AdWords scripts display two types of execution logs, both in preview mode and in real executions: Changes log and Logger output.
- Changes log
Changes logs display all changes to AdWords entities performed by the script: entity description, type of change, value before and after, and errors (if any):
Changes logs can be further filtered to only display errors.
- Logger output
Whenever you execute
Logger.log("Hello world!");in a script, "Hello world!" will show in logger output. Logging bits of text is particularly useful during debugging of a script, but is often helpful during live executions too. Suppose the following script is scheduled to run daily:
var spreadsheet = SpreadsheetApp.create("Daily Report"); // Populate the spreadsheet. // ... Logger.log("Daily report ready!"); Logger.log(spreadsheet.getUrl());
Upon every execution, the script will log the URL of the newly created spreadsheet, which will make it all the easier to find later.
In addition to programmer-specified logs, AdWords scripts will use text logs for errors and warnings.