How to use a line break in an alert/prompt dialog in Google Apps Script?

google-chrome google-apps-script google-sheets line-breaks

I went through this same problem. This actually works:

\r\n

google-chrome google-apps-script google-sheets line-breaks

I have implemented this type of messaging inside a Google doc using the following code:

var doc = DocumentApp.openById('your long doc ID');var body = doc.getBody();body.appendParagraph("Line 1");body.appendParagraph("Line 2");

or you could do it in a sheet using:

sheet.appendRow(['line1col1','col2']);sheet.appendRow(['line2col1','col2']);

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