Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
Ok, I know how to check if a certain day is inside the DST-frame. But is there any way to get the information if the system providing the Date-object already IS in DST-mode and you dont know the ‘normal’ time-zone? A user might turn of that feature or still has to reboot or something like that. Most systems provide some kind of flag in the SysAPI to check that… is there any way to get that info from js?
Probably not.
The JavaScript language (ECMAScript 5th Edition) doesn’t provide any such functionality.
You might be able to access it from an extension such as an ActiveXObject but I doubt that there is any reliable, cross-browser/cross-platform way to detect if the OS or user is using any daylight savings time settings.
This Microsoft Technet article demonstrates how you could detect DST on a few versions of Windows using VBScript (which is likely analogous in JScript) but, again, this isn’t likely something you could do reliably (if at all, depending on the specifics of your use case).