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 }
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