I have a function like this:
var date = new Date();
var d = date.getDate();
var m = date.getMonth();
var y = date.getFullYear();
var hdr = {};
and there is another function to convert it:
function gregorian_to_jalali($g_y,$g_m,$g_d,$mod=''){
$g_y=tr_num($g_y); $g_m=tr_num($g_m); $g_d=tr_num($g_d);
$d_4=$g_y%4;
$g_a=array(0,0,31,59,90,120,151,181,212,243,273,304,334);
$doy_g=$g_a[(int)$g_m]+$g_d;
if($d_4==0 and $g_m>2)$doy_g++;
$d_33=(int)((($g_y-16)%132)*.0305);
$a=($d_33==3 or $d_33<($d_4-1) or $d_4==0)?286:287;
$b=(($d_33==1 or $d_33==2) and ($d_33==$d_4 or $d_4==1))?78:(($d_33==3 and $d_4==0)?80:79);
if((int)(($g_y-10)/63)==30){$a--;$b++;}
if($doy_g>$b){
$jy=$g_y-621; $doy_j=$doy_g-$b;
}else{
$jy=$g_y-622; $doy_j=$doy_g+$a;
}
if($doy_j<187){
$jm=(int)(($doy_j-1)/31); $jd=$doy_j-(31*$jm++);
}else{
$jm=(int)(($doy_j-187)/30); $jd=$doy_j-186-($jm*30); $jm+=7;
}
return($mod=='')?array($jy,$jm,$jd):$jy.$mod.$jm.$mod.$jd;
}
I'm just confused how to use this functions to convert that hdr date to jalali date? I tried this but didn't work:
1
var date = new jdate();
var d = date.getDate();
var m = date.getMonth();
var y = date.getFullYear();
var hdr = {};
2 also this:
var date = new Date();
var d = date.getDate();
var m = date.getMonth();
var y = date.getFullYear();
var hdr = gregorian_to_jalali(y,m,d);
//var hdr = {};
What do I do wrong?
and what this line do: var hdr = {}; ?
let me explain whole of my work, I using a calendar and I want to change it to jalali calendar, this my functions:
$('#calendar').fullCalendar({
header: hdr,
editable: true,
droppable: true, // this allows things to be dropped onto the calendar !!!
drop: function drop(date) {
// this function is called when something is dropped
// retrieve the dropped element's stored Event Object
var originalEventObject = $(this).data('eventObject');
// we need to copy it, so that multiple events don't have a reference to the same object
var copiedEventObject = $.extend({}, originalEventObject);
// assign it the date that was reported
copiedEventObject.start = date;
// render the event on the calendar
// the last `true` argument determines if the event "sticks" (/)
$('#calendar').fullCalendar('renderEvent', copiedEventObject, true);
// is the "remove after drop" checkbox checked?
if ($('#drop-remove').is(':checked')) {
// if so, remove the element from the "Draggable Events" list
$(this).remove();
}
},
windowResize: function windowResize(event, ui) {
$('#calendar').fullCalendar('render');
}
});
I have a function like this:
var date = new Date();
var d = date.getDate();
var m = date.getMonth();
var y = date.getFullYear();
var hdr = {};
and there is another function to convert it:
function gregorian_to_jalali($g_y,$g_m,$g_d,$mod=''){
$g_y=tr_num($g_y); $g_m=tr_num($g_m); $g_d=tr_num($g_d);
$d_4=$g_y%4;
$g_a=array(0,0,31,59,90,120,151,181,212,243,273,304,334);
$doy_g=$g_a[(int)$g_m]+$g_d;
if($d_4==0 and $g_m>2)$doy_g++;
$d_33=(int)((($g_y-16)%132)*.0305);
$a=($d_33==3 or $d_33<($d_4-1) or $d_4==0)?286:287;
$b=(($d_33==1 or $d_33==2) and ($d_33==$d_4 or $d_4==1))?78:(($d_33==3 and $d_4==0)?80:79);
if((int)(($g_y-10)/63)==30){$a--;$b++;}
if($doy_g>$b){
$jy=$g_y-621; $doy_j=$doy_g-$b;
}else{
$jy=$g_y-622; $doy_j=$doy_g+$a;
}
if($doy_j<187){
$jm=(int)(($doy_j-1)/31); $jd=$doy_j-(31*$jm++);
}else{
$jm=(int)(($doy_j-187)/30); $jd=$doy_j-186-($jm*30); $jm+=7;
}
return($mod=='')?array($jy,$jm,$jd):$jy.$mod.$jm.$mod.$jd;
}
I'm just confused how to use this functions to convert that hdr date to jalali date? I tried this but didn't work:
1
var date = new jdate();
var d = date.getDate();
var m = date.getMonth();
var y = date.getFullYear();
var hdr = {};
2 also this:
var date = new Date();
var d = date.getDate();
var m = date.getMonth();
var y = date.getFullYear();
var hdr = gregorian_to_jalali(y,m,d);
//var hdr = {};
What do I do wrong?
and what this line do: var hdr = {}; ?
let me explain whole of my work, I using a calendar and I want to change it to jalali calendar, this my functions:
$('#calendar').fullCalendar({
header: hdr,
editable: true,
droppable: true, // this allows things to be dropped onto the calendar !!!
drop: function drop(date) {
// this function is called when something is dropped
// retrieve the dropped element's stored Event Object
var originalEventObject = $(this).data('eventObject');
// we need to copy it, so that multiple events don't have a reference to the same object
var copiedEventObject = $.extend({}, originalEventObject);
// assign it the date that was reported
copiedEventObject.start = date;
// render the event on the calendar
// the last `true` argument determines if the event "sticks" (http://arshaw./fullcalendar/docs/event_rendering/renderEvent/)
$('#calendar').fullCalendar('renderEvent', copiedEventObject, true);
// is the "remove after drop" checkbox checked?
if ($('#drop-remove').is(':checked')) {
// if so, remove the element from the "Draggable Events" list
$(this).remove();
}
},
windowResize: function windowResize(event, ui) {
$('#calendar').fullCalendar('render');
}
});
- The information that you have supplied is inplete. Try #2 should have worked and the result of the conversion is stored in variable hdr. Suggestion: there is free code out there that might be of some help. A quick google search returned this site (farhadi.ir/projects/jalalijscalendar). – user2417483 Commented Dec 6, 2017 at 8:49
- do you know what is this {} doing here: var hdr = {}; ? – MSH Developer Commented Dec 6, 2017 at 8:51
- 1 It is creating an empty object - one that will be filled with the return value of gregorian_to_jalali(y,m,d) – user2417483 Commented Dec 6, 2017 at 8:53
-
You should properly format the code, replace all instances of "or" with "||", all instances of "and" with "&&", fix syntax errors like
$g_a[(int)$g_m]and declare all variables with var. Lastly, provide the "tr_num" function. Until then, no help can be provided. Until you fix the gregorian_to_jalali function, the rest is pointless. – RobG Commented Dec 6, 2017 at 9:36
4 Answers
Reset to default 7March 2022 Solution
A simple method to convert Gregorian Dates to Persian (Jalali) Dates is to use Javascript's Intl.DateTimeFormat().
Here is how you can use it to convert today's date to Persian (Jalali) date:
const date = new Date(); // today's date
console.log("In Enlish : ", new Intl.DateTimeFormat('en-u-ca-persian', { dateStyle: 'full' }).format(date));
console.log("In Persian : ", new Intl.DateTimeFormat('fa-u-ca-persian', { dateStyle: 'full' }).format(date));
console.log("In Persian Latin Numbers: ", new Intl.DateTimeFormat('fa-u-ca-persian-nu-latn', { dateStyle: 'full' }).format(date));
console.log("In Arabic : ", new Intl.DateTimeFormat('ar-u-ca-persian', { dateStyle: 'full' }).format(date));simple Way to Convert Gregorian date to Jalali date
function gregorian_to_jalali(gy, gm, gd){
g_d_m = [0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334];
if (gy > 1600) {
jy = 979;
gy -= 1600;
}
else {
jy = 0;
gy -= 621;
}
gy2 = (gm > 2) ? (gy + 1) : gy;
days = (365 * gy) + (parseInt((gy2 + 3) / 4)) - (parseInt((gy2 + 99) / 100)) + (parseInt((gy2 + 399) / 400)) - 80 + gd + g_d_m[gm - 1];
jy += 33 * (parseInt(days / 12053));
days %= 12053;
jy += 4 * (parseInt(days / 1461));
days %= 1461;
if (days > 365) {
jy += parseInt((days - 1) / 365);
days = (days - 1) % 365;
}
jm = (days < 186) ? 1 + parseInt(days / 31) : 7 + parseInt((days - 186) / 30);
jd = 1 + ((days < 186) ? (days % 31) : ((days - 186) % 30));
var resultY = jy.toString();
var resultM = jm < 10 ? "0" + jm.toString() : jm.toString();
var resultD = jd < 10 ? "0" + jd.toString() : jd.toString();
return [resultY, resultM, resultD];
}
Use toLocaleDateString method. Here is the code:
let currentDate = new Date().toLocaleDateString('fa-IR-u-nu-latn',{year:'numeric',month:'2-digit',day:'2-digit'});
// the output is 1402/06/04.
You may input an specific date inside date as follows:
const event = new Date(Date.UTC(2023, 07, 20, 3, 0, 0)).toLocaleDateString('fa-IR-u-nu-latn',{year:'numeric',month:'2-digit',day:'2-digit'});
I used jalali-moment to change calendar system in a calendar.