How to change the content of a webpage dynamically

Question

for example in facebook when i logij with my account my profile pic my name etc are displayed.
is there any language used separately other than javascript and php
i know that php is used to retrieve data from data base
and java script is used to change the content dynamically
how php and javascript work together to change the content based on the login credentials...

Thanks in advance ☺

Answer 1

Ajax!
It stands for asynchronous Javascript and XML. It can retrieve content from database without refreshing the page.
It is one of the reason jquery is great as it make ajax requests much easier!

Answer 2

Here a simple example how Javascript change PHP page data

https://code.sololearn.com/w8vygVE7LK2Q/?ref=app

Answer 3

thank you dude