Which programming language is best for developing websites?

You can try any of the following.
1. Python is the simplest and easiest programming language. You can learn it quickly. Once you practice, this language you can programme a good e-commerce website.
2. HTML is having many web development tools for any type of programming tool than many other web programming languages. HTML can be used to format any element of a web page.
3. Php is an easy to learn language for web development. Coding of this language is different. It may take some time to get acquainted with the same.
4. JavaScript is a programming language that works with HTML and CSS. This language should be learned to become a front-end developer.
5. Ruby on Rails is one of the best programming languages to develop an e-commerce website. The website developed with this will have a lot of customisation. These websites will attract many people.
6. MEAN is another language which can be used. Many top organisations like Google, Netflix and Uber are using this language.

There are many programming languages used for web development. The most common is Javascript.

The other important and widely used are PHP, Java, Python, Ruby, Perl, C++ and SQL. A brief about these is as below -

(1) Javascript - It is quite versatile and is used for managing the browser, editing contents in a document, scripts communication with users, asynchronous communication, animations on the web pages, loading of new images, addressing scripts or objects on a web page and making receptive user interfaces.

(2) PHP - It is also a widely used one and is an HTML embedded scripting language. It quickly produces dynamic pages. PHP is useful in expanding a web app very swiftly and easily. PHP code is directly fixed into an HTML source rather than residing in an external file. Some big sites like WordPress, Digg and Facebook use PHP in their architecture.

(3) Java - It is said to be the top most programming language in the industry. It is a class-based, OOPs language and is planned to function across various software platforms including OS X as well as Windows.

(4) Python - It is an advanced language and ideal for websites and mobile applications. It encompasses many programming paradigms such as OOPs, structured programming and functional programming. Many web developers are using this language due to its flexibility and the broad range of application. Python can run on LINUX as well as Windows based servers.

(5) Ruby - Ruby is a simple user-friendly language for beginners but it is a powerful and object-oriented scripting for developing the websites. It is used for the programming of mobile apps and websites both.

(6) Perl - Perl presents unique tools for system programming. It is a well acknowledged programming language in the web development field. This language is an interpreted script language and can be easily compilable into a dual executable byte code.

(7) C++ - It is capable of low-level memory manipulation and has object-oriented programming facets. It was in fact designed to boost the C language but simultaneously it was used for web development. C++ is used in software like Firefox, Winamp, Windows and Adobe.

(8) SQL - It is a Structured Query Language and is used for web development. Its main use is for query purposes which is done through informational databases.

Basically there is a difference between Website and Web Application.
Website could be static or dynamic. Static website can be developed using plan HTML and JavaScript. Dynamic website generate dynamic contents based on data stored in the back end Database and business logic written using various languages or framework like Angular, React, Java or. Net Rest APIs.

Web Application are much bigger then website and might have integration with other applications as well.