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how do I format a javascript date like ISO format, but in local time?
with myDate.toISOString() I am getting the time as: "2012-09-13T19:12:23.826Z"
but here, it is 22:13, so how do I include the timezone in above format?
I ended up doing...
pad=function(e,t,n){n=n||"0",t=t||2;while((""+e).length<t)e=n+e;return e} c = new Date() c.getFullYear()+"-"+pad(c.getMonth()+1)+"-"+pad(c.getDate()-5)+"T"+c.toLocaleTimeString().replace(/\D/g,':')+"."+pad(c.getMilliseconds(),3) 
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Use the Date() constructor to convert an ISO string to a date object, e.g. new Date('2023-07-21T09:35:31.820Z') . The Date() constructor will easily parse the ISO 8601 string and will return a Date object. Copied!
The toISOString() method returns a string in simplified extended ISO format (ISO 8601), which is always 24 or 27 characters long ( YYYY-MM-DDTHH:mm:ss.sssZ or ±YYYYYY-MM-DDTHH:mm:ss.sssZ , respectively). The timezone is always zero UTC offset, as denoted by the suffix Z .
They're for different purposes. UTC is the primary time standard by which the world regulates clocks and time. ISO is standard format time.
The JavaScript Date is always stored as UTC, and most of the native methods automatically localize the result.
No library required! For some Date object, e.g. t = new Date()
convert the local time zone offset from minutes to milliseconds
z = t.getTimezoneOffset() * 60 * 1000
subtract the offset from t
tLocal = t-z
create shifted Date object
tLocal = new Date(tLocal)
convert to ISO format string
iso = tLocal.toISOString()
drop the milliseconds and zone
iso = iso.slice(0, 19)
replace the ugly 'T' with a space
iso = iso.replace('T', ' ')
Result is a nice ISO-ish format date-time string like "2018-08-01 22:45:50" in the local time zone.
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