Google Apps 脚本 formatDate 使用用户的时区而不是 GMT

2022-01-16 00:00:00 time google-apps-script timezone timezone-offset javascript

我有一行在单元格中设置当前日期和时间:

I have a line that sets the current date and time in a cell: 

sheet.getRange(1,1).setValue(new Date());

然后我有一行可以根据该单元格的值创建格式化日期:

Then I have a line that creates a formatted date based on that cell's value:

var addedDate = sheet.getRange(1,1).getValue();
var addedTime = Utilities.formatDate(addedDate, "GMT", "hh:mm a");

生成的 addedTime 似乎在 GMT 时区，我需要它在用户的时区.它通常是美国东部时间 (-0500)，但如果我只是从时间中减去 5 小时，那么这并没有考虑夏令时 (-0400).

The resulting addedTime seems to be in the GMT time zone and I need it to be in the user's time zone. It will usually be US Eastern Time (-0500), but if I simply subtract 5 hours from the time then that doesn't account for daylight saving time (-0400).

我在这里查看了 formatDate 的文档:https://developers.google.com/apps-script/reference/utilities/utilities#formatDate(Date,String,String)

I checked the documentation for formatDate here: https://developers.google.com/apps-script/reference/utilities/utilities#formatDate(Date,String,String)

此处链接到官方 Java SimpleDateFormat 类文档:http://docs.oracle.com/javase/6/docs/api/java/text/SimpleDateFormat.html

which links to the official Java SimpleDateFormat class documentation here: http://docs.oracle.com/javase/6/docs/api/java/text/SimpleDateFormat.html

...但我无法找到有效时区列表来替换 GMT.

... but I can't find a list of valid time zones there to replace the GMT with.

推荐答案

可以这样直接获取电子表格时区:

You can directly get the spreadsheet Time Zone like this :

  var addedDate = sheet.getRange(1,1).getValue();
  var addedTime = Utilities.formatDate(addedDate, SpreadsheetApp.getActive().getSpreadsheetTimeZone(), "hh:mm a");

在此处查看文档

但如果您想自己选择，Google Apps 脚本会使用这些格式:

but Google Apps Script uses these formats if you want to choose it yourself :

http://joda-time.sourceforge.net/timezones.html

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