Web application development is the creation of application programs. A web application (web app) does not need to be downloaded and is instead accessed through a network. An end-user can access a web application through a web browser such as Google Chrome, Safari, or Mozilla Firefox. A majority of web applications can be written in JavaScript, Cascading Style Sheets (CSS), and HTML5.
examples of popular server-side web languages include PHP, Python, Ruby, ASP.NET and… JavaScript!
Javascript — JavaScript can also be used as a server-side language.
JavaScript is a lightweight, interpreted programming language. It’s a client scripting language which uses for web page design.javascript is a high-level object-oriented programming language
Ruby — Ruby is best known for their framework, Ruby on Rails. Ruby is similar to Python and is a good choice for creating Domain-Specific Languages.