web: fix dateTimeLocal() dropping local timezone
closes #2860 Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>
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		| @ -97,6 +97,10 @@ export function dateTimeLocal(date: Date): string { | |||||||
|     // milliseconds, which the input field doesn't like (on chrome, on firefox its fine) |     // milliseconds, which the input field doesn't like (on chrome, on firefox its fine) | ||||||
|     // On chrome, setting .valueAsNumber works, but that causes an error on firefox, so go |     // On chrome, setting .valueAsNumber works, but that causes an error on firefox, so go | ||||||
|     // figure. |     // figure. | ||||||
|     const parts = date.toISOString().split(":"); |     // Additionally, toISOString always returns the date without timezone, which we would like | ||||||
|  |     // to include for better usability | ||||||
|  |     const tzOffset = new Date().getTimezoneOffset() * 60000; //offset in milliseconds | ||||||
|  |     const localISOTime = new Date(date.getTime() - tzOffset).toISOString().slice(0, -1); | ||||||
|  |     const parts = localISOTime.split(":"); | ||||||
|     return `${parts[0]}:${parts[1]}`; |     return `${parts[0]}:${parts[1]}`; | ||||||
| } | } | ||||||
|  | |||||||
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