1445988 - Note for IE and Edge including control characters in Intl.DateTimeFormat.format

Status: RESOLVED FIXED

(Developer Documentation Graveyard :: JavaScript, enhancement, P2)

Description

[Paul]

:: Developer Documentation Request

      Request Type: New Documentation
     Gecko Version: unspecified
 Technical Contact: 

:: Details

In attempting to resolve an issue in Edge with Intl.DateTimeFormat.format(), I discovered that it was including invisible control characters in the return string.

Searching the issue, I came across this Stack Overflow thread from 2014 (so, involving IE and not Edge) that deals with the same issue: https://stackoverflow.com/questions/25574963/ies-tolocalestring-has-strange-characters-in-results

The accepted answer is that this behaviour is not to be unexpected (and I infer not actually a bug).

Could the DateTimeFormat and/or DateTimeFormat.format pages be amended to include a caution about this potential pitfall?

Comment 1

[Florian Scholz (Open Web Docs)]

I've added info about this situation to these two pages:

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/toLocaleString#Avoid_comparing_formatted_date_values_to_static_values

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DateTimeFormat/format#Avoid_comparing_formatted_date_values_to_static_values

review? Chris?

Comment 2

[Chris Mills [:cmills]]

review? Chris?

Reads really well; nice work! I gave it a couple of tweaks, but nothing major.

Comment 3

[Florian Scholz (Open Web Docs)]

Thank you!