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Enum TriggerSource | Apps Script | Google for Developers

An enumeration denoting the source of the event that causes the trigger to fire.

To call an enum, you call its parent class, name, and property. For example, ScriptApp.TriggerSource.SPREADSHEETS.

Property	Type	Description
`SPREADSHEETS`	`Enum`	Google Sheets causes the trigger to fire.
`CLOCK`	`Enum`	A time-driven event causes the trigger to fire.
`FORMS`	`Enum`	Google Forms causes the trigger to fire.
`DOCUMENTS`	`Enum`	Google Docs causes the trigger to fire.
`CALENDAR`	`Enum`	Google Calendar causes the trigger to fire.

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Last updated 2026-04-13 UTC.