javascript Date时间操作

Date.prototype.pattern = function(A) {
var D = {
"M+" : this.getMonth() + 1,
"d+" : this.getDate(),
"h+" : this.getHours() % 12 == 0 ? 12 : this.getHours() % 12,
"H+" : this.getHours(),
"m+" : this.getMinutes(),
"s+" : this.getSeconds(),
"q+" : Math.floor((this.getMonth() + 3) / 3),
"S" : this.getMilliseconds()
};
var B = {
"0" : "/u65e5",
"1" : "/u4e00",
"2" : "/u4e8c",
"3" : "/u4e09",
"4" : "/u56db",
"5" : "/u4e94",
"6" : "/u516d"
};
if (/(y+)/.test(A)) {
A = A.replace(RegExp.$1, (this.getFullYear() + "")
.substr(4 - RegExp.$1.length))
}
if (/(E+)/.test(A)) {
A = A
.replace(
RegExp.$1,
((RegExp.$1.length > 1) ? (RegExp.$1.length > 2 ? "/u661f/u671f"
: "/u5468")
: "")
+ B[this.getDay() + ""])
}
for ( var C in D) {
if (new RegExp("(" + C + ")").test(A)) {
A = A.replace(RegExp.$1, (RegExp.$1.length == 1) ? (D[C])
: (("00" + D[C]).substr(("" + D[C]).length)))
}
}
return A
};
Date.prototype.isLeapYear = function() {
return (0 == this.getYear() % 4 && ((this.getYear() % 100 != 0) || (this
.getYear() % 400 == 0)))
};
Date.prototype.Format = function(C) {
var B = C;
var A = ['日','一','二','三','四','五','六'];
B = B.replace(/yyyy|YYYY/, this.getFullYear());
B = B.replace(/yy|YY/, (this.getYear() % 100) > 9 ? (this.getYear() % 100)
.toString() : "0" + (this.getYear() % 100));
B = B.replace(/MM/, this.getMonth() > 9 ? this.getMonth().toString() : "0"
+ this.getMonth());
B = B.replace(/M/g, this.getMonth());
B = B.replace(/w|W/g, A[this.getDay()]);
B = B.replace(/dd|DD/, this.getDate() > 9 ? this.getDate().toString() : "0"
+ this.getDate());
B = B.replace(/d|D/g, this.getDate());
B = B.replace(/hh|HH/, this.getHours() > 9 ? this.getHours().toString()
: "0" + this.getHours());
B = B.replace(/h|H/g, this.getHours());
B = B.replace(/mm/, this.getMinutes() > 9 ? this.getMinutes().toString()
: "0" + this.getMinutes());
B = B.replace(/m/g, this.getMinutes());
B = B.replace(/ss|SS/, this.getSeconds() > 9 ? this.getSeconds().toString()
: "0" + this.getSeconds());
B = B.replace(/s|S/g, this.getSeconds());
return B
};
function daysBetween(A, I) {
var B = A.substring(5, A.lastIndexOf("-"));
var F = A.substring(A.length, A.lastIndexOf("-") + 1);
var C = A.substring(0, A.indexOf("-"));
var D = I.substring(5, I.lastIndexOf("-"));
var G = I.substring(I.length, I.lastIndexOf("-") + 1);
var E = I.substring(0, I.indexOf("-"));
var H = ((Date.parse(B + "/" + F + "/" + C) - Date.parse(D + "/" + G + "/"
+ E)) / 86400000);
return Math.abs(H)
}
Date.prototype.DateAdd = function(A, B) {
var C = this;
switch (A) {
case "s":
return new Date(C.getTime() + (1000 * B));
case "n":
return new Date(C.getTime() + (60000 * B));
case "h":
return new Date(C.getTime() + (3600000 * B));
case "d":
return new Date(C.getTime() + (86400000 * B));
case "w":
return new Date(C.getTime() + ((86400000 * 7) * B));
case "q":
return new Date(C.getFullYear(), (C.getMonth()) + B * 3, C.getDate(), C
.getHours(), C.getMinutes(), C.getSeconds());
case "m":
return new Date(C.getFullYear(), (C.getMonth()) + B, C.getDate(), C
.getHours(), C.getMinutes(), C.getSeconds());
case "y":
return new Date((C.getFullYear() + B), C.getMonth(), C.getDate(), C
.getHours(), C.getMinutes(), C.getSeconds())
}
};
Date.prototype.DateDiff = function(A, B) {
var C = this;
if (typeof B == "string") {
B = StringToDate(B)
}
switch (A) {
case "s":
return parseInt((B - C) / 1000);
case "n":
return parseInt((B - C) / 60000);
case "h":
return parseInt((B - C) / 3600000);
case "d":
return parseInt((B - C) / 86400000);
case "w":
return parseInt((B - C) / (86400000 * 7));
case "m":
return (B.getMonth() + 1) + ((B.getFullYear() - C.getFullYear()) * 12)
- (C.getMonth() + 1);
case "y":
return B.getFullYear() - C.getFullYear()
}
};
function StringToDate(C) {
var A = Date.parse(C);
var B = new Date(A);
if (isNaN(B)) {
var D = C.split("-");
B = new Date(D[0], --D[1], D[2])
}
return B
}
function DateAdd(C, A, B) {
switch (A) {
case "s":
return new Date(C.getTime() + (1000 * B));
case "n":
return new Date(C.getTime() + (60000 * B));
case "h":
return new Date(C.getTime() + (3600000 * B));
case "d":
return new Date(C.getTime() + (86400000 * B));
case "w":
return new Date(C.getTime() + ((86400000 * 7) * B));
case "q":
return new Date(dtTmp.getFullYear(), (dtTmp.getMonth()) + B * 3, dtTmp
.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp
.getSeconds());
case "m":
return new Date(dtTmp.getFullYear(), (dtTmp.getMonth()) + B, dtTmp
.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp
.getSeconds());
case "y":
return new Date((dtTmp.getFullYear() + B), dtTmp.getMonth(), dtTmp
.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp
.getSeconds())
}
}
function DateDiff(A, C, B) {
if (typeof B == "string") {
B = StringToDate(B)
}
switch (A) {
case "s":
return parseInt((B - C) / 1000);
case "n":
return parseInt((B - C) / 60000);
case "h":
return parseInt((B - C) / 3600000);
case "d":
return parseInt((B - C) / 86400000);
case "w":
return parseInt((B - C) / (86400000 * 7));
case "m":
return (B.getMonth() + 1) + ((B.getFullYear() - C.getFullYear()) * 12)
- (C.getMonth() + 1);
case "y":
return B.getFullYear() - C.getFullYear()
}
}
Date.prototype.toString = function(B) {
var A = this;
var D = A.toLocaleDateString();
if (B) {
var C = ['日','一','二','三','四','五','六'];
D += " 星期" + C[A.getDay()]
}
return D
};
function CheckDateTime(C) {
var B = /^(\d+)-(\d{ 1,2 })-(\d{ 1,2 }) (\d{ 1,2 }):(\d{ 1,2 }):(\d{ 1,2 })$/;
var A = C.match(B);
if (A == null) {
return false
}
A[2] = A[2] - 1;
var D = new Date(A[1], A[2], A[3], A[4], A[5], A[6]);
if (D.getFullYear() != A[1]) {
return false
}
if (D.getMonth() != A[2]) {
return false
}
if (D.getDate() != A[3]) {
return false
}
if (D.getHours() != A[4]) {
return false
}
if (D.getMinutes() != A[5]) {
return false
}
if (D.getSeconds() != A[6]) {
return false
}
return true
}
Date.prototype.toArray = function() {
var A = this;
var B = Array();
B[0] = A.getFullYear();
B[1] = A.getMonth();
B[2] = A.getDate();
B[3] = A.getHours();
B[4] = A.getMinutes();
B[5] = A.getSeconds();
return B
};
Date.prototype.DatePart = function(C) {
var A = this;
var D = "";
var B = ['日','一','二','三','四','五','六'];
switch (C) {
case "y":
D = A.getFullYear();
break;
case "m":
D = A.getMonth() + 1;
break;
case "d":
D = A.getDate();
break;
case "w":
D = B[A.getDay()];
break;
case "ww":
D = A.WeekNumOfYear();
break;
case "h":
D = A.getHours();
break;
case "n":
D = A.getMinutes();
break;
case "s":
D = A.getSeconds();
break
}
return D
};
Date.prototype.MaxDayOfDate = function() {
var C = this;
var B = C.toArray();
var E = (new Date(B[0], B[1] + 1, 1));
var D = E.DateAdd(1, "m", 1);
var A = DateDiff(E.Format("yyyy-MM-dd"), D.Format("yyyy-MM-dd"));
return A
};
function StringToDate(C) {
var A = Date.parse(C);
var B = new Date(A);
if (isNaN(B)) {
var D = C.split("-");
B = new Date(D[0], --D[1], D[2])
}
return B
}
function DateCompare(C, A) {
var B = Date.parse(C) - Date.parse(A);
if (B == 0) {
return 0
} else {
if (B < 0) {
return 1
} else {
if (B > 0) {
return -1
}
}
}
}
function isDate(A) {
if (A.trim() == "") {
return true
}
var C = A.match(/^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2})$/);
if (C == null) {
return false
}
var B = new Date(C[1], C[3] - 1, C[4]);
var D = (B.getFullYear() == C[1] && (B.getMonth() + 1) == C[3] && B
.getDate() == C[4]);
if (D == 0) {
return false
}
return (D != 0)
};

var date = new Date();
//后退一天
alert(date.DateAdd('d',-1).pattern('yyyy-MM-dd'));
//得到两个日期之间的天数
alert(daysBetween('2014-10-11','2014-10-19'));
//字符串转日期
alert(StringToDate('2014-10-11'));
//比较时间前后
alert(DateCompare('2014-10-11','2014-10-11'));