What's the difference between the front end and the back end of a program?

Front-end development mainly makes the front-end display interface that users can see; Back-end development mainly does logic functions and other modules. In fact, the main differences are embodied in the following two aspects: knowledge structure and realization and job responsibilities.

1, knowledge structure

(1) is displayed in different ways.

The front end refers to the user-visible interface, and the front page of the website is also the page development of the webpage, such as the special effects, layout, pictures, videos, audio and other contents on the webpage. The front-end work content is to design the renderings of art design into web pages that the browser can run, and cooperate with the back-end to do visual work content such as data display and web page interaction.

Back-end refers to what users can't see, usually interacting with front-end engineers, saving and reading website data. Relatively speaking, the back-end involves much more logic codes than the front-end, and the back-end considers the realization of the underlying business logic, the stability and performance of the platform, etc.

(2) Different technologies, skills and tools are used.

Front-end development is to create code behind the user-oriented part of the website mentioned above, and build an immersive user experience by establishing a framework. In order to achieve this goal, development needs to be proficient in the following languages, frameworks and tool libraries:

Back-end developers use these tools to write clean, portable and well-documented code to create or update Web applications. But before writing code, they need to communicate with customers, understand their actual needs and turn them into technical goals, and formulate the most effective and streamlined solutions to achieve these goals.

(3) Different technologies are used.

The technologies used in front-end development include but are not limited to html5, css3, javascript, jquery, Bootstrap, Node.js, Webpack, AngularJs, ReactJs, VueJs and other technologies.

Taking java as an example, the back-end development mainly uses technologies including but not limited to Struts Spring MVC Hibernate HTTP protocol Servlet Tomcat server.

2. Job responsibilities

The main responsibilities of front-end engineers are divided into three parts, namely, traditional Web front-end development, mobile development and big data display development. Web front-end development is mainly aimed at PC-side development tasks;

Mobile development includes Android development, iOS development and various small programs development. Driven by the rapid development of mobile Internet, the development task of mobile terminals is relatively large. With the implementation of the 5G standard, the development task of mobile terminals will be further expanded. The presentation of big data is mainly based on the existing platform to complete the presentation of the final analysis results, and there are usually many options for presentation, such as large-screen display.

The main responsibilities of back-end engineers are also concentrated in three parts, namely platform design, interface design and function realization. Platform design is mainly to build back-end support service containers; Interface design mainly aims at designing corresponding functional interfaces for different industries. Usually, there is no windows sockets platform, just as the satellite navigation platform has two sets of interfaces, civilian and military. Function realization is to realize specific business logic.