js日期的惯用操作

js日期的常用操作
    //---------------------------------------------------      // 判断闰年      //---------------------------------------------------      Date.prototype.isLeapYear = function()       {           return (0==this.getYear()%4&&((this.getYear()%100!=0)||(this.getYear()%400==0)));       }             //---------------------------------------------------      // 日期格式化      // 格式 YYYY/yyyy/YY/yy 表示年份      // MM/M 月份      // W/w 星期      // dd/DD/d/D 日期      // hh/HH/h/H 时间      // mm/m 分钟      // ss/SS/s/S 秒      //---------------------------------------------------      Date.prototype.Format = function(formatStr)       {           var str = formatStr;           var Week = ['日','一','二','三','四','五','六'];                str=str.replace(/yyyy|YYYY/,this.getFullYear());           str=str.replace(/yy|YY/,(this.getYear() % 100)&gt;9?(this.getYear() % 100).toString():'0' + (this.getYear() % 100));                 str=str.replace(/MM/,this.getMonth()&gt;9?(this.getMonth()+1).toString():'0' + (this.getMonth()+1));           str=str.replace(/M/g,this.getMonth()+1);                 str=str.replace(/w|W/g,Week[this.getDay()]);                 str=str.replace(/dd|DD/,this.getDate()&gt;9?this.getDate().toString():'0' + this.getDate());           str=str.replace(/d|D/g,this.getDate());                 str=str.replace(/hh|HH/,this.getHours()&gt;9?this.getHours().toString():'0' + this.getHours());           str=str.replace(/h|H/g,this.getHours());           str=str.replace(/mm/,this.getMinutes()&gt;9?this.getMinutes().toString():'0' + this.getMinutes());           str=str.replace(/m/g,this.getMinutes());                 str=str.replace(/ss|SS/,this.getSeconds()&gt;9?this.getSeconds().toString():'0' + this.getSeconds());           str=str.replace(/s|S/g,this.getSeconds());                 return str;       }             //+---------------------------------------------------      //| 求两个时间的天数差 日期格式为 YYYY-MM-dd       //+---------------------------------------------------      function daysBetween(DateOne,DateTwo)      {           var OneMonth = DateOne.substring(5,DateOne.lastIndexOf ('-'));          var OneDay = DateOne.substring(DateOne.length,DateOne.lastIndexOf ('-')+1);          var OneYear = DateOne.substring(0,DateOne.indexOf ('-'));                var TwoMonth = DateTwo.substring(5,DateTwo.lastIndexOf ('-'));          var TwoDay = DateTwo.substring(DateTwo.length,DateTwo.lastIndexOf ('-')+1);          var TwoYear = DateTwo.substring(0,DateTwo.indexOf ('-'));                var cha=((Date.parse(OneMonth+'/'+OneDay+'/'+OneYear)- Date.parse(TwoMonth+'/'+TwoDay+'/'+TwoYear))/86400000);           return Math.abs(cha);      }                  //+---------------------------------------------------      //| 日期计算      //+---------------------------------------------------      Date.prototype.DateAdd = function(strInterval, Number) {           var dtTmp = this;          switch (strInterval) {               case 's' :return new Date(Date.parse(dtTmp.Format('MM/dd/yyyy HH:mm:ss')) + (1000 * Number));              case 'n' :return new Date(Date.parse(dtTmp.Format('MM/dd/yyyy HH:mm:ss')) + (60000 * Number));              case 'h' :return new Date(Date.parse(dtTmp.Format('MM/dd/yyyy HH:mm:ss')) + (3600000 * Number));              case 'd' :return new Date(Date.parse(dtTmp.Format('MM/dd/yyyy HH:mm:ss')) + (86400000 * Number));              case 'w' :return new Date(Date.parse(dtTmp.Format('MM/dd/yyyy HH:mm:ss')) + ((86400000 * 7) * Number));              case 'q' :return new Date(dtTmp.getFullYear(), (dtTmp.getMonth()) + Number*3, dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds());              case 'm' :return new Date(dtTmp.getFullYear(), (dtTmp.getMonth()) + Number, dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds());              case 'y' :return new Date((dtTmp.getFullYear() + Number), dtTmp.getMonth(), dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds());          }      }            //+---------------------------------------------------      //| 比较日期差 dtEnd 格式为日期型或者 有效日期格式字符串      //+---------------------------------------------------      Date.prototype.DateDiff = function(strInterval, dtEnd) {           var dtStart = this;          if (typeof dtEnd == 'string' )//如果是字符串转换为日期型          {               dtEnd = StringToDate(dtEnd);          }          switch (strInterval) {               case 's' :return parseInt((dtEnd - dtStart) / 1000);              case 'n' :return parseInt((dtEnd - dtStart) / 60000);              case 'h' :return parseInt((dtEnd - dtStart) / 3600000);              case 'd' :return parseInt((dtEnd - dtStart) / 86400000);              case 'w' :return parseInt((dtEnd - dtStart) / (86400000 * 7));              case 'm' :return (dtEnd.getMonth()+1)+((dtEnd.getFullYear()-dtStart.getFullYear())*12) - (dtStart.getMonth()+1);              case 'y' :return dtEnd.getFullYear() - dtStart.getFullYear();          }      }            //+---------------------------------------------------      //| 日期输出字符串，重载了系统的toString方法      //+---------------------------------------------------      Date.prototype.toString = function(showWeek)      {           var myDate= this;          var str = myDate.toLocaleDateString();          if (showWeek)          {               var Week = ['日','一','二','三','四','五','六'];              str += ' 星期' + Week[myDate.getDay()];          }          return str;      }            //+---------------------------------------------------      //| 日期合法性验证      //| 格式为：YYYY-MM-DD或YYYY/MM/DD      //+---------------------------------------------------      function IsValidDate(DateStr)       {           var sDate=DateStr.replace(/(^\s+|\s+$)/g,''); //去两边空格;           if(sDate=='') return true;           //如果格式满足YYYY-(/)MM-(/)DD或YYYY-(/)M-(/)DD或YYYY-(/)M-(/)D或YYYY-(/)MM-(/)D就替换为''           //数据库中，合法日期可以是:YYYY-MM/DD(2003-3/21),数据库会自动转换为YYYY-MM-DD格式           var s = sDate.replace(/[\d]{ 4,4 }[\-/]{ 1 }[\d]{ 1,2 }[\-/]{ 1 }[\d]{ 1,2 }/g,'');           if (s=='') //说明格式满足YYYY-MM-DD或YYYY-M-DD或YYYY-M-D或YYYY-MM-D           {               var t=new Date(sDate.replace(/\-/g,'/'));               var ar = sDate.split(/[-/:]/);               if(ar[0] != t.getYear() || ar[1] != t.getMonth()+1 || ar[2] != t.getDate())               {                   //alert('错误的日期格式！格式为：YYYY-MM-DD或YYYY/MM/DD。注意闰年。');                   return false;               }           }           else           {               //alert('错误的日期格式！格式为：YYYY-MM-DD或YYYY/MM/DD。注意闰年。');               return false;           }           return true;       }             //+---------------------------------------------------      //| 日期时间检查      //| 格式为：YYYY-MM-DD HH:MM:SS      //+---------------------------------------------------      function CheckDateTime(str)      {           var reg = /^(\d+)-(\d{ 1,2 })-(\d{ 1,2 }) (\d{ 1,2 }):(\d{ 1,2 }):(\d{ 1,2 })$/;           var r = str.match(reg);           if(r==null)return false;           r[2]=r[2]-1;           var d= new Date(r[1],r[2],r[3],r[4],r[5],r[6]);           if(d.getFullYear()!=r[1])return false;           if(d.getMonth()!=r[2])return false;           if(d.getDate()!=r[3])return false;           if(d.getHours()!=r[4])return false;           if(d.getMinutes()!=r[5])return false;           if(d.getSeconds()!=r[6])return false;           return true;       }             //+---------------------------------------------------      //| 把日期分割成数组      //+---------------------------------------------------      Date.prototype.toArray = function()      {           var myDate = this;          var myArray = Array();          myArray[0] = myDate.getFullYear();          myArray[1] = myDate.getMonth();          myArray[2] = myDate.getDate();          myArray[3] = myDate.getHours();          myArray[4] = myDate.getMinutes();          myArray[5] = myDate.getSeconds();          return myArray;      }            //+---------------------------------------------------      //| 取得日期数据信息      //| 参数 interval 表示数据类型      //| y 年 m月 d日 w星期 ww周 h时 n分 s秒      //+---------------------------------------------------      Date.prototype.DatePart = function(interval)      {           var myDate = this;          var partStr='';          var Week = ['日','一','二','三','四','五','六'];          switch (interval)          {               case 'y' :partStr = myDate.getFullYear();break;              case 'm' :partStr = myDate.getMonth()+1;break;              case 'd' :partStr = myDate.getDate();break;              case 'w' :partStr = Week[myDate.getDay()];break;              case 'ww' :partStr = myDate.WeekNumOfYear();break;              case 'h' :partStr = myDate.getHours();break;              case 'n' :partStr = myDate.getMinutes();break;              case 's' :partStr = myDate.getSeconds();break;          }          return partStr;      }            //+---------------------------------------------------      //| 取得当前日期所在月的最大天数      //+---------------------------------------------------      Date.prototype.MaxDayOfDate = function()      {           var myDate = this;          var ary = myDate.toArray();          var date1 = (new Date(ary[0],ary[1],1));          var date2 = date1.DateAdd('m',1);          var result = date1.DateDiff('d',date2);          return result;      }      //+---------------------------------------------------      //| 取得当前日期所在月的第一天      //+---------------------------------------------------     Date.prototype.MounthFirstDay = function()      {           var myDate = this;          var ary = myDate.toArray();          return  (new Date(ary[0],ary[1],1));    }      //+---------------------------------------------------      //| 取得当前日期所在月的最后一天      //+---------------------------------------------------     Date.prototype.MounthLastDay = function()      {           var myDate = this;          var ary = myDate.toArray();          return  (new Date(ary[0],ary[1],myDate.MaxDayOfDate()));    }     //+---------------------------------------------------      //| 取得当前日期所在周的第一天      //+---------------------------------------------------    Date.prototype.WeekFirstDay = function()      {           var myDate = this;          var ary = myDate.getDay();        if(ary==0){        return myDate.DateAdd('d',-6);        } else {        return myDate.DateAdd('d',-ary+1);        }            }         //+---------------------------------------------------      //| 取得当前日期所在周的最后一天      //+---------------------------------------------------    Date.prototype.WeekLastDay = function()      {           var myDate = this;          var ary = myDate.getDay();        if(ary==0){        return myDate;        } else {        return myDate.DateAdd('d',7-ary);        }          }          //+---------------------------------------------------      //| 取得当前日期所在周是一年中的第几周      //+---------------------------------------------------      Date.prototype.WeekNumOfYear = function()      {           var myDate = this;          var ary = myDate.toArray();          var year = ary[0];          var month = ary[1]+1;          var day = ary[2];        return DatePart('ww', DateValue(''+month+'-'+day+'-'+year+''));      }            //+---------------------------------------------------      //| 字符串转成日期类型       //| 格式 MM/dd/YYYY MM-dd-YYYY YYYY/MM/dd YYYY-MM-dd      //+---------------------------------------------------      function StringToDate(DateStr)      {                 var converted = Date.parse(DateStr);          var myDate = new Date(converted);          if (isNaN(myDate))          {               var delimCahar = DateStr.indexOf('/')!=-1?'/':'-';              var arys= DateStr.split(delimCahar);              myDate = new Date(arys[0],arys[1],arys[2]);          }          return myDate;      }      //+---------------------------------------------------      //| 相关操作的快捷封装      //+---------------------------------------------------      function getMyDay(typeId) {    var currentTime = new Date();     switch (typeId) {                   case 1 :                  //今天                    return currentTime.Format('yyyy-MM-dd');                  case 2 :                 //昨天                 return currentTime.DateAdd('d',-1).Format('yyyy-MM-dd');                case 3 :                 //当前月第一天                 return currentTime.MounthFirstDay().Format('yyyy-MM-dd');                case 4 :                //当前月最后一天                return currentTime.MounthLastDay().Format('yyyy-MM-dd');                 case 5 :                //当前周第一天                return currentTime.WeekFirstDay().Format('yyyy-MM-dd');                 case 6 :                //当前周最后一天                return currentTime.WeekLastDay().Format('yyyy-MM-dd');                  case 7 :                //七天前日期                return currentTime.DateAdd('d',-7).Format('yyyy-MM-dd');                case 8 :                //30天前日期                return currentTime.DateAdd('d',-30).Format('yyyy-MM-dd');                case 9 :                //上周第一天                return currentTime.DateAdd('w',-1).WeekFirstDay().Format('yyyy-MM-dd');                case 10:                //上周最后一天                return currentTime.DateAdd('w',-1).WeekLastDay().Format('yyyy-MM-dd');                case 11 :                //上月第一天                return currentTime.DateAdd('m',-1).MounthFirstDay().Format('yyyy-MM-dd');                case 12:                //上月最后一天                return currentTime.DateAdd('m',-1).MounthLastDay().Format('yyyy-MM-dd');                case 13:                //上月最后一天                return currentTime.Format('yyyy-MM-dd');                       }      }
js日期的惯用操作

热点推荐
