JavaScript is a client-side scripting language, which means the source code is processed by the client’s web browser rather than on the web server. This means JavaScript functions can run after a webpage has loaded without communicating with the server. JS file, which may also be viewed in a browser.

These two terms are used in the context of web. Client-side means that the JavaScript code is run on the client machine, which is the browser. Server-side JavaScript means that the code is run on the server which is serving web pages.

Client side : JavaScript is a client-side language, which means it gets executed at the client side (i.e, user side). On contrary, PHP is a server-side scripting language, as it gets executed at server.

Here are some basic things JavaScript is used for:

• Adding interactive behavior to web pages. JavaScript allows users to interact with web pages.
• Creating web and mobile apps.
• Building web servers and developing server applications.
• Game development.

It is possible to run embed Python within a HTML document that can be executed at run time.

The language of Python is extremely powerful and very advanced for web design and development. Developers with this skill are in great demand, but it is difficult to find a high-quality web development company that uses Python for web development.

Fast development. Python is not just one of the most rapidly developing coding languages, but also one that allows for quick prototyping and iterations. This makes the work easier and far more productive for developers.

Python can be used to build server-side web applications. However, most Python developers write their web applications using a combination of Python and JavaScript. Python is executed on the server side while JavaScript is downloaded to the client and run by the web browser.