Web development in my eyes

In my eyes, web development is purely some HTML/XHTML tags, some JavaScript scripts, and a little background operation Code . The lifecycle of a Web request is the client request service. The server outputs the final html/XHTML tag and Javascript script based on the provided parameters, the client then processes the HTML Object Based on the script to display the final behavior to the user.
From the above description, we should be able to clearly understand that the root of web development is the following three parts:
1. html/XHTML tag Compilation
2. Writing JavaScript scripts
3. Compiling background code
From the current web development perspective, no matter what technology we use, the HTML/XHTML labels and JavaScript scripts are basically the same, and the difference is only the background code. Since ASP. net is very popular, and everyone has already accepted the control technology. It brings convenience to everyone, while also making it easier for us to describe the front-end and back-end concepts, because it encapsulates these, we feel that we only need to write the background code, and the front-end display will be handed over to it. However, in my eyes, the use of concise and correct html/XHTML tags and the compilation of well-structured JavaScript scripts are more important than the background code, because the Web changes are often displayed at this layer. We tend to be very skillful in implementing a well-developed hierarchical structure of background code, but few can achieve a perfect front-end structure that supports multiple presentations.
Remove business logic. A classic Web Program All or part of the following features are generally required:
1. Data and performance separation, that is, the so-called skin replacement function.
2. multi-language support
3.