Fetch Data from SQL in HTML

I was try to develop an mobile app in Apache Cordova which is in html and javascript language. I've used this guide (https://docs.microsoft.com/en-us/azure/sql-database/sql-database-connect-query-nodejs) which is node.js to connect to the database but for this guide it uses console.log. When i try to use alert command to call out the data, no result was produced. Please advice on what command should i use for this case.

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