Loading dynamic content

I really apologise if this has been covered previously. I have searched the issues and also read the documentation quite extensively and maybe I am not just understanding it correctly.

I understand you can do run a script in the page builder to load the content however that content/html will be saved once I click save? which means on my front end would load out of date content/html?

Would you be able to point me in the direction to understand this more and have the content always dynamically loaded through an ajax call? I am using laravel and I have the save functionality all working just fine.

Again apologies if this has been covered already.