moment-jalali validate on specific date

Question

var x = moment("13900229","YYYYMMDD",'fa').format("YYYY/MM/DD");

or

var x = moment("13900229").format("YYYY/MM/DD");

output : Invalid Date

but:

var x = moment("13900228","YYYYMMDD",'fa').format("YYYY/MM/DD");

or

var x = moment("13900228").format("YYYY/MM/DD");

Output:1390/02/03

Answer 1

you can use this code :

moment(date, 'jYYYYjMMjDD').format("jYYYY/jMM/jDD").toString();

the problem is solved