js实现日历

太过爱你忘了你带给我的痛 2023-02-11 07:28 51阅读 0赞

<!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <meta http-equiv="X-UA-Compatible" content="ie=edge">
        <title>Document</title>
    </head>
    <body>
        <div style="width:100%;">
            <input id="txtDt" type="text" />
          </div>
    </body>
    <script type="text/javascript">
     (function (){
        function Dt(selector) {
          return new Dt.fn.init(selector);
        }
     
        Dt.fn = Dt.prototype = {
          constructor: Dt,
          initialize: false,
          init: function (selector) {
            if(selector.indexOf('#') > -1){
              this[0] = document.getElementById(selector.substring(1));
            } else {
              var aryEle = document.querySelectorAll(selector);
              for(var i = 0; i <  aryEle.length; i++){
                this[i] = aryEle[i];
              }
            }
            return this;
          },
          render: function(opt) {
            /*
              match   hour
              0    1    2    3    4    5    6    7    8    9
              00   01   02   03   04   05   06   07   08   09
              10   11   12   13   14   15   16   17   18   19
              20   21   22   23
              \d
              [01]\d | 2[0-3]
              match   minute   second
              0    1    2    3    4    5    6    7    8    9
              00   01   02   03   04   05   06   07   08   09
              10   11   12   13   14   15   16   17   18   19
              20   ...                                     29
              ...
              50   ...                                     59
              \d
              [0-5]\d
            */
            var regExpDt = /^\d{4}([-/]?)\d{1,2}\1\d{1,2}(?:\s+(?:[01]?\d)|(?:2[0-3])\:[0-5]?\d\:[0-5]?\d)?$/;
            if(Object.prototype.toString.apply(opt.value) == '[object Date]') {
              this.value = opt.value.getFullYear() + '/' + (opt.value.getMonth() + 1) + '/' + opt.value.getDate();
              this.date = opt.value;
              this.initialize = true;
            } else if(Object.prototype.toString.apply(opt.value) == '[object String]') {
              this.value = regExpDt.test(opt.value) ? opt.value : '';
              this.date = new Date(opt.value);
              this.initialize = true;
            } else {
              this.value = '';
              this.date = new Date();
            }
            this.year = this.date.getFullYear();
            this.month = this.date.getMonth() + 1;
            this.day = this.date.getDate();
            this.hour = this.date.getHours();
            this.minute = this.date.getMinutes();
            this.second = this.date.getSeconds();
            this.week = this.date.getDay() == 0 ? 7 : this.date.getDay();
            this.getFirstdateInMonth = function() {
              return new Date(this.date.getFullYear(), this.date.getMonth(), 1);
            }
            this.getCalDate = function(dt, type, num) {
              var dtRtn = new Date();
              dtRtn = dt;
              switch (type) {
                case 'Y':
                  dtRtn = new Date(dt.getFullYear() + num, dt.getMonth(), dt.getDate());
                  break;
                case 'M':
                  dtRtn = new Date(dt.getFullYear(), dt.getMonth() + num, dt.getDate());
                  break;
                case 'D':
                  dtRtn = new Date(dt.getFullYear(), dt.getMonth(), dt.getDate() + num);
                  break;
                default:
                  break;
              }
              return dtRtn;
            }
            this.getLastdateInMonth = function() {
              var dtRtn = new Date();
              var dtFirstdateInNextmonth = new Date(this.date.getFullYear(), this.date.getMonth() + 1, 1);
              dtRtn = this.getCalDate(dtFirstdateInNextmonth, 'D', -1);
              return dtRtn;
            }
            this.count = this.getLastdateInMonth().getDate();
            this.formatDate = function(type) {
              var strRtn = '',
                  strYear = '',
                  strMonth = '',
                  strDay = '';
              strYear = this.date.getFullYear();
              strMonth = (this.date.getMonth() + 1).toString().length < 2 ? '0' + (this.date.getMonth() + 1) : (this.date.getMonth() + 1);
              strDay = this.date.getDate().toString().length < 2 ? '0' + this.date.getDate() : this.date.getDate();
              switch(type.toString().toUpperCase()) {
                case 'YYYYMMDD':
                  strRtn = strYear + strMonth + strDay;
                  break;
                case 'YYYY/MM/DD':
                  strRtn = strYear + '/' + strMonth + '/' + strDay;
                  break;
                case 'YYYY-MM-DD':
                  strRtn = strYear + '-' + strMonth + '-' + strDay;
                  break;
                default:
                  strRtn = strYear + '/' + strMonth + '/' + strDay;
                  break;
              }
              return strRtn;
            }
            return this;
          }
        };
        Dt.fn.init.prototype = Dt.fn;
     
        Dt.fn.extend = Dt.extend = function () {
          var len = arguments.length,
              i = 1,
              j,
              objRtn = arguments[0];
          for(;i < len;i++){
            for(var j in arguments[i]){
              objRtn[j] = arguments[i][j];
            }
          }
          return objRtn;
        }
     
        Dt.fn.create = Dt.create = function() {
          this.render(arguments[0]);
          createDateList.call(this);
        }
     
        function insertAfter(target, node) {
          //node.style.left = target.offsetLeft + "px";
          if(target.parentNode.children.length == 1) {
            target.parentNode.appendChild(node);
          } else {
            target.parentNode.insertBefore(node, target.nextSibling);
          }
        }
     
        function setStyle(target, opts) {
          for(var item in opts){
            target.style[item] = opts[item];
          }
        }
     
        function createHeader() {
          var me = this;
          var divHeader = document.createElement('div');
          setStyle(divHeader, {
            height: '30px',
            borderBottom: '1px solid silver',
            position: 'relative',
            backgroundColor: 'rgba(214,222,247,1)'
          });
          var btnLastMonth = document.createElement('div');
          btnLastMonth.title = "上月";
          btnLastMonth.onclick = function() {
            var speed_last_month = 1;
            var speed_current_month = 1;
            var b_last_month = false;
            var b_current_month = false;
            var next_month_left = parseInt(me.content.nextMonth.component.style.left);
            var timer = setInterval(function() {
              if(!b_last_month) {
                if(parseInt(me.Container.children[1].style.left) < 0) {
                  me.Container.children[1].style.left = parseInt(me.Container.children[1].style.left) + Math.floor(5 / speed_last_month) + 'px';
                  speed_last_month += 0.01;
                } else {
                  b_last_month = !b_last_month;
                }
              }
              if(!b_current_month) {
                if(parseInt(me.Container.children[2].style.left) < next_month_left) {
                  me.Container.children[2].style.left = parseInt(me.Container.children[2].style.left) + Math.floor(5 / speed_current_month) + 'px';
                  speed_current_month += 0.01;
                } else {
                  b_current_month = !b_current_month;
                }
              }
              if(b_last_month && b_current_month) {
                clearInterval(timer);
                me.date = me.getFirstdateInMonth();
                me.date = me.getCalDate(me.date, 'M', -1);
                me.render({value: me.date});
                var objContent = createContent.call(me);
                me.Container.removeChild(me.Container.children[3]);
                me.Container.insertBefore(objContent.lastMonth.component, me.Container.children[0].nextSibling);
                me.Container.replaceChild(objContent.nextMonth.component, me.Container.children[3]);
                me.Container.children[2].style.left = 0;
                me.Container.children[2].style.position = 'absolute';
                me.Container.children[3].style.left = '250px';
                me.Container.children[3].style.position = 'relative';
                me.content.nextMonth = objContent.nextMonth;
                me.content.nextMonth.left = 250;
                me.content.currentMonth = me.content.lastMonth;
                me.content.currentMonth.left = 0;
                me.content.lastMonth = objContent.lastMonth;
                me.content.lastMonth.left = -275;
                me.header.children[2].innerHTML = me.formatDate(me.getFirstdateInMonth());
                me[0].value = me.formatDate(me.getFirstdateInMonth());
              }
            }, 10);
          }
          setStyle(btnLastMonth, {
            cursor: 'pointer',
            height: '30px',
            border: 0,
            display: 'inline',
            width: '30px',
            position: 'absolute',
            left: 0
          });
          var canvas_last_month = document.createElement('canvas');
          if(canvas_last_month.getContext('2d')) {
            canvas_last_month.height = 30;
            canvas_last_month.width = 30;
            var ctx = canvas_last_month.getContext('2d');
            ctx.beginPath();
            ctx.fillStyle = 'rgba(214,222,247,1)';
            ctx.fillRect(0, 0, 30, 30);
            ctx.strokeStyle = 'rgba(251,251,251,1)';
            ctx.fillStyle = 'rgba(251,251,251,1)';
            ctx.lineWidth = 1;
            ctx.moveTo(7, 0);
            ctx.lineTo(15, 0);
            ctx.lineTo(8, 15);
            ctx.lineTo(15, 30);
            ctx.lineTo(7, 30);
            ctx.lineTo(0, 15);
            ctx.lineTo(7, 0);
     
            ctx.moveTo(22, 0);
            ctx.lineTo(30, 0);
            ctx.lineTo(23, 15);
            ctx.lineTo(30, 30);
            ctx.lineTo(22, 30);
            ctx.lineTo(15, 15);
            ctx.lineTo(22, 0);
            ctx.fill();
            ctx.stroke();
            btnLastMonth.appendChild(canvas_last_month);
          } else {
            btnLastMonth.innerHTML = "<<";
            setStyle(btnLastMonth, {
              backgroundColor: 'rgba(214,222,247,1)'
            });
          }
     
          var btnLastDay = document.createElement('div');
          btnLastDay.title = "昨日";
          btnLastDay.onclick = function() {
            if(me.getCalDate(me.date, 'D', -1).getMonth() + 1 == me.month) {
              me.date = me.getCalDate(me.date, 'D', -1);
              me.render({value: me.date});
              var objContent = createContent.call(me);
              me.Container.replaceChild(objContent.currentMonth.component, me.Container.children[2]);
              me.header.children[2].innerHTML = me.formatDate(me.date);
              me[0].value = me.formatDate(me.date);
            } else {
              var speed_last_month = 1;
              var speed_current_month = 1;
              var b_last_month = false;
              var b_current_month = false;
              var next_month_left = parseInt(me.content.nextMonth.component.style.left);
     
              me.date = me.getCalDate(me.date, 'D', -1);
              me.render({value: me.date});
              var objContent = createContent.call(me);
              me.Container.replaceChild(objContent.currentMonth.component, me.Container.children[1]);
              me.Container.children[1].style.left = '-275px';
              var timer = setInterval(function() {
                if(!b_current_month) {
                  if(parseInt(me.Container.children[2].style.left) < next_month_left) {
                    me.Container.children[2].style.left = parseInt(me.Container.children[2].style.left) + Math.floor(5 / speed_current_month) + 'px';
                    speed_current_month += 0.01;
                  } else {
                    b_current_month = !b_current_month;
                  }
                }
                if(!b_last_month) {
                  if(parseInt(me.Container.children[1].style.left) < 0) {
                    me.Container.children[1].style.left = parseInt(me.Container.children[1].style.left) + Math.floor(5 / speed_last_month) + 'px';
                    speed_last_month += 0.01;
                  } else {
                    b_last_month = !b_last_month;
                  }
                }
                if(b_last_month && b_current_month) {
                  clearInterval(timer);
                  me.Container.removeChild(me.Container.children[3]);
                  me.Container.insertBefore(objContent.lastMonth.component, me.Container.children[0].nextSibling);
                  me.Container.replaceChild(objContent.nextMonth.component, me.Container.children[3]);
                  me.Container.children[2].style.left = 0;
                  me.Container.children[2].style.position = 'absolute';
                  me.Container.children[3].style.left = '250px';
                  me.Container.children[3].style.position = 'relative';
                  me.content.nextMonth = objContent.nextMonth;
                  me.content.nextMonth.left = 250;
                  me.content.currentMonth = me.content.lastMonth;
                  me.content.currentMonth.left = 0;
                  me.content.lastMonth = objContent.lastMonth;
                  me.content.lastMonth.left = -275;
                  me.header.children[2].innerHTML = me.formatDate(me.getFirstdateInMonth());
                  me[0].value = me.formatDate(me.getFirstdateInMonth());
                }
              }, 10);
            }
          }
          setStyle(btnLastDay, {
            cursor: 'pointer',
            height: '30px',
            width: '30px',
            display: 'inline',
            position: 'absolute',
            left: '31px'
          });
          var canvas_last_day = document.createElement('canvas');
          if(canvas_last_day.getContext('2d')) {
            canvas_last_day.height = 30;
            canvas_last_day.width = 30;
            var ctx = canvas_last_day.getContext('2d');
            ctx.beginPath();
            ctx.fillStyle = 'rgba(214,222,247,1)';
            ctx.fillRect(0, 0, 30, 30);
            ctx.strokeStyle = 'rgba(251,251,251,1)';
            ctx.fillStyle = 'rgba(251,251,251,1)';
            ctx.lineWidth = 1;
            ctx.moveTo(11, 0);
            ctx.lineTo(19, 0);
            ctx.lineTo(12, 15);
            ctx.lineTo(19, 30);
            ctx.lineTo(11, 30);
            ctx.lineTo(4, 15);
            ctx.lineTo(11, 0);
            ctx.fill();
            ctx.stroke();
            btnLastDay.appendChild(canvas_last_day);
          } else {
            btnLastDay.innerHTML = "<";
            setStyle(btnLastDay, {
              backgroundColor: 'rgba(214,222,247,1)'
            });
          }
     
          var spanDt = document.createElement('div');
          spanDt.innerHTML = this.formatDate(this.date);
          setStyle(spanDt, {
            position: 'absolute',
            margin: '0 auto',
            top: '5px',
            right: 0,
            bottom: 0,
            left: 0,
            width: '100px'
          });
     
          var btnTomorrow = document.createElement('div');
          btnTomorrow.title = "明日";
          btnTomorrow.onclick = function() {
            if(me.getCalDate(me.date, 'D', 1).getMonth() + 1 == me.month) {
              me.date = me.getCalDate(me.date, 'D', 1);
              me.render({value: me.date});
              var objContent = createContent.call(me);
              me.Container.replaceChild(objContent.currentMonth.component, me.Container.children[2]);
              me.Container.children[2].style.left = 0;
              me.header.children[2].innerHTML = me.formatDate(me.date);
              me[0].value = me.formatDate(me.date);
            } else {
              var speed_next_month = 1;
              var speed_current_month = 1;
              var b_next_month = false;
              var b_current_month = false;
              var last_month_left = parseInt(me.content.lastMonth.component.style.left);
     
              me.date = me.getCalDate(me.date, 'D', 1);
              me.render({value: me.date});
              var objContent = createContent.call(me);
              me.Container.replaceChild(objContent.currentMonth.component, me.Container.children[3]);
              me.Container.children[3].style.left = '250px';
              var timer = setInterval(function() {
                if(!b_current_month) {
                  if(parseInt(me.Container.children[2].style.left) > last_month_left) {
                    me.Container.children[2].style.left = parseInt(me.Container.children[2].style.left) - Math.floor(5 / speed_current_month) + 'px';
                    speed_current_month += 0.01;
                  } else {
                    b_current_month = !b_current_month;
                  }
                }
                if(!b_next_month) {
                  if(parseInt(me.Container.children[3].style.left) > 0) {
                    me.Container.children[3].style.left = parseInt(me.Container.children[3].style.left) - Math.floor(5 / speed_next_month) + 'px';
                    speed_next_month += 0.01;
                  } else {
                    b_next_month = !b_next_month;
                  }
                }
                if(b_next_month && b_current_month) {
                  clearInterval(timer);
                  me.Container.removeChild(me.Container.children[1]);
                  me.Container.insertBefore(objContent.nextMonth.component, me.Container.children[2].nextSibling);
                  me.Container.replaceChild(objContent.lastMonth.component, me.Container.children[1]);
                  me.Container.children[2].style.left = 0;
                  me.Container.children[2].style.position = 'absolute';
                  me.Container.children[3].style.left = '250px';
                  me.Container.children[3].style.position = 'relative';
                  me.content.nextMonth = objContent.nextMonth;
                  me.content.nextMonth.left = 250;
                  me.content.currentMonth = me.content.nextMonth;
                  me.content.currentMonth.left = 0;
                  me.content.lastMonth = objContent.lastMonth;
                  me.content.lastMonth.left = -275;
                  me.header.children[2].innerHTML = me.formatDate(me.getFirstdateInMonth());
                  me[0].value = me.formatDate(me.getFirstdateInMonth());
                }
              }, 10);
            }
          }
          setStyle(btnTomorrow, {
            cursor: 'pointer',
            height: '30px',
            width: '30px',
            display: 'inline',
            position: 'absolute',
            right: '31px'
          });
     
          var canvas_tomorrow = document.createElement('canvas');
          if(canvas_tomorrow.getContext('2d')) {
            canvas_tomorrow.height = 30;
            canvas_tomorrow.width = 30;
            var ctx = canvas_tomorrow.getContext('2d');
            ctx.beginPath();
            ctx.fillStyle = 'rgba(214,222,247,1)';
            ctx.fillRect(0, 0, 30, 30);
            ctx.strokeStyle = 'rgba(251,251,251,1)';
            ctx.fillStyle = 'rgba(251,251,251,1)';
            ctx.lineWidth = 1;
            ctx.moveTo(11, 0);
            ctx.lineTo(19, 0);
            ctx.lineTo(26, 15);
            ctx.lineTo(19, 30);
            ctx.lineTo(11, 30);
            ctx.lineTo(18, 15);
            ctx.lineTo(11, 0);
            ctx.fill();
            ctx.stroke();
            btnTomorrow.appendChild(canvas_tomorrow);
          } else {
            btnTomorrow.innerHTML = ">";
            setStyle(btnTomorrow, {
              backgroundColor: 'rgba(214,222,247,1)'
            });
          }
     
          var btnNextMonth = document.createElement('div');
          btnNextMonth.title = "下月";
          btnNextMonth.onclick = function() {
            var speed_next_month = 1;
            var speed_current_month = 1;
            var b_next_month = false;
            var b_current_month = false;
            var last_month_left = parseInt(me.content.lastMonth.component.style.left);
            var timer = setInterval(function() {
              if(!b_next_month) {
                if(parseInt(me.Container.children[3].style.left) > 0) {
                  me.Container.children[3].style.left = parseInt(me.Container.children[3].style.left) - Math.floor(5 / speed_next_month) + 'px';
                  speed_next_month += 0.01;
                } else {
                  b_next_month = !b_next_month;
                }
              }
              if(!b_current_month) {
                if(parseInt(me.Container.children[2].style.left) > last_month_left) {
                  me.Container.children[2].style.left = parseInt(me.Container.children[2].style.left) - Math.floor(5 / speed_current_month) + 'px';
                  speed_current_month += 0.01;
                } else {
                  b_current_month = !b_current_month;
                }
              }
              if(b_next_month && b_current_month) {
                clearInterval(timer);
                me.date = me.getFirstdateInMonth();
                me.date = me.getCalDate(me.date, 'M', 1);
                me.render({value: me.date});
                var objContent = createContent.call(me);
                me.Container.removeChild(me.Container.children[1]);
                me.Container.insertBefore(objContent.nextMonth.component, me.Container.children[2].nextSibling);
                me.Container.replaceChild(objContent.lastMonth.component, me.Container.children[1]);
                me.Container.children[1].style.left = '-275px';
                me.Container.children[1].style.position = 'absolute';
                me.Container.children[2].style.left = '0';
                me.Container.children[2].style.position = 'absolute';
                me.content.lastMonth = objContent.lastMonth;
                me.content.lastMonth.left = -275;
                me.content.currentMonth = me.content.nextMonth;
                me.content.currentMonth.left = 0;
                me.content.nextMonth = objContent.nextMonth;
                me.content.nextMonth.left = 250;
                me.header.children[2].innerHTML = me.formatDate(me.getFirstdateInMonth());
                me[0].value = me.formatDate(me.getFirstdateInMonth());
              }
            }, 10);
          }
          setStyle(btnNextMonth, {
            cursor: 'pointer',
            height: '30px',
            border: 0,
            display: 'inline',
            width: '30px',
            position: 'absolute',
            right: 0
          });
          var canvas_next_month = document.createElement('canvas');
          if(canvas_next_month.getContext('2d')) {
            canvas_next_month.height = 30;
            canvas_next_month.width = 30;
            var ctx = canvas_next_month.getContext('2d');
            ctx.beginPath();
            ctx.fillStyle = 'rgba(214,222,247,1)';
            ctx.fillRect(0, 0, 30, 30);
            ctx.strokeStyle = 'rgba(251,251,251,1)';
            ctx.fillStyle = 'rgba(251,251,251,1)';
            ctx.lineWidth = 1;
            ctx.moveTo(0, 0);
            ctx.lineTo(8, 0);
            ctx.lineTo(15, 15);
            ctx.lineTo(8, 30);
            ctx.lineTo(0, 30);
            ctx.lineTo(7, 15);
            ctx.lineTo(0, 0);
     
            ctx.moveTo(15, 0);
            ctx.lineTo(23, 0);
            ctx.lineTo(30, 15);
            ctx.lineTo(23, 30);
            ctx.lineTo(15, 30);
            ctx.lineTo(22, 15);
            ctx.lineTo(15, 0);
            ctx.fill();
            ctx.stroke();
            btnNextMonth.appendChild(canvas_next_month);
          } else {
            btnNextMonth.innerHTML = ">>";
            setStyle(btnNextMonth, {
              backgroundColor: 'rgba(214,222,247,1)'
            });
          }
          divHeader.appendChild(btnLastMonth);
          divHeader.appendChild(btnLastDay);
          divHeader.appendChild(spanDt);
          divHeader.appendChild(btnTomorrow);
          divHeader.appendChild(btnNextMonth);
          return divHeader;
        }
     
        function createContent() {
          var realDate = this.date;
          var objContent = {
            lastMonth: {
              scope: function() {
                this.date = this.getFirstdateInMonth();
                this.date = this.getCalDate(this.date, 'M', -1);
                this.render({value: this.date});
              },
              current: true,
              left: -275,
              component: null
            },
            currentMonth: {
              scope: function() {
                if(this.initialize) {
                  this.date = realDate;
                } else {
                  this.date = new Date();
                }
                this.render({value: this.date});
              },
              current: true,
              left: 0,
              component: null
            },
            nextMonth: {
              scope: function() {
                this.date = this.getFirstdateInMonth();
                this.date = this.getCalDate(this.date, 'M', 1);
                this.render({value: this.date});
              },
              current: false,
              left: 250,
              component: null
            }
          };
          for(var item in objContent) {
            objContent[item].scope.call(this);
            objContent[item].year = this.year;
            objContent[item].month = this.month;
            var divContent = document.createElement('div');
            setStyle(divContent, {
              height: '250px',
              position: objContent[item].current ? 'absolute' : 'relative',
              left: objContent[item].left + 'px'
            });
            var tbl = document.createElement('table'),
                row_obj,
                cell_obj,
                row_num = tbl.rows.length,
                cell_num = 0;
            setStyle(tbl, {
              width: '100%'
            });
            row_obj = tbl.insertRow(row_num);
            setStyle(row_obj, {
              backgroundColor: 'rgba(214,222,247,1)'
            });
            row_obj.setAttribute('head', true);
            cell_obj = row_obj.insertCell(cell_num++);
            cell_obj.innerHTML = "一";
            cell_obj.style.width = "35px";
            cell_obj = row_obj.insertCell(cell_num++);
            cell_obj.innerHTML = "二";
            cell_obj.style.width = "35px";
            cell_obj = row_obj.insertCell(cell_num++);
            cell_obj.innerHTML = "三";
            cell_obj.style.width = "35px";
            cell_obj = row_obj.insertCell(cell_num++);
            cell_obj.innerHTML = "四";
            cell_obj.style.width = "35px";
            cell_obj = row_obj.insertCell(cell_num++);
            cell_obj.innerHTML = "五";
            cell_obj.style.width = "35px";
            cell_obj = row_obj.insertCell(cell_num++);
            cell_obj.innerHTML = "六";
            cell_obj.style.width = "35px";
            cell_obj = row_obj.insertCell(cell_num++);
            cell_obj.innerHTML = "日";
            cell_obj.style.width = "35px";
            var dtFirst = this.getFirstdateInMonth();
            var aryDate = [];
            var aryWeekDate = new Array(7);
            for (var i = 0; i < this.count; i++) {
              if (i == 0) {
                aryWeekDate = new Array(7);
                aryWeekDate[(dtFirst.getDay() == 0 ? 7 : dtFirst.getDay()) - 1] = dtFirst;
                var weekNumberForFirstDay = dtFirst.getDay() == 0 ? 7 : dtFirst.getDay();
                var d = 0;
                while(weekNumberForFirstDay > 1) {
                  aryWeekDate[weekNumberForFirstDay - 2] = this.getCalDate(dtFirst, 'D', -1 - d);
                  weekNumberForFirstDay--;
                  d++;
                }
                if (dtFirst.getDay() == 0) {
                  aryDate.push(aryWeekDate);
                }
              } else {
                if (i == this.count - 1 && this.getCalDate(dtFirst, 'D', i).getDay() != 0) {
                  var weekNumberForNextDay = this.getCalDate(dtFirst, 'D', i).getDay();
                  var n = 0;
                  if(weekNumberForNextDay == 1){
                    aryWeekDate = new Array(7);
                  }
                  while(weekNumberForNextDay < 8){
                    aryWeekDate[weekNumberForNextDay - 1] = this.getCalDate(dtFirst, 'D', i + n);
                    weekNumberForNextDay++;
                    n++;
                  }
                  aryDate.push(aryWeekDate);
                }
                if (this.getCalDate(dtFirst, 'D', i).getDay() == 1) {
                  aryWeekDate = new Array(7);
                  aryWeekDate[0] = this.getCalDate(dtFirst, 'D', i);
                } else if (this.getCalDate(dtFirst, 'D', i).getDay() == 0) {
                  aryWeekDate[6] = this.getCalDate(dtFirst, 'D', i);
                  aryDate.push(aryWeekDate);
                } else {
                  aryWeekDate[this.getCalDate(dtFirst, 'D', i).getDay() - 1] = this.getCalDate(dtFirst, 'D', i);
                }
              }
            }
            for (var j = 0; j < aryDate.length; j++) {
              row_obj = tbl.insertRow(tbl.rows.length);
              row_obj.style.height = '34px';
              cell_num = 0;
              for (var k = 0; k < aryDate[j].length; k++) {
                cell_obj = row_obj.insertCell(cell_num++);
                cell_obj.innerHTML = aryDate[j][k] != undefined ? aryDate[j][k].getDate() : '';
                cell_obj.style.width = "30px";
                cell_obj.style.cursor = "default";
                cell_obj.style.borderRadius = '17px';
                //  set style for today
                if(aryDate[j][k] != undefined
                  && this.month == new Date().getMonth() + 1
                  && this.year == new Date().getFullYear()
                  && aryDate[j][k].getDate() == new Date().getDate()) {
                  cell_obj.style.border = '1px solid silver';
                }
                //  set style for days of other month
                if(aryDate[j][k] != undefined && this.month != aryDate[j][k].getMonth() + 1) {
                  cell_obj.style.color = 'silver';
                  cell_obj.setAttribute('no-current-month', true);
                  if(aryDate[j][k].getFullYear() < this.year) {
                    cell_obj.setAttribute('last-month', true);
                  } else  if(aryDate[j][k].getFullYear() == this.year) {
                    if(aryDate[j][k].getMonth() + 1 < this.month) {
                      cell_obj.setAttribute('last-month', true);
                    } else {
                      cell_obj.setAttribute('next-month', true);
                    }
                  } else {
                    cell_obj.setAttribute('next-month', true);
                  }
                }
                if(aryDate[j][k] != undefined && this.year == aryDate[j][k].getFullYear()
                  && this.month == aryDate[j][k].getMonth() + 1
                  && this.day == aryDate[j][k].getDate()) {
                  cell_obj.style.color = 'white';
                  cell_obj.style.backgroundColor = 'rgba(245,169,244,1)';
                  cell_obj.setAttribute('current-date', true);
                }
                cell_obj.onmouseover = function () {
                  this.style.backgroundColor = 'rgba(245,169,244,1)';
                  this.style.color = 'white';
                }
                cell_obj.onmouseout = function () {
                  if(!this.getAttribute('current-date')) {
                    this.style.backgroundColor = "white";
                    this.style.color = 'black';
                  } else {
                    this.style.color = 'white';
                  }
                  if(this.getAttribute('no-current-month')) {
                    this.style.color = 'silver';
                  }
                }
              }
            }
            var me = this;
            tbl.onclick = function (e) {
              var e = (e || event.srcElement).target;
              if(e.tagName.toString().toLowerCase() == 'td' && !e.parentNode.getAttribute('head')) {
                if(!e.getAttribute('no-current-month')) {
                  me.date = new Date(me.date.getFullYear(), me.date.getMonth(), parseInt(e.innerHTML));
                  me.render({value: me.date});
                  var objContent = createContent.call(me);
                  me.Container.replaceChild(objContent.currentMonth.component, me.Container.children[2]);
                  me.header.children[2].innerHTML = me.formatDate(me.date);
                  me[0].value = me.formatDate(me.date);
                } else {
                  if(e.getAttribute('last-month')) {
                    var speed_last_month = 1;
                    var speed_current_month = 1;
                    var b_last_month = false;
                    var b_current_month = false;
                    var next_month_left = parseInt(me.content.nextMonth.component.style.left);
                    if(me.date.getMonth() == 0) {
                      me.date = new Date(me.date.getFullYear() - 1, 11, parseInt(e.innerHTML));
                    } else {
                      me.date = new Date(me.date.getFullYear(), me.date.getMonth() - 1, parseInt(e.innerHTML));
                    }
                    me.render({value: me.date});
                    var objContent = createContent.call(me);
                    me.Container.replaceChild(objContent.currentMonth.component, me.Container.children[1]);
                    me.Container.children[1].style.left = '-275px';
                    var timer = setInterval(function() {
                      if(!b_current_month) {
                        if(parseInt(me.Container.children[2].style.left) < next_month_left) {
                          me.Container.children[2].style.left = parseInt(me.Container.children[2].style.left) + Math.floor(5 / speed_current_month) + 'px';
                          speed_current_month += 0.01;
                        } else {
                          b_current_month = !b_current_month;
                        }
                      }
                      if(!b_last_month) {
                        if(parseInt(me.Container.children[1].style.left) < 0) {
                          me.Container.children[1].style.left = parseInt(me.Container.children[1].style.left) + Math.floor(5 / speed_last_month) + 'px';
                          speed_last_month += 0.01;
                        } else {
                          b_last_month = !b_last_month;
                        }
                      }
                      if(b_last_month && b_current_month) {
                        clearInterval(timer);
                        me.Container.removeChild(me.Container.children[3]);
                        me.Container.insertBefore(objContent.lastMonth.component, me.Container.children[0].nextSibling);
                        me.Container.replaceChild(objContent.nextMonth.component, me.Container.children[3]);
                        me.Container.children[2].style.left = 0;
                        me.Container.children[2].style.position = 'absolute';
                        me.Container.children[3].style.left = '250px';
                        me.Container.children[3].style.position = 'relative';
                        me.content.nextMonth = objContent.nextMonth;
                        me.content.nextMonth.left = 250;
                        me.content.currentMonth = me.content.lastMonth;
                        me.content.currentMonth.left = 0;
                        me.content.lastMonth = objContent.lastMonth;
                        me.content.lastMonth.left = -275;
                        me.header.children[2].innerHTML = me.formatDate(me.getFirstdateInMonth());
                        me[0].value = me.formatDate(me.getFirstdateInMonth());
                      }
                    }, 10);
                  } else {
                    var speed_next_month = 1;
                    var speed_current_month = 1;
                    var b_next_month = false;
                    var b_current_month = false;
                    var last_month_left = parseInt(me.content.lastMonth.component.style.left);
                    if(me.date.getMonth() == 11) {
                      me.date = new Date(me.date.getFullYear() + 1, 0, parseInt(e.innerHTML));
                    } else {
                      me.date = new Date(me.date.getFullYear(), me.date.getMonth() + 1, parseInt(e.innerHTML));
                    }
                    me.render({value: me.date});
                    var objContent = createContent.call(me);
                    me.Container.replaceChild(objContent.currentMonth.component, me.Container.children[3]);
                    me.Container.children[3].style.left = '250px';
                    var timer = setInterval(function() {
                      if(!b_current_month) {
                        if(parseInt(me.Container.children[2].style.left) > last_month_left) {
                          me.Container.children[2].style.left = parseInt(me.Container.children[2].style.left) - Math.floor(5 / speed_current_month) + 'px';
                          speed_current_month += 0.01;
                        } else {
                          b_current_month = !b_current_month;
                        }
                      }
                      if(!b_next_month) {
                        if(parseInt(me.Container.children[3].style.left) > 0) {
                          me.Container.children[3].style.left = parseInt(me.Container.children[3].style.left) - Math.floor(5 / speed_next_month) + 'px';
                          speed_next_month += 0.01;
                        } else {
                          b_next_month = !b_next_month;
                        }
                      }
                      if(b_next_month && b_current_month) {
                        clearInterval(timer);
                        me.Container.removeChild(me.Container.children[1]);
                        me.Container.insertBefore(objContent.nextMonth.component, me.Container.children[2].nextSibling);
                        me.Container.replaceChild(objContent.lastMonth.component, me.Container.children[1]);
                        me.Container.children[2].style.left = 0;
                        me.Container.children[2].style.position = 'absolute';
                        me.Container.children[3].style.left = '250px';
                        me.Container.children[3].style.position = 'relative';
                        me.content.nextMonth = objContent.nextMonth;
                        me.content.nextMonth.left = 250;
                        me.content.currentMonth = me.content.nextMonth;
                        me.content.currentMonth.left = 0;
                        me.content.lastMonth = objContent.lastMonth;
                        me.content.lastMonth.left = -275;
                        me.header.children[2].innerHTML = me.formatDate(me.getFirstdateInMonth());
                        me[0].value = me.formatDate(me.getFirstdateInMonth());
                      }
                    }, 10);
                  }
                }
              }
            }
            divContent.appendChild(tbl);
            objContent[item].component = divContent;
          }
          //  reset date to current month
          this.date = realDate;
          this.render({value: this.date});
          return objContent;
        }
     
        function createFooter() {
          var me = this;
          var divFooter = document.createElement('div');
          setStyle(divFooter, {
            height: '30px',
            width: '100%',
            position: 'absolute',
            bottom: 0
          });
          var divContainer = document.createElement('div');
          setStyle(divContainer, {
            position: 'relative',
            width: '95%',
            height: '30px'
          });
          var btnClose= document.createElement('div');
          setStyle(btnClose, {
            position: 'absolute',
            width: '100%',
            top: 0,
            right: 0,
            bottom: '5px',
            left: 0,
            cursor: 'pointer',
            border: '1px solid silver',
            borderRadius: '4px',
            backgroundColor: 'rgba(214,222,247,1)',
            color: 'white',
            margin: '0 5px'
          });
          btnClose.innerHTML = '关闭';
          btnClose.onclick = function() {
            setStyle(me.Container, {
              display: 'none'
            });
          }
          divContainer.appendChild(btnClose);
          divFooter.appendChild(divContainer);
          return divFooter;
        }
     
        function createDateList() {
          this.Container = document.createElement('div');
          setStyle(this.Container, {
            position: 'relative',
            marginTop: '5px',
            borderRadius: '3px',
            width: '250px',
            height: '320px',
            border: '1px solid silver',
            //float: 'left',
            textAlign: 'center',
            display: 'none',
            overflow: 'hidden'
          });
     
          this.header = createHeader.call(this);
          this.content = createContent.call(this);
          this.footer = createFooter.call(this);
          this.Container.appendChild(this.header);
          for(var item in this.content) {
            this.Container.appendChild(this.content[item].component);
          }
          this.initialize = true;
          this.Container.appendChild(this.footer);
          insertAfter(this[0], this.Container);
        }
     
        Dt.fn.choose = function (options) {
          options = options || {};
          var defaults = {
            value: new Date()
          };
          var opt = this.extend({}, defaults, options);
          this.create(opt);
          this[0].onfocus = function() {
            this.parentNode.children[1].style.display = '';
          }
        }
     
        var $ = function (selector) {
          return Dt(selector);
        }
     
        window.$ = $;
      })()
     
      window.onload = function () {
        $('#txtDt').choose();
      }
    </script>
    </html>

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N0eWxlMjAxOTA0_size_16_color_FFFFFF_t_70]

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