry.length] = '    </tr>';
}
mvAry[mvAry.length] = '      <tr style="background-color:' + calendar.colors["input_bg"] + ';">';
mvAry[mvAry.length] = '        <th colspan="2"><input name="calendarClear" type="button" id="calendarClear" value="' + Calendar.language["clear"][this.lang] + '" style="border: 1px solid ' + calendar.colors["input_border"] + ';background-color:' + calendar.colors["input_bg"] + ';width:100%;height:20px;font-size:12px;"/></th>';
mvAry[mvAry.length] = '        <th colspan="3"><input name="calendarToday" type="button" id="calendarToday" value="' + Calendar.language["today"][this.lang] + '" style="border: 1px solid ' + calendar.colors["input_border"] + ';background-color:' + calendar.colors["input_bg"] + ';width:100%;height:20px;font-size:12px;"/></th>';
mvAry[mvAry.length] = '        <th colspan="2"><input name="calendarClose" type="button" id="calendarClose" value="' + Calendar.language["close"][this.lang] + '" style="border: 1px solid ' + calendar.colors["input_border"] + ';background-color:' + calendar.colors["input_bg"] + ';width:100%;height:20px;font-size:12px;"/></th>';
mvAry[mvAry.length] = '      </tr>';
mvAry[mvAry.length] = '    </table>';
mvAry[mvAry.length] = ' </div>';
this.panel.innerHTML = mvAry.join("");

var obj = this.getElementById("prevMonth");
obj.onclick = function (){calendar.goPrevMonth(calendar);}
obj.onblur = function (){calendar.onblur();}
this.prevMonth= obj;

obj = this.getElementById("nextMonth");
obj.onclick = function (){calendar.goNextMonth(calendar);}
obj.onblur = function (){calendar.onblur();}
this.nextMonth= obj;


obj = this.getElementById("calendarClear");
obj.onclick = function (){calendar.dateControl.value = "";calendar.hide();}
this.calendarClear = obj;

obj = this.getElementById("calendarClose");
obj.onclick = function (){calendar.hide();}
this.calendarClose = obj;

obj = this.getElementById("calendarYear");
obj.onchange = function (){calendar.update(calendar);}
obj.onblur = function (){calendar.onblur();}
this.calendarYear = obj;

obj = this.getElementById("calendarMonth");
with(obj)
{
    onchange = function (){calendar.update(calendar);}
    onblur = function (){calendar.onblur();}
}this.calendarMonth = obj;

obj = this.getElementById("calendarToday");
obj.onclick = function (){
    var today = new Date();
    calendar.date = today;
    calendar.year = today.getFullYear();
    calendar.month = today.getMonth();
    calendar.changeSelect();
    calendar.bindData();
    calendar.dateControl.value = today.format(calendar.dateFormatStyle);
    calendar.hide();
}
this.calendarToday = obj;
}

//年份下拉框绑定数据
Calendar.prototype.bindYear = function(){
var cy = this.calendarYear;
cy.length = 0;
for (var i = this.beginYear; i <= this.endYear; i++){
    cy.options[cy.length] = new Option(i + Calendar.language["year"][this.lang],i);
}
}

//月份下拉框绑定数据
Calendar.prototype.bindMonth = function(){
var cm = this.calendarMonth;
cm.length = 0;
for (var i = 0; i < 12; i++){
    cm.options[cm.length] = new Option(Calendar.language["months"][this.lang][i],i);
}
}

//向前一月
Calendar.prototype.goPrevMonth = function(e){
if (this.year == this.beginYear && this.month == 0){return;}
this.month--;
if (this.month == -1){
    this.year--;
    this.month = 11;
}
this.date = new Date(this.year,this.month,1);
this.changeSelect();
this.bindData();
}

//向后一月
Calendar.prototype.goNextMonth = function(e){
if (this.year == this.endYear && this.month == 11){return;}
this.month++;
if (this.month == 12){
    this.year++;
    this.month = 0;
}
this.date = new Date(this.year,1);
this.changeSelect();
this.bindData();
}

//改变SELECT选中状态
Calendar.prototype.changeSelect = function(){
var cy = this.calendarYear;
var cm = this.calendarMonth;
for (var i= 0; i < cy.length; i++){
    if (cy.options[i].value == this.date.getFullYear()){
      cy[i].selected = true;
      break;
    }
}
for (var i= 0; i < cm.length; i++){
    if (cm.options[i].value == this.date.getMonth()){
      cm[i].selected = true;
      break;
    }
}
}

//更新年、月
Calendar.prototype.update = function (e){
this.year = e.calendarYear.options[e.calendarYear.selectedIndex].value;
this.month = e.calendarMonth.options[e.calendarMonth.selectedIndex].value;
this.date = new Date(this.year,1);
this.changeSelect();
this.bindData();
}

//绑定数据到月视图
Calendar.prototype.bindData = function (){
var calendar = this;
var dateArray = this.getMonthViewArray(this.date.getFullYear(),this.date.getMonth());
var tds = this.getElementById("calendarTable").getElementsByTagName("td");
for(var i = 0; i < tds.length; i++){
tds[i].style.backgroundColor = calendar.colors["td_bg_out"];
    tds[i].onclick = function () {return;}
    tds[i].onmouSEOver = function () {return;}
    tds[i].onmouSEOut = function () {return;}
    if (i > dateArray.length - 1) break;
    tds[i].innerHTML = dateArray[i];
    if (dateArray[i] != ""){
      tds[i].onclick = function () {
        if (calendar.dateControl != null){
          calendar.dateControl.value = new Date(calendar.date.getFullYear(),calendar.date.getMonth(),this.innerHTML).format(calendar.dateFormatStyle);
        }
        calendar.hide();
      }
      tds[i].onmouSEOver = function () {
        this.style.backgroundColor = calendar.colors["td_bg_over"];
      }
      tds[i].onmouSEOut = function () {
        this.style.backgroundColor = calendar.colors["td_bg_out"];
      }
      if (new Date().format(calendar.dateFormatStyle) ==
          new Date(calendar.date.getFullYear(),dateArray[i]).format(calendar.dateFormatStyle)) {
        tds[i].style.backgroundColor = calendar.colors["cur_bg"];
        tds[i].onmouSEOver = function () {
          this.style.backgroundColor = calendar.colors["td_bg_over"];
        }
        tds[i].onmouSEOut = function () {
          this.style.backgroundColor = calendar.colors["cur_bg"];
        }
      }//end if
      
      //设置已被选择的日期单元格背影色
      if (calendar.dateControl != null && calendar.dateControl.value == new Date(calendar.date.getFullYear(),dateArray[i]).format(calendar.dateFormatStyle)) {
        tds[i].style.backgroundColor = calendar.colors["sel_bg"];
        tds[i].onmouSEOver = function () {
          this.style.backgroundColor = calendar.colors["td_bg_over"];
        }
        tds[i].onmouSEOut = function () {
          this.style.backgroundColor = calendar.colors["sel_bg"];
        }
      }
    }
}
}

//根据年、月得到月视图数据(数组形式)
Calendar.prototype.getMonthViewArray = function (y,m) {
var mvArray = [];
var dayOfFirstDay = new Date(y,m,1).getDay();
var daysOfMonth = new Date(y,m + 1,0).getDate();
for (var i = 0; i < 42; i++) {
    mvArray[i] = "";
}
for (var i = 0; i < daysOfMonth; i++){
    mvArray[i + dayOfFirstDay] = i + 1;
}
return mvArray;
}

//扩展 document.getElementById(id) 多浏览器兼容性 from meizz tree source
Calendar.prototype.getElementById = function(id){
if (typeof(id) != "string" || id == "") return null;
if (document.getElementById) return document.getElementById(id);
if (document.all) return document.all(id);
try {return eval(id);} catch(e){ return null;}
}

//扩展 object.getElementsByTagName(tagName)
Calendar.prototype.getElementsByTagName = function(object,tagName){
if (document.getElementsByTagName) return document.getElementsByTagName(tagName);
if (document.all) return document.all.tags(tagName);
}

//取得HTML控件绝对位置
Calendar.prototype.getAbsPoint = function (e){
var x = e.offsetLeft;
var y = e.offsetTop;
while(e = e.offsetParent){
    x += e.offsetLeft;
    y += e.offsetTop;
}
return {"x": x,"y": y};
}

//显示日历
Calendar.prototype.show = function (dateObj,popControl) {
if (dateObj == null){
    throw new Error("arguments[0] is necessary")
}
this.dateControl = dateObj;

this.date = (dateObj.value.length > 0) ? new Date(dateObj.value.toDate(this.dateFormatStyle)) : new Date() ;//若为空则显示当前月份
this.year = this.date.getFullYear();
this.month = this.date.getMonth();
this.changeSelect();
this.bindData();
if (popControl == null){
    popControl = dateObj;
}
var xy = this.getAbsPoint(popControl);
this.panel.style.left = xy.x -25 + "px";
this.panel.style.top = (xy.y + dateObj.offsetHeight) + "px";

this.panel.style.display = "";
this.container.style.display = "";

dateObj.onblur = function(){calendar.onblur();}
this.container.onmouSEOver = function(){isFocus=true;}
this.container.onmouSEOut = function(){isFocus=false;}
}

//隐藏日历
Calendar.prototype.hide = function() {
this.panel.style.display = "none";
this.container.style.display = "none";
isFocus=false;
}

//焦点转移时隐藏日历
Calendar.prototype.onblur = function() {
    if(!isFocus){this.hide();}
}
document.write('<div id="ContainerPanel" style="display:none;"><div id="calendarPanel" style="position: absolute;display: none;z-index: 9999;');
document.write('background-color: #FFFFFF;border: 1px solid #CCCCCC;width:175px;font-size:12px;margin-left:25px;"></div>');
if(document.all)
{
document.write('<iframe style="position:absolute;z-index:2000;width:expression(this.prevIoUsSibling.offsetWidth);');
document.write('height:expression(this.prevIoUsSibling.offsetHeight);');
document.write('left:expression(this.prevIoUsSibling.offsetLeft);top:expression(this.prevIoUsSibling.offsetTop);');
document.write('display:expression(this.prevIoUsSibling.style.display);" scrolling="no" frameborder="no"></iframe>');
}
document.write('</div>');
3.保存文件后，即完成了js日历控件的编写。
4.在相应需要日历控件的源处写在head标签下面写
<script type="text/javascript" src="../js/calendar.js"></script>
其中，src是你JavaScript的位置
5.所有填写日期的TextBox，加这两个属性：ReadOnly="True" onclick="SelectDate(this)"
原文链接：https://www.f2er.com/ajax/165319.html
calender textbox without ajax

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