JS日期时间函数

JS日期时间函数 JS日期时间函数 JS日期时间函数 日期时间脚本库方法列表 Date.prototype.isLeapYear 判断闰年 Date.prototype.Format 日期格式化 Date.prototype.DateAdd 日期计算 Date.prototype.DateDiff 比较日期差 Date.prototype.toString 日期转字符串 Date.prototype.toArray 日期分割为数组 Date.prototype.DatePart 取日期的部分信息 Date.prototype.MaxDayOfDa‎‎te 取日期所在月的最大天数 Date.prototype.WeekNumOfYear 判断日期所在年的第几周 StringToDate 字符串转日期型 IsValidDate 验证日期有效性 CheckDateTime 完整日期时间检查 daysBetwee‎‎n 日期天数差 1 //--------------------------------------------------- 2 // 判断闰年 3 //--------------------------------------------------- 4 Date.prototype.isLeapYear = function() 5 { 6 return (0==this.getYear()%4&&((this.getYear()%100!=0)||(this.getYear()%400==0))); 7 } 8 9 //--------------------------------------------------- 10 // 日期格式化 11 // 格式 YYYY/yyyy/YY/yy 表示年份 12 // MM/M 月份 13 // W/w 星期 14 // dd/DD/d/D 日期 15 // hh/HH/h/H 时间 16 // mm/m 分钟 17 // ss/SS/s/S 秒 18 //--------------------------------------------------- 19 Date.prototype.Format = function(formatStr) 20 { 21 var str = formatStr; 22 var Week = ['日','一','二','三','四','五','六']; 23 24 str=str.replace(/yyyy|YYYY/,this.getFullYear()); 25 str=str.replace(/yy|YY/,(this.getYear() % 100)>9?(this.getYear() % 100).toString():'0' + (this.getYear() % 100)); 26 27 str=str.replace(/MM/,this.getMonth()>9?this.getMonth().toString():'0' + this.getMonth()); 28 str=str.replace(/M/g,this.getMonth()); 29 30 str=str.replace(/w|W/g,Week[this.getDay()]); 31 32 str=str.replace(/dd|DD/,this.getDate()>9?this.getDate().toString():'0' + this.getDate()); 33 str=str.replace(/d|D/g,this.getDate()); 34 35 str=str.replace(/hh|HH/,this.getHours()>9?this.getHours().toString():'0' + this.getHours()); 36 str=str.replace(/h|H/g,this.getHours()); 37 str=str.replace(/mm/,this.getMinutes()>9?this.getMinutes().toString():'0' + this.getMinutes()); 38 str=str.replace(/m/g,this.getMinutes()); 39 40 str=str.replace(/ss|SS/,this.getSeconds()>9?this.getSeconds‎‎().toString():'0' + this.getSeconds()); 41 str=str.replace(/s|S/g,this.getSeconds()); 42 43 return str; 44 } 45 46 //+--------------------------------------------------- 47 //| 求两个时间的天数差 日期格式为 YYYY-MM-dd 48 //+--------------------------------------------------- 49 function daysBetween(DateOne,DateTwo) 50 { 51 var OneMonth = DateOne.substring(5,DateOne.lastIndexOf ('-')); 52 var OneDay = DateOne.substring(DateOne.length,DateOne.lastIndexOf ('-')+1); 53 var OneYear = DateOne.substring(0,DateOne.indexOf ('-')); 54 55 var TwoMonth = DateTwo.substring(5,DateTwo.lastIndexOf ('-')); 56 var TwoDay = DateTwo.substring(DateTwo.length,DateTwo.lastIndexOf ('-')+1); 57 var TwoYear = DateTwo.substring(0,DateTwo.indexOf ('-')); 58 59 var cha=((Date.parse(OneMonth+'/'+OneDay+'/'+OneYear)- Date.parse(TwoMonth+'/'+TwoDay+'/'+TwoYear))/86400000); 60 return Math.abs(cha); 61 } 62 63 64 //+--------------------------------------------------- 65 //| 日期计算 66 //+--------------------------------------------------- 67 Date.prototype.DateAdd = function(strInterval, Number) { 68 var dtTmp = this; 69 switch (strInterva‎‎l) { 70 case 's' :return new Date(Date.parse(dtTmp) + (1000 * Number)); 71 case 'n' :return new Date(Date.parse(dtTmp) + (60000 * Number)); 72 case 'h' :return new Date(Date.parse(dtTmp) + (3600000 * Number)); 73 case 'd' :return new Date(Date.parse(dtTmp) + (86400000 * Number)); 74 case 'w' :return new Date(Date.parse(dtTmp) + ((86400000 * 7) * Number)); 75 case 'q' :return new Date(dtTmp.getFullYear(), (dtTmp.getMonth()) + Number*3, dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds()); 76 case 'm' :return new Date(dtTmp.getFullYear(), (dtTmp.getMonth()) + Number, dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds()); 77 case 'y' :return new Date((dtTmp.getFullYear() + Number), dtTmp.getMonth(), dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds()); 78 } 79 } 80 81 //+--------------------------------------------------- 82 //| 比较日期差 dtEnd 格式为日期型或者有效日期格式字符串 83 //+--------------------------------------------------- 84 Date.prototype.DateDiff = function(strInterval, dtEnd) { 85 var dtStart = this; 86 if (typeof dtEnd == 'string' )//如果是字符串转换为日期型 87 { 88 dtEnd = StringToDate(dtEnd); 89 } 90 switch (strInterva‎‎l) { 91 case 's' :return parseInt((dtEnd - dtStart) / 1000); 92 case 'n' :return parseInt((dtEnd - dtStart) / 60000); 93 case 'h' :return parseInt((dtEnd - dtStart) / 3600000); 94 case 'd' :return parseInt((dtEnd - dtStart) / 86400000); 95 case 'w' :return parseInt((dtEnd - dtStart) / (86400000 * 7)); 96 case 'm' :return (dtEnd.getMonth()+1)+((dtEnd.getFullYear()-dtStart.getFullYear())*12) - (dtStart.getMonth()+1); 97 case 'y' :return dtEnd.getFullYear() - dtStart.getFullYear(); 98 } 99 } 100 101 //+--------------------------------------------------- 102 //| 日期输出字符串，重载了系统的toString方法 103 //+--------------------------------------------------- 104 Date.prototype.toString = function(showWeek) 105 { 106 var myDate= this; 107 var str = myDate.toLocaleDa‎‎teString(); 108 if (showWeek) 109 { 110 var Week = ['日','一','二','三','四','五','六']; 111 str += ' 星期' + Week[myDate.getDay()]; 112 } 113 return str; 114 } 115 116 //+--------------------------------------------------- 117 //| 日期合法性验证 118 //| 格式为,YYYY-MM-DD或YYYY/MM/DD 119 //+--------------------------------------------------- 120 function IsValidDate(DateStr) 121 { 122 var sDate=DateStr.replace(/(^\s+|\s+$)/g,''); //去两边空格; 123 if(sDate=='') return true; 124 //如果格式满足YYYY-(/)MM-(/)DD或YYYY-(/)M-(/)DD或YYYY-(/)M-(/)D或 YYYY-(/)MM-(/)D就替换为'' 125 //数据库中，合法日期可以是:YYYY-MM/DD(2003-3/21),数据库会自动转换为YYYY-MM-DD格式 126 var s = sDate.replace(/[\d]{ 4,4 }[\-/]{ 1 }[\d]{ 1,2 }[\-/]{ 1 }[\d]{ 1,2 }/g,''); 127 if (s=='') //说明格式满足YYYY-MM-DD或YYYY-M-DD或YYYY-M-D或YYYY-MM-D 128 { 129 var t=new Date(sDate.replace(/\-/g,'/')); 130 var ar = sDate.split(/[-/:]/); 131 if(ar[0] != t.getYear() || ar[1] != t.getMonth()+1 || ar[2] != t.getDate()) 132 { 133 //alert('错误的日期格式,格式为,YYYY-MM-DD或YYYY/MM/DD。注意闰年。'); 134 return false; 135 } 136 } 137 else 138 { 139 //alert('错误的日期格式,格式为,YYYY-MM-DD或YYYY/MM/DD。注意闰年。'); 140 return false; 141 } 142 return true; 143 } 144 145 //+--------------------------------------------------- 146 //| 日期时间检查 147 //| 格式为,YYYY-MM-DD HH:MM:SS 148 //+--------------------------------------------------- 149 function CheckDateTime(str) 150 { 151 var reg = /^(\d+)-(\d{ 1,2 })-(\d{ 1,2 }) (\d{ 1,2 }):(\d{ 1,2 }):(\d{ 1,2 })$/; 152 var r = str.match(reg); 153 if(r==null)return false; 154 r[2]=r[2]-1; 155 var d= new Date(r[1],r[2],r[3],r[4],r[5],r[6]); 156 if(d.getFullYear()!=r[1])return false; 157 if(d.getMonth()!=r[2])return false; 158 if(d.getDate()!=r[3])return false; 159 if(d.getHours()!=r[4])return false; 160 if(d.getMinutes()!=r[5])return false; 161 if(d.getSeconds()!=r[6])return false; 162 return true; 163 } 164 165 //+--------------------------------------------------- 166 //| 把日期分割成数组 167 //+--------------------------------------------------- 168 Date.prototype.toArray = function() 169 { 170 var myDate = this; 171 var myArray = Array(); 172 myArray[0] = myDate.getFullYear(); 173 myArray[1] = myDate.getMonth(); 174 myArray[2] = myDate.getDate(); 175 myArray[3] = myDate.getHours(); 176 myArray[4] = myDate.getMinutes(); 177 myArray[5] = myDate.getSeconds(); 178 return myArray; 179 } 180 181 //+--------------------------------------------------- 182 //| 取得日期数据信息 183 //| 参数 interval 表示数据类型 184 //| y 年 m月 d日 w星期 ww周 h时 n分 s秒 185 //+--------------------------------------------------- 186 Date.prototype.DatePart = function(interval) 187 { 188 var myDate = this; 189 var partStr=''; 190 var Week = ['日','一','二','三','四','五','六']; 191 switch (interval) 192 { 193 case 'y' :partStr = myDate.getFullYear();break; 194 case 'm' :partStr = myDate.getMonth()+1;break; 195 case 'd' :partStr = myDate.getDate();break; 196 case 'w' :partStr = Week[myDate.getDay()];break; 197 case 'ww' :partStr = myDate.WeekNumOfYear();break; 198 case 'h' :partStr = myDate.getHours();break; 199 case 'n' :partStr = myDate.getMinutes();break; 200 case 's' :partStr = myDate.getSeconds();break; 201 } 202 return partStr; 203 } 204 205 //+--------------------------------------------------- 206 //| 取得当前日期所在月的最大天数 207 //+--------------------------------------------------- 208 Date.prototype.MaxDayOfDa‎‎te = function() 209 { 210 var myDate = this; 211 var ary = myDate.toArray(); 212 var date1 = (new Date(ary[0],ary[1]+1,1)); 213 var date2 = date1.dateAdd(1,'m',1); 214 var result = dateDiff(date1.Format('yyyy-MM-dd'),date2.Format('yyyy-MM-dd')); 215 return result; 216 } 217 218 //+--------------------------------------------------- 219 //| 取得当前日期所在周是一年中的第几周 220 //+--------------------------------------------------- 221 Date.prototype.WeekNumOfYear = function() 222 { 223 var myDate = this; 224 var ary = myDate.toArray(); 225 var year = ary[0]; 226 var month = ary[1]+1; 227 var day = ary[2]; 228 document.write('< script language=VBScript\> \n'); 229 document.write('myDate = Datue(''+month+'-'+day+'-'+year+'') \n'); 230 document.write('result = DatePart('ww', myDate) \n'); 231 document.write(' \n'); 232 return result; 233 } 234 235 //+--------------------------------------------------- 236 //| 字符串转成日期类型 237 //| 格式 MM/dd/YYYY MM-dd-YYYY YYYY/MM/dd YYYY-MM-dd 238 //+--------------------------------------------------- 239 function Strin‎‎gToDate(DateStr) 240 { 241 242 var converted = Date.parse(DateStr); 243 var myDate = new Date(converted); 244 if (isNaN(myDate)) 245 { 246 //var delimCahar‎‎ = DateStr.indexOf('/')!=-1?'/':'-'; 247 var arys= DateStr.split('-'); 248 myDate = new Date(arys[0],--arys[1],arys[2]); 249 } 250 return myDat‎‎e; 251 } 252