
Tyler B. answered 07/31/19
3 years using jQuery
Hi there!
What you can do is setup your back-end(server side) framework to handle incoming requests for data from your database and instead of returning html, you would return JSON. With the back end set up like this, then you can have the front-end (Angular or React) make API calls to your back-end. Once the JSON data is returned from the back-end, then the front-end can present the data in HTML which ever way you decide.
That is how they would work together without interfering with each other and without a lot of duplication. Its a good way to separate concerns of your application as well. The back-end deals with retrieving and modifying the data as a result of the API calls it receives. And the front-end presents the data it gets from the back-end. It can also send data to the back-end to be stored.
I hope this helps.
Tyler B.
ps. I would lookup Building an API with Laravel and API requests in Angular