toISOString() changes datetime value

Question

I have array of the objects.Each object in array has date property.I try to get biggest(the last) date from array.

Here is array:

var sensorsData = [         


        

Answer 1

When you create a date with new Date(str) it creates a date object with a time zone. toISOString() makes it zero UTC offset, as denoted by the suffix "Z".

Here is a workaround:

var date = new Date(e.MeasureDate)
return new Date(date.getTime() - date.getTimezoneOffset() * 60000)

Updated fiddler: https://jsfiddle.net/xf5jmLL6/7

getTimezoneOffset returns number of minutes and new Date expects number of milliseconds since January 1 1970 00:00:00 UTC, so multiplying by 60000 provides needed adjustment.