See the below link:

https://stackoverflow.com/questions/23359372/connect-html-page-with-sql-server-using-javascript

https://stackoverflow.com/questions/857670/how-to-connect-to-sql-server-database-from-javascript-in-the-browser

https://www.codeproject.com/Questions/294959/How-to-connect-to-SQL-server-database-from-javascr

https://www.froglogic.com/blog/accessing-sql-database-javascript-test/

The client-side JavaScript cannot access MySQL without some kind of bridge.

node.js can be used. See https://github.com/sidorares/node-mysql2

Hope that helps you.

You might want to try this:

https://github.com/kripken/sql.js

sqlite is a single file database so you don't need database server back-end.

The below link is represent connect and get the data from db..

see that link...you will get some answer

https://www.c-sharpcorner.com/UploadFile/5089e0/database-connectivity-in-javascript/

Write your database connection string under script Tag of HTML.

i creat my backend by php and i creat than my front byt vue js so i my front don't show me any data from my data base and i am sure about my code ... what can i do ? ...PS: I WORK WITH WINDOWS 10 !