js日期时间函数(经典＋完善＋实用)(转)

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 = DateValue(''+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 }