javascript中对Date类型的常用操作小结
16.
17.
18.
26.Date.isValiDate = function(dateStr, formatStr)
27.{
28. if(!dateStr){
29. return false;
30. }
31. if(!formatStr){
32. formatStr = "yyyy-MM-dd";//默认格式：yyyy-MM-dd
33. }
34. if(dateStr.length!=formatStr.length){
35. return false;
36. }else{
37. if(formatStr=="yyyy-MM-dd"||formatStr=="YYYY-MM-DD"){
38. var r1=/^(((((([02468][048])|([13579][26]))(00))|(d{2}(([02468][48])|([13579][26]))))-((((0[13578])|(1[02]))-(([0-2][0-9])|(3[01])))|(((0[469])|(11))-(([0-2][0-9])|(30)))|(02-([0-2][0-9]))))|(d{2}(([02468][1235679])|([13579][01345789]))-((((0[13578])|(1[02]))-(([0-2][0-9])|(3[01])))|(((0[469])|(11))-(([0-2][0-9])|(30)))|(02-(([0-1][0-9])|(2[0-8]))))))$/;
39. return r1.test(dateStr);
40. }else if(formatStr=="yyyy/MM/dd"||formatStr=="YYYY/MM/DD"){
41. var r2=/^(((((([02468][048])|([13579][26]))(00))|(d{2}(([02468][48])|([13579][26]))))/((((0[13578])|(1[02]))/(([0-2][0-9])|(3[01])))|(((0[469])|(11))/(([0-2][0-9])|(30)))|(02/([0-2][0-9]))))|(d{2}(([02468][1235679])|([13579][01345789]))/((((0[13578])|(1[02]))/(([0-2][0-9])|(3[01])))|(((0[469])|(11))/(([0-2][0-9])|(30)))|(02/(([0-1][0-9])|(2[0-8]))))))$/;
42. return r2.test(dateStr);
43. }else if(formatStr=="MM-dd-yyyy"||formatStr=="MM-DD-YYYY"){
44. var r3=/^((((((0[13578])|(1[02]))-(([0-2][0-9])|(3[01])))|(((0[469])|(11))-(([0-2][0-9])|(30)))|(02-([0-2][0-9])))-(((([02468][048])|([13579][26]))(00))|(d{2}(([02468][48])|([13579][26])))))|(((((0[13578])|(1[02]))-(([0-2][0-9])|(3[01])))|(((0[469])|(11))-(([0-2][0-9])|(30)))|(02-(([0-1][0-9])|(2[0-8])))))-d{2}(([02468][1235679])|([13579][01345789])))$/;
45. return r3.test(dateStr);
46. }else if(formatStr=="MM/dd/yyyy"||formatStr=="MM/DD/YYYY"){
47. var r4=/^((((((0[13578])|(1[02]))/(([0-2][0-9])|(3[01])))|(((0[469])|(11))/(([0-2][0-9])|(30)))|(02/([0-2][0-9])))/(((([02468][048])|([13579][26]))(00))|(d{2}(([02468][48])|([13579][26])))))|(((((0[13578])|(1[02]))/(([0-2][0-9])|(3[01])))|(((0[469])|(11))/(([0-2][0-9])|(30)))|(02/(([0-1][0-9])|(2[0-8])))))/d{2}(([02468][1235679])|([13579][01345789])))$/;
48. return r4.test(dateStr);
49. }else{
50. alert("日期格式不正确！");
51. return false;
52. }
53. }
54. return false;
55.}
56.
57.
58.
66.Date.isValiTime = function(timeStr, formatStr)
67.{
68. if(!timeStr){
69. return false;
70. }
71. if(!formatStr){
72. formatStr = "hh:mm:ss";//默认格式：hh:mm:ss
73. }
74. if(timeStr.length!=formatStr.length){
75. return false;
76. }else{
77. if(formatStr=="hh:mm:ss"){
78. var r1=/^(([0-1][0-9])|(2[0-3])):([0-5][0-9]):([0-5][0-9])$/;
79. return r1.test(timeStr);
80. }else if(formatStr=="hh-mm-ss"){
81. var r2=/^(([0-1][0-9])|(2[0-3]))-([0-5][0-9])-([0-5][0-9])$/;
82. return r2.test(timeStr);
83. }else if(formatStr=="hh/mm/ss"){
84. var r3=/^(([0-1][0-9])|(2[0-3]))/([0-5][0-9])/([0-5][0-9])$/;
85. return r3.test(timeStr);
86. }else{
87. alert("时间格式不正确！");
88. return false;
89. }
90. }
91. return false;
92.}
93.
94.
95.
99.Date.isValiDateTime = function(dateTimeStr)
100.{
101. var dateTimeReg=/^(((((([02468][048])|([13579][26]))(00))|(d{2}(([02468][48])|([13579][26]))))-((((0[13578])|(1[02]))-(([0-2][0-9])|(3[01])))|(((0[469])|(11))-(([0-2][0-9])|(30)))|(02-([0-2][0-9]))))|(d{2}(([02468][1235679])|([13579][01345789]))-((((0[13578])|(1[02]))-(([0-2][0-9])|(3[01])))|(((0[469])|(11))-(([0-2][0-9])|(30)))|(02-(([0-1][0-9])|(2[0-8]))))))(s{1}(([0-1][0-9])|(2[0-3])):([0-5][0-9]):([0-5][0-9]))?$/
102. return dateTimeReg.test(dateTimeStr);
103.}
104.
105.
106.
109.Date.prototype.isLeapYear = function()
110.{
111. return (this.getYear()%4==0&&((this.getYear()%100!=0)||(this.getYear()%400==0)));
112.}
113.
114.
115.
128.Date.prototype.format = function(formatStr)
129.{
130. var str = formatStr;
131. if(!formatStr){
132. str = "yyyy-MM-dd hh:mm:ss";//默认格式
133. }
134. var Week = ['日','一','二','三','四','五','六'];
135.
136. str=str.replace(/yyyy|YYYY/,this.getFullYear());
137. str=str.replace(/yy|YY/,(this.getYear() % 100)>9?(this.getYear() % 100).toString():'0' + (this.getYear() % 100));
138.
139. str=str.replace(/MM/,this.getMonth()>=9?(parseInt(this.getMonth())+1).toString():'0' + (parseInt(this.getMonth())+1));
140. str=str.replace(/M/g,(parseInt(this.getMonth())+1));
141.
142. str=str.replace(/w|W/g,Week[this.getDay()]);
143.
144. str=str.replace(/dd|DD/,this.getDate()>9?this.getDate().toString():'0' + this.getDate());
145. str=str.replace(/d|D/g,this.getDate());
146.
147. str=str.replace(/hh|HH/,this.getHours()>9?this.getHours().toString():'0' + this.getHours());
148. str=str.replace(/h|H/g,this.getHours());
149. str=str.replace(/mm/,this.getMinutes()>9?this.getMinutes().toString():'0' + this.getMinutes());
150. str=str.replace(/m/g,this.getMinutes());
151.
152. str=str.replace(/ss|SS/,this.getSeconds()>9?this.getSeconds().toString():'0' + this.getSeconds());
153. str=str.replace(/s|S/g,this.getSeconds());
154.
155. str=str.replace(/iii/g,this.getMilliseconds()<10?'00'+this.getMilliseconds():(this.getMilliseconds()<100?'0'+this.getMilliseconds():this.getMilliseconds()));
156.
157. return str;
158.}
159.
160.
161.
170.Date.stringToDate = function(dateStr)
171.{
172. if(!dateStr){
173. alert("字符串无法解析为日期");
174. return null;
175. }else{
176. if(Date.isValiDate(dateStr,"yyyy/MM/dd")||Date.isValiDate(dateStr,"MM/dd/yyyy")){
177. return new Date(Date.parse(dateStr));
178. }else{
179. if((!-[1,])){//IE
180. if(Date.isValiDate(dateStr,"MM-dd-yyyy")){
181. return new Date(Date.parse(dateStr));
182. }else{
183. alert("字符串无法解析为日期");
184. return null;
185. }
186. }else{//非IE
187. if(Date.isValiDate(dateStr,"yyyy-MM-dd")){
188. return new Date(Date.parse(dateStr));
189. }else{
190. alert("字符串无法解析为日期");
191. return null;
192. }
193. }
194. }
195. }
196. return null;
197.}
198.
199.
200.
205.Date.daysBetween = function(dateOne,dateTwo)
206.{
207. if((dateOne instanceof Date)==false||(dateTwo instanceof Date)==false){
208. return 0;
209. }else{
210. return Math.abs(Math.floor((dateOne.getTime()-dateTwo.getTime())/1000/60/60/24));
211. }
212.}
213.
214.
215.
229.Date.prototype.dateAdd = function(num, field)
230.{
231. if((!num)||isNaN(num)||parseInt(num)==0){
232. return this;
233. }
234. if(!field){
235. field = "d";
236. }
237. switch(field){
238. case 'Y':
239. case 'y':return new Date((this.getFullYear()+num), this.getMonth(), this.getDate(), this.getHours(), this.getMinutes(), this.getSeconds());break;
240. case 'Q':
241. case 'q':return new Date(this.getFullYear(), (this.getMonth()+num*3), this.getDate(), this.getHours(), this.getMinutes(), this.getSeconds());break;
242. case 'M':return new Date(this.getFullYear(), this.getMonth()+num, this.getDate(), this.getHours(), this.getMinutes(), this.getSeconds());break;
243. case 'W':
244. case 'w':return new Date(Date.parse(this) + ((86400000 * 7) * num));break;
245. case 'D':
246. case 'd':return new Date(Date.parse(this) + (86400000 * num));break;
247. case 'H':
248. case 'h':return new Date(Date.parse(this) + (3600000 * num));break;
249. case 'm':return new Date(Date.parse(this) + (60000 * num));break;
250. case 'S':
251. case 's':return new Date(Date.parse(this) + (1000 * num));break;
252. default: return this;
253. }
254. return this;
255.}
256.
257.
258.
271.Date.prototype.dateDiff = function(dtEnd, field)
272.{
273. var dtStart = this;
274. if((dtEnd instanceof Date)==false){
275. return 0;
276. }else{
277. if(!field){
278. field = "d";
279. }
280. switch(field){
281. case 'Y':
282. case 'y':return dtEnd.getFullYear() - dtStart.getFullYear();break;
283. case 'M':return (dtEnd.getMonth()+1)+((dtEnd.getFullYear()-dtStart.getFullYear())*12) - (dtStart.getMonth()+1);break;
284. case 'W':
285. case 'w':return parseInt((dtEnd - dtStart) / (86400000 * 7));break;
286. case 'D':
287. case 'd':return parseInt((dtEnd - dtStart) / 86400000);break;
288. case 'H':
289. case 'h':return parseInt((dtEnd - dtStart) / 3600000);break;
290. case 'm':return parseInt((dtEnd - dtStart) / 60000);break;
291. case 'S':
292. case 's':return parseInt((dtEnd - dtStart) / 1000);break;
293. default: return 0;
294. }
295. return 0;
296. }
297.}
298.
299.
300.
303.Date.prototype.toArray = function()
304.{
305. var myArray = new Array();
306. myArray[0] = this.getFullYear();
307. myArray[1] = this.getMonth();
308. myArray[2] = this.getDate();
309. myArray[3] = this.getHours();
310. myArray[4] = this.getMinutes();
311. myArray[5] = this.getSeconds();
312. return myArray;
313.}
314.
315.
316.
327.Date.prototype.datePart = function(field)
328.{
329. if(!field){
330. field = "d";
331. }
332. var Week = ['日','一','二','三','四','五','六'];
333. switch (field){
334. case 'Y' :
335. case 'y' :return this.getFullYear();break;
336. case 'M' :return (this.getMonth()+1);break;
337. case 'W' :
338. case 'w' :return Week[this.getDay()];break;
339. case 'D' :
340. case 'd' :return this.getDate();break;
341. case 'H' :
342. case 'h' :return this.getHours();break;
343. case 'm' :return this.getMinutes();break;
344. case 's' :return this.getSeconds();break;
345. default:return this.getDate();
346. }
347. return this.getDate();
348.}
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