What is the difference between front-end and back-end

Difference: The front-end mainly focuses on the user interface and user interaction, while the back-end is responsible for processing data and business logic. The two work together to build a complete web application.

Front-end and back-end play different roles in web development. The main differences are as follows:

1. Function:

   • Front-end: Responsible for user interface and user experience, including the design, layout, interaction and style of web pages.
   • Backend: Handles the logic and data operations of the application, including database management, server-side programming and business logic.

2. Language and technology:

   • Front-end: Mainly using technologies such as HTML, CSS and JavaScript, as well as front-end frameworks and libraries such as React, Angular, Vue et al.
   • Backend: Various programming languages ​​and frameworks can be used, such as Java (Spring Boot), Python (Django/Flask), JavaScript (Node.js), etc.

3. Data processing:

   • Front-end: mainly handles the display of the user interface and the interaction of user input, and usually does not directly operate the database.
   • Backend: Responsible for storing, reading and processing data, interacting with the database, and returning processing results to the frontend.

4. Security:

   • Front-end: Mainly focus on user-side security, such as preventing XSS (cross-site scripting attacks), CSRF (cross-site request forgery), etc.
   • Backend: Responsible for handling application security, including data verification, user rights management, etc.

5. Running environment:

   • Front-end: The code is executed in the user's browser, mainly running on the client.
   • Backend: The code is executed on the server side, usually deployed and run on the server.

Generally speaking, the front-end mainly focuses on the user interface and user interaction, while the back-end is responsible for processing data and business logic. The two work together to build a complete web application.

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