javascript - 波斯历中现在和给定日期之间的差异
问题描述
这是获取两次之间差异的代码。
// input your custom Date below
var date = new Date('2020-06-12 22:00:00');
var dif = (date.getTime() / 1000) - ((new Date().getTime())/1000);
var end = Math.max(0, dif);
console.log(end);
我希望能够将公历日期更改为波斯语(太阳回历),如下所示:
var date = new Date('1399-03-23 22:00:00');
我用过.toLocaleDateString('fa-IR');
,但它会导致错误...
解决方案
尝试使用此库进行转换:
let input = '1399-03-22 12:34'
let date = new Date(input)
let [y, m, d] = JalaliDate.jalaliToGregorian(date.getFullYear(), date.getMonth(), date.getDate())
date.setFullYear(y)
date.setMonth(m)
date.setDate(d)
console.log(date)
<script>
/*
* JalaliJSCalendar - Jalali Extension for Date Object
* Copyright (c) 2008 Ali Farhadi (http://farhadi.ir/)
* Released under the terms of the GNU General Public License.
* See the GPL for details (http://www.gnu.org/licenses/gpl.html).
*
* Based on code from http://farsiweb.info
*/
JalaliDate = {
g_days_in_month: [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31],
j_days_in_month: [31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 29]
};
JalaliDate.jalaliToGregorian = function(j_y, j_m, j_d) {
j_y = parseInt(j_y);
j_m = parseInt(j_m);
j_d = parseInt(j_d);
var jy = j_y - 979;
var jm = j_m - 1;
var jd = j_d - 1;
var j_day_no = 365 * jy + parseInt(jy / 33) * 8 + parseInt((jy % 33 + 3) / 4);
for (var i = 0; i < jm; ++i) j_day_no += JalaliDate.j_days_in_month[i];
j_day_no += jd;
var g_day_no = j_day_no + 79;
var gy = 1600 + 400 * parseInt(g_day_no / 146097); /* 146097 = 365*400 + 400/4 - 400/100 + 400/400 */
g_day_no = g_day_no % 146097;
var leap = true;
if (g_day_no >= 36525) /* 36525 = 365*100 + 100/4 */ {
g_day_no--;
gy += 100 * parseInt(g_day_no / 36524); /* 36524 = 365*100 + 100/4 - 100/100 */
g_day_no = g_day_no % 36524;
if (g_day_no >= 365)
g_day_no++;
else
leap = false;
}
gy += 4 * parseInt(g_day_no / 1461); /* 1461 = 365*4 + 4/4 */
g_day_no %= 1461;
if (g_day_no >= 366) {
leap = false;
g_day_no--;
gy += parseInt(g_day_no / 365);
g_day_no = g_day_no % 365;
}
for (var i = 0; g_day_no >= JalaliDate.g_days_in_month[i] + (i == 1 && leap); i++)
g_day_no -= JalaliDate.g_days_in_month[i] + (i == 1 && leap);
var gm = i + 1;
var gd = g_day_no + 1;
return [gy, gm, gd];
}
JalaliDate.checkDate = function(j_y, j_m, j_d) {
return !(j_y < 0 || j_y > 32767 || j_m < 1 || j_m > 12 || j_d < 1 || j_d >
(JalaliDate.j_days_in_month[j_m - 1] + (j_m == 12 && !((j_y - 979) % 33 % 4))));
}
JalaliDate.gregorianToJalali = function(g_y, g_m, g_d) {
g_y = parseInt(g_y);
g_m = parseInt(g_m);
g_d = parseInt(g_d);
var gy = g_y - 1600;
var gm = g_m - 1;
var gd = g_d - 1;
var g_day_no = 365 * gy + parseInt((gy + 3) / 4) - parseInt((gy + 99) / 100) + parseInt((gy + 399) / 400);
for (var i = 0; i < gm; ++i)
g_day_no += JalaliDate.g_days_in_month[i];
if (gm > 1 && ((gy % 4 == 0 && gy % 100 != 0) || (gy % 400 == 0)))
/* leap and after Feb */
++g_day_no;
g_day_no += gd;
var j_day_no = g_day_no - 79;
var j_np = parseInt(j_day_no / 12053);
j_day_no %= 12053;
var jy = 979 + 33 * j_np + 4 * parseInt(j_day_no / 1461);
j_day_no %= 1461;
if (j_day_no >= 366) {
jy += parseInt((j_day_no - 1) / 365);
j_day_no = (j_day_no - 1) % 365;
}
for (var i = 0; i < 11 && j_day_no >= JalaliDate.j_days_in_month[i]; ++i) {
j_day_no -= JalaliDate.j_days_in_month[i];
}
var jm = i + 1;
var jd = j_day_no + 1;
return [jy, jm, jd];
}
Date.prototype.setJalaliFullYear = function(y, m, d) {
var gd = this.getDate();
var gm = this.getMonth();
var gy = this.getFullYear();
var j = JalaliDate.gregorianToJalali(gy, gm + 1, gd);
if (y < 100) y += 1300;
j[0] = y;
if (m != undefined) {
if (m > 11) {
j[0] += Math.floor(m / 12);
m = m % 12;
}
j[1] = m + 1;
}
if (d != undefined) j[2] = d;
var g = JalaliDate.jalaliToGregorian(j[0], j[1], j[2]);
return this.setFullYear(g[0], g[1] - 1, g[2]);
}
Date.prototype.setJalaliMonth = function(m, d) {
var gd = this.getDate();
var gm = this.getMonth();
var gy = this.getFullYear();
var j = JalaliDate.gregorianToJalali(gy, gm + 1, gd);
if (m > 11) {
j[0] += Math.floor(m / 12);
m = m % 12;
}
j[1] = m + 1;
if (d != undefined) j[2] = d;
var g = JalaliDate.jalaliToGregorian(j[0], j[1], j[2]);
return this.setFullYear(g[0], g[1] - 1, g[2]);
}
Date.prototype.setJalaliDate = function(d) {
var gd = this.getDate();
var gm = this.getMonth();
var gy = this.getFullYear();
var j = JalaliDate.gregorianToJalali(gy, gm + 1, gd);
j[2] = d;
var g = JalaliDate.jalaliToGregorian(j[0], j[1], j[2]);
return this.setFullYear(g[0], g[1] - 1, g[2]);
}
Date.prototype.getJalaliFullYear = function() {
var gd = this.getDate();
var gm = this.getMonth();
var gy = this.getFullYear();
var j = JalaliDate.gregorianToJalali(gy, gm + 1, gd);
return j[0];
}
Date.prototype.getJalaliMonth = function() {
var gd = this.getDate();
var gm = this.getMonth();
var gy = this.getFullYear();
var j = JalaliDate.gregorianToJalali(gy, gm + 1, gd);
return j[1] - 1;
}
Date.prototype.getJalaliDate = function() {
var gd = this.getDate();
var gm = this.getMonth();
var gy = this.getFullYear();
var j = JalaliDate.gregorianToJalali(gy, gm + 1, gd);
return j[2];
}
Date.prototype.getJalaliDay = function() {
var day = this.getDay();
day = (day + 1) % 7;
return day;
}
/**
* Jalali UTC functions
*/
Date.prototype.setJalaliUTCFullYear = function(y, m, d) {
var gd = this.getUTCDate();
var gm = this.getUTCMonth();
var gy = this.getUTCFullYear();
var j = JalaliDate.gregorianToJalali(gy, gm + 1, gd);
if (y < 100) y += 1300;
j[0] = y;
if (m != undefined) {
if (m > 11) {
j[0] += Math.floor(m / 12);
m = m % 12;
}
j[1] = m + 1;
}
if (d != undefined) j[2] = d;
var g = JalaliDate.jalaliToGregorian(j[0], j[1], j[2]);
return this.setUTCFullYear(g[0], g[1] - 1, g[2]);
}
Date.prototype.setJalaliUTCMonth = function(m, d) {
var gd = this.getUTCDate();
var gm = this.getUTCMonth();
var gy = this.getUTCFullYear();
var j = JalaliDate.gregorianToJalali(gy, gm + 1, gd);
if (m > 11) {
j[0] += Math.floor(m / 12);
m = m % 12;
}
j[1] = m + 1;
if (d != undefined) j[2] = d;
var g = JalaliDate.jalaliToGregorian(j[0], j[1], j[2]);
return this.setUTCFullYear(g[0], g[1] - 1, g[2]);
}
Date.prototype.setJalaliUTCDate = function(d) {
var gd = this.getUTCDate();
var gm = this.getUTCMonth();
var gy = this.getUTCFullYear();
var j = JalaliDate.gregorianToJalali(gy, gm + 1, gd);
j[2] = d;
var g = JalaliDate.jalaliToGregorian(j[0], j[1], j[2]);
return this.setUTCFullYear(g[0], g[1] - 1, g[2]);
}
Date.prototype.getJalaliUTCFullYear = function() {
var gd = this.getUTCDate();
var gm = this.getUTCMonth();
var gy = this.getUTCFullYear();
var j = JalaliDate.gregorianToJalali(gy, gm + 1, gd);
return j[0];
}
Date.prototype.getJalaliUTCMonth = function() {
var gd = this.getUTCDate();
var gm = this.getUTCMonth();
var gy = this.getUTCFullYear();
var j = JalaliDate.gregorianToJalali(gy, gm + 1, gd);
return j[1] - 1;
}
Date.prototype.getJalaliUTCDate = function() {
var gd = this.getUTCDate();
var gm = this.getUTCMonth();
var gy = this.getUTCFullYear();
var j = JalaliDate.gregorianToJalali(gy, gm + 1, gd);
return j[2];
}
Date.prototype.getJalaliUTCDay = function() {
var day = this.getUTCDay();
day = (day + 1) % 7;
return day;
}
</script>
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