Javascript 

What Is JavaScript?

JavaScript (JS) is a computer programming language used to make websites and applications dynamic and interactive. It's unique because it can run directly in your browser, not just on a server. 

Along with hypertext markup language (HTML) and cascading style sheets (CSS), JavaScript is one of the most commonly used programming languages of the internet. 

Web Development

1. JavaScript is most commonly used to create dynamic, interactive websites.  

2. Developers use JS to add animations, pop-up windows, search bars, buttons, audio and video, chat widgets, and other interactive elements to a webpage. 

3. You can also use JS to provide real-time updates to a page without reloading it. 

4. The front end (user-facing side) of many common websites is built almost entirely on JavaScript, including Google, Facebook, Twitter, and Wikipedia.  

Libraries vs. Frameworks

1. Libraries are collections of prewritten code that can be used to easily implement frequently used JavaScript tasks.

2. Libraries lead to faster development because developers don’t need to write every line of code.

3. Frameworks are collections of libraries. 

4. The library can provide code for a specific function and a framework can provide all the code you need to build the website.

Web-Based Games and Applications

1. JavaScript is used to make most games and applications on the internet. 

2. It runs directly in the browser, JS allows users to play games and run applications without downloading additional software. 

3. Through JavaScript, developers can create anything from simple arcade-style games to robust multiplayer games. 

4. Additionally, interactive applications like image editors, project management tools, chatbots such as ChatGPT, and calculators all use JavaScript.