Code link below. Google Apps Script can be intimidating at first. On of the early functions I needed to use was alerts. This simple and quick coding tutorial walks you through step-by-step how to create alerts using JavaScript and Google Apps Script. Alerts work in Google Sheets, Docs and Forms. 

Check out my other Google Apps Script tutorials: [ Ссылка ]

CODE here: [ Ссылка ]

Feel free to copy / steal / edit / mock the code to your liking.

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