Web Application

Web Applications are dynamic web sites working with server side programming which provide functionalities such as interacting with users, connecting to back-end databases, and generating results to browsers.
We are scripting/coding and programming Web Applications on Client Side via
. HTML (HyperText Markup Language)
. CSS (Cascading Style Sheets)
. JavaScript
. Ajax (Asynchronous JavaScript and XML)
. jQuery (JavaScript Framework Library – commonly used in Ajax development)
. Angular JS (JavaScript Framework Library)

AND
Server Side Scripting / Coding via
. PHP (very common Server Side Scripting language – Linux / Unix based Open Source – free redistribution, usually combines with MySQL database)
. Node JS