能实现点击日期把日期赋值给文本框的js日历控件
建一个名为selectDate.js的文件，把下面代码粘贴进去保存
js日历控件代码
1 <!-- 2 var cal; 3 var isFocus=false; //是否为焦点 4 //function SelectDate(obj,strFormat) //两个参数改为只传一个 5 function SelectDate(obj) 6 { 7 var date = new Date(); 8 var by = date.getFullYear()-10; //最小值 → 10 年前 9 var ey = date.getFullYear()+10; //最大值 → 10 年后 10 cal = (cal==null) ? new Calendar(by, ey, 0) : cal; //初始化为中文版，1为英文版 11 //cal.dateFormatStyle = strFormat; // 默认显示格式为:yyyy-MM-dd ,还可显示 yyyy/MM/dd 12 cal.show(obj); 13 } 14 /**//* 返回日期 */ 15 String.prototype.toDate = function(style){ 16 var y = this.substring(style.indexOf('y'),style.lastIndexOf('y')+1);//年 17 var m = this.substring(style.indexOf('M'),style.lastIndexOf('M')+1);//月 18 var d = this.substring(style.indexOf('d'),style.lastIndexOf('d')+1);//日 19 if(isNaN(y)) y = new Date().getFullYear(); 20 if(isNaN(m)) m = new Date().getMonth(); 21 if(isNaN(d)) d = new Date().getDate(); 22 var dt ; 23 eval ("dt = new Date('"+ y+"', '"+(m-1)+"','"+ d +"')"); 24 return dt; 25 } 26 /**//* 格式化日期 */ 27 Date.prototype.format = function(style){ 28 var o = { 29 "M+" : this.getMonth() + 1, //month 30 "d+" : this.getDate(), //day 31 "h+" : this.getHours(), //hour 32 "m+" : this.getMinutes(), //minute 33 "s+" : this.getSeconds(), //second 34 "w+" : "天一二三四五六".charAt(this.getDay()), //week 35 "q+" : Math.floor((this.getMonth() + 3) / 3), //quarter 36 "S" : this.getMilliseconds() //millisecond 37 } 38 if(/(y+)/.test(style)){ 39 style = style.replace(RegExp.$1, 40 (this.getFullYear() + "").substr(4 - RegExp.$1.length)); 41 } 42 for(var k in o){ 43 if(new RegExp("("+ k +")").test(style)){ 44 style = style.replace(RegExp.$1, 45 RegExp.$1.length == 1 ? o[k] : 46 ("00" + o[k]).substr(("" + o[k]).length)); 47 } 48 } 49 return style; 50 }; 51 52 /**//* 53 * 日历类 54 * @param beginYear 1990 55 * @param endYear 2010 56 * @param lang 0(中文)|1(英语) 可自由扩充 57 * @param dateFormatStyle "yyyy-MM-dd"; 58 */ 59 function Calendar(beginYear, endYear, lang, dateFormatStyle){ 60 this.beginYear = 1990; 61 this.endYear = 2010; 62 this.lang = 0; //0(中文) | 1(英文) 63 this.dateFormatStyle = "yyyy-MM-dd"; 64 65 if (beginYear != null && endYear != null){ 66 this.beginYear = beginYear; 67 this.endYear = endYear; 68 } 69 if (lang != null){ 70 this.lang = lang 71 } 72 73 if (dateFormatStyle != null){ 74 this.dateFormatStyle = dateFormatStyle 75 } 76 77 this.dateControl = null; 78 this.panel = this.getElementById("calendarPanel"); 79 this.container = this.getElementById("ContainerPanel"); 80 this.form = null; 81 82 this.date = new Date(); 83 this.year = this.date.getFullYear(); 84 this.month = this.date.getMonth(); 85 86 87 this.colors = { 88 "cur_word" : "#FFFFFF", //当日日期文字颜色 89 "cur_bg" : "#83A6F4", //当日日期单元格背影色 90 "sel_bg" : "#FFCCCC", //已被选择的日期单元格背影色 91 "sun_word" : "#FF0000", //星期天文字颜色 92 "sat_word" : "#0000FF", //星期六文字颜色 93 "td_word_light" : "#333333", //单元格文字颜色 94 "td_word_dark" : "#CCCCCC", //单元格文字暗色 95 "td_bg_out" : "#EFEFEF", //单元格背影色 96 "td_bg_over" : "#FFCC00", //单元格背影色 97 "tr_word" : "#FFFFFF", //日历头文字颜色 98 "tr_bg" : "#666666", //日历头背影色 99 "input_border" : "#CCCCCC", //input控件的边框颜色 100 "input_bg" : "#EFEFEF" //input控件的背影色 101 } 102 103 this.draw(); 104 this.bindYear(); 105 this.bindMonth(); 106 this.changeSelect(); 107 this.bindData(); 108 } 109 110 /**//* 111 * 日历类属性（语言包，可自由扩展） 112 */ 113 Calendar.language ={ 114 "year" : [[""], [""]], 115 "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"], 116 ["JAN","FEB","MAR","APR","MAY","JUN","JUL","AUG","SEP","OCT","NOV","DEC"] 117 ], 118 "weeks" : [["日","一","二","三","四","五","六"], 119 ["SUN","MON","TUR","WED","THU","FRI","SAT"] 120 ], 121 "clear" : [["清空"], ["CLS"]], 122 "today" : [["今天"], ["TODAY"]], 123 "close" : [["关闭"], ["CLOSE"]] 124 } 125 126 Calendar.prototype.draw = function(){ 127 calendar = this; 128 129 var mvAry = []; 130 mvAry[mvAry.length] = ' <div name="calendarForm" style="margin: 0px;">'; 131 mvAry[mvAry.length] = ' <table width="100%" border="0" cellpadding="0" cellspacing="1">'; 132 mvAry[mvAry.length] = ' <tr>'; 133 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>'; 134 mvAry[mvAry.length] = ' <th align="center" width="98%" nowrap="nowrap"><select name="calendarYear" id="calendarYear" style="font-size:12px;"></select><select name="calendarMonth" id="calendarMonth" style="font-size:12px;"></select></th>'; 135 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>'; 136 mvAry[mvAry.length] = ' </tr>'; 137 mvAry[mvAry.length] = ' </table>'; 138 mvAry[mvAry.length] = ' <table id="calendarTable" width="100%" style="border:0px solid #CCCCCC;background-color:#FFFFFF" border="0" cellpadding="3" cellspacing="1">'; 139 mvAry[mvAry.length] = ' <tr>'; 140 for(var i = 0; i < 7; i++){ 141 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>'; 142 } 143 mvAry[mvAry.length] = ' </tr>'; 144 for(var i = 0; i < 6;i++){ 145 mvAry[mvAry.length] = ' <tr align="center">'; 146 for(var j = 0; j < 7; j++){ 147 if (j == 0){ 148 mvAry[mvAry.length] = ' <td style="cursor:default;color:' + calendar.colors["sun_word"] + ';"></td>'; 149 } else if(j == 6){ 150 mvAry[mvAry.length] = ' <td style="cursor:default;color:' + calendar.colors["sat_word"] + ';"></td>'; 151 } else{ 152 mvAry[mvAry.length] = ' <td style="cursor:default;"></td>'; 153 } 154 } 155 mvAry[mvAry.length] = ' </tr>'; 156 } 157 mvAry[mvAry.length] = ' <tr style="background-color:' + calendar.colors["input_bg"] + ';">'; 158 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>'; 159 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>'; 160 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>'; 161 mvAry[mvAry.length] = ' </tr>'; 162 mvAry[mvAry.length] = ' </table>'; 163 mvAry[mvAry.length] = ' </div>'; 164 this.panel.innerHTML = mvAry.join(""); 165 166 var obj = this.getElementById("prevMonth"); 167 obj.onclick = function (){calendar.goPrevMonth(calendar);} 168 obj.onblur = function (){calendar.onblur();} 169 this.prevMonth= obj; 170 171 obj = this.getElementById("nextMonth"); 172 obj.onclick = function (){calendar.goNextMonth(calendar);} 173 obj.onblur = function (){calendar.onblur();} 174 this.nextMonth= obj; 175 176 177 obj = this.getElementById("calendarClear"); 178 obj.onclick = function (){calendar.dateControl.value = "";calendar.hide();} 179 this.calendarClear = obj; 180 181 obj = this.getElementById("calendarClose"); 182 obj.onclick = function (){calendar.hide();} 183 this.calendarClose = obj; 184 185 obj = this.getElementById("calendarYear"); 186 obj.onchange = function (){calendar.update(calendar);} 187 obj.onblur = function (){calendar.onblur();} 188 this.calendarYear = obj; 189 190 obj = this.getElementById("calendarMonth"); 191 with(obj) 192 { 193 onchange = function (){calendar.update(calendar);} 194 onblur = function (){calendar.onblur();} 195 }this.calendarMonth = obj; 196 197 obj = this.getElementById("calendarToday"); 198 obj.onclick = function (){ 199 var today = new Date(); 200 calendar.date = today; 201 calendar.year = today.getFullYear(); 202 calendar.month = today.getMonth(); 203 calendar.changeSelect(); 204 calendar.bindData(); 205 calendar.dateControl.value = today.format(calendar.dateFormatStyle); 206 calendar.hide(); 207 } 208 this.calendarToday = obj; 209 } 210 211 //年份下拉框绑定数据 212 Calendar.prototype.bindYear = function(){ 213 var cy = this.calendarYear; 214 cy.length = 0; 215 for (var i = this.beginYear; i <= this.endYear; i++){ 216 cy.options[cy.length] = new Option(i + Calendar.language["year"][this.lang], i); 217 } 218 } 219 220 //月份下拉框绑定数据 221 Calendar.prototype.bindMonth = function(){ 222 var cm = this.calendarMonth; 223 cm.length = 0; 224 for (var i = 0; i < 12; i++){ 225 cm.options[cm.length] = new Option(Calendar.language["months"][this.lang][i], i); 226 } 227 } 228 229 //向前一月 230 Calendar.prototype.goPrevMonth = function(e){ 231 if (this.year == this.beginYear && this.month == 0){return;} 232 this.month--; 233 if (this.month == -1){ 234 this.year--; 235 this.month = 11; 236 } 237 this.date = new Date(this.year, this.month, 1); 238 this.changeSelect(); 239 this.bindData(); 240 } 241 242 //向后一月 243 Calendar.prototype.goNextMonth = function(e){ 244 if (this.year == this.endYear && this.month == 11){return;} 245 this.month++; 246 if (this.month == 12){ 247 this.year++; 248 this.month = 0; 249 } 250 this.date = new Date(this.year, this.month, 1); 251 this.changeSelect(); 252 this.bindData(); 253 } 254 255 //改变SELECT选中状态 256 Calendar.prototype.changeSelect = function(){ 257 var cy = this.calendarYear; 258 var cm = this.calendarMonth; 259 for (var i= 0; i < cy.length; i++){ 260 if (cy.options[i].value == this.date.getFullYear()){ 261 cy[i].selected = true; 262 break; 263 } 264 } 265 for (var i= 0; i < cm.length; i++){ 266 if (cm.options[i].value == this.date.getMonth()){ 267 cm[i].selected = true; 268 break; 269 } 270 } 271 } 272 273 //更新年、月 274 Calendar.prototype.update = function (e){ 275 this.year = e.calendarYear.options[e.calendarYear.selectedIndex].value; 276 this.month = e.calendarMonth.options[e.calendarMonth.selectedIndex].value; 277 this.date = new Date(this.year, this.month, 1); 278 this.changeSelect(); 279 this.bindData(); 280 } 281 282 //绑定数据到月视图 283 Calendar.prototype.bindData = function (){ 284 var calendar = this; 285 var dateArray = this.getMonthViewArray(this.date.getFullYear(), this.date.getMonth()); 286 var tds = this.getElementById("calendarTable").getElementsByTagName("td"); 287 for(var i = 0; i < tds.length; i++){ 288 tds[i].style.backgroundColor = calendar.colors["td_bg_out"]; 289 tds[i].onclick = function () {return;} 290 tds[i].onmouseover = function () {return;} 291 tds[i].onmouseout = function () {return;} 292 if (i > dateArray.length - 1) break; 293 tds[i].innerHTML = dateArray[i]; 294 if (dateArray[i] != " "){ 295 tds[i].onclick = function () { 296 if (calendar.dateControl != null){ 297 calendar.dateControl.value = new Date(calendar.date.getFullYear(), 298 calendar.date.getMonth(), 299 this.innerHTML).format(calendar.dateFormatStyle); 300 } 301 calendar.hide(); 302 } 303 tds[i].onmouseover = function () { 304 this.style.backgroundColor = calendar.colors["td_bg_over"]; 305 } 306 tds[i].onmouseout = function () { 307 this.style.backgroundColor = calendar.colors["td_bg_out"]; 308 } 309 if (new Date().format(calendar.dateFormatStyle) == 310 new Date(calendar.date.getFullYear(), 311 calendar.date.getMonth(), 312 dateArray[i]).format(calendar.dateFormatStyle)) { 313 tds[i].style.backgroundColor = calendar.colors["cur_bg"]; 314 tds[i].onmouseover = function () { 315 this.style.backgroundColor = calendar.colors["td_bg_over"]; 316 } 317 tds[i].onmouseout = function () { 318 this.style.backgroundColor = calendar.colors["cur_bg"]; 319 } 320 }//end if 321 322 //设置已被选择的日期单元格背影色 323 if (calendar.dateControl != null && calendar.dateControl.value == new Date(calendar.date.getFullYear(), 324 calendar.date.getMonth(), 325 dateArray[i]).format(calendar.dateFormatStyle)) { 326 tds[i].style.backgroundColor = calendar.colors["sel_bg"]; 327 tds[i].onmouseover = function () { 328 this.style.backgroundColor = calendar.colors["td_bg_over"]; 329 } 330 tds[i].onmouseout = function () { 331 this.style.backgroundColor = calendar.colors["sel_bg"]; 332 } 333 } 334 } 335 } 336 } 337 338 //根据年、月得到月视图数据(数组形式) 339 Calendar.prototype.getMonthViewArray = function (y, m) { 340 var mvArray = []; 341 var dayOfFirstDay = new Date(y, m, 1).getDay(); 342 var daysOfMonth = new Date(y, m + 1, 0).getDate(); 343 for (var i = 0; i < 42; i++) { 344 mvArray[i] = " "; 345 } 346 for (var i = 0; i < daysOfMonth; i++){ 347 mvArray[i + dayOfFirstDay] = i + 1; 348 } 349 return mvArray; 350 } 351 352 //扩展 document.getElementById(id) 多浏览器兼容性 from meizz tree source 353 Calendar.prototype.getElementById = function(id){ 354 if (typeof(id) != "string" || id == "") return null; 355 if (document.getElementById) return document.getElementById(id); 356 if (document.all) return document.all(id); 357 try {return eval(id);} catch(e){ return null;} 358 } 359 360 //扩展 object.getElementsByTagName(tagName) 361 Calendar.prototype.getElementsByTagName = function(object, tagName){ 362 if (document.getElementsByTagName) return document.getElementsByTagName(tagName); 363 if (document.all) return document.all.tags(tagName); 364 } 365 366 //取得HTML控件绝对位置 367 Calendar.prototype.getAbsPoint = function (e){ 368 var x = e.offsetLeft; 369 var y = e.offsetTop; 370 while(e = e.offsetParent){ 371 x += e.offsetLeft; 372 y += e.offsetTop; 373 } 374 return {"x": x, "y": y}; 375 } 376 377 //显示日历 378 Calendar.prototype.show = function (dateObj, popControl) { 379 if (dateObj == null){ 380 throw new Error("arguments[0] is necessary") 381 } 382 this.dateControl = dateObj; 383 384 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 385 this.year = this.date.getFullYear(); 386 this.month = this.date.getMonth(); 387 this.changeSelect(); 388 this.bindData(); 389 if (popControl == null){ 390 popControl = dateObj; 391 } 392 var xy = this.getAbsPoint(popControl); 393 this.panel.style.left = xy.x -25 + "px"; 394 this.panel.style.top = (xy.y + dateObj.offsetHeight) + "px"; 395 396 this.panel.style.display = ""; 397 this.container.style.display = ""; 398 399 dateObj.onblur = function(){calendar.onblur();} 400 this.container.onmouseover = function(){isFocus=true;} 401 this.container.onmouseout = function(){isFocus=false;} 402 } 403 404 //隐藏日历 405 Calendar.prototype.hide = function() { 406 this.panel.style.display = "none"; 407 this.container.style.display = "none"; 408 isFocus=false; 409 } 410 411 //焦点转移时隐藏日历 412 Calendar.prototype.onblur = function() { 413 if(!isFocus){this.hide();} 414 } 415 document.write('<div id="ContainerPanel" style="display:none;"><div id="calendarPanel" style="position: absolute;display: none;z-index: 9999;'); 416 document.write('background-color: #FFFFFF;border: 1px solid #CCCCCC;width:175px;font-size:12px;margin-left:25px;"></div>'); 417 if(document.all) 418 { 419 document.write('<iframe style="position:absolute;z-index:2000;width:expression(this.previousSibling.offsetWidth);'); 420 document.write('height:expression(this.previousSibling.offsetHeight);'); 421 document.write('left:expression(this.previousSibling.offsetLeft);top:expression(this.previousSibling.offsetTop);'); 422 document.write('display:expression(this.previousSibling.style.display);" scrolling="no" frameborder="no"></iframe>'); 423 } 424 document.write('</div>'); 425 //-->
使用方法：
在需要使用控件的网页中引用selectDate.js文件
<script type="text/javascript" src="js/selectDate.js"></script>
在需要弹出日历控件的文本框下加上onclick="SelectDate(this)"便可。
示例：
1、
<input id="test" name="test" type="text" onclick="SelectDate(this)"/>
2、asp.net中：
<asp:TextBox ID="buy_time" runat="server" onclick="SelectDate(this)"></asp:TextBox>
