What do you need to know about web front-end development?
Front-end development requires mastering various aspects of knowledge, including web page structure and style design (HTML/CSS), JavaScript language, front-end frameworks and libraries, mobile development technology, browser compatibility, performance optimization, and debugging tools , version control, SEO optimization and user experience design. Master these skills to design and develop web pages and applications that are powerful, beautiful, and easy to use.
The knowledge required for the web front-end is:
HTML/CSS: Master the web page structure and style design, understand The latest technologies and features of HTML5 and CSS3.
JavaScript: Proficient in JavaScript language, including DOM operations, event processing, AJAX and other technologies.
Front-end frameworks and libraries: Master common front-end frameworks and libraries, such as React, Angular, Vue, etc., and understand their usage and principles.
Mobile development: Understand mobile development technologies, such as responsive design, mobile layout and adaptation, etc.
Browser compatibility: Understand the compatibility issues of different browsers and be able to write code that is compatible with various browsers.
Performance optimization: Master the methods and techniques of front-end performance optimization, including reducing HTTP requests, cache optimization, code compression, etc.
Debugging tools: Proficient in using developer tools and debugging tools to quickly locate and solve problems.
Version Control: Master the use of Git and other version control tools, and be able to collaborate on team development.
SEO Optimization: Understand the principles and methods of SEO optimization, and be able to write web page code that complies with SEO specifications.
User Experience Design: Understand the basic principles of user experience design and be able to design user-friendly interfaces and interactions.
The above is the detailed content of What do you need to know about web front-end development?. For more information, please follow other related articles on the PHP Chinese website!

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Web front-end frameworks include: 1. Angular, a front-end framework for creating a single application interface; 2. React, a JavaScript development framework for building user interfaces; 3. Vue, a progressive framework for building user interfaces JavaScript framework; 4. Bootstartp, a front-end framework based on HTML, CSS, and JavaScript; 5. QUICK UI, a set of enterprise-level web front-end development solutions; 6. SUI, a front-end component library.

A web front-end engineer is an engineer who is engaged in Web front-end development. His main job is to develop, optimize, and improve the website. His main responsibility is to use various professional technologies to develop client products, and then combine the back-end development technology to simulate the overall effect and provide the website with The products and services provided on realize first-class web interfaces, optimize code and maintain good compatibility, and are committed to improving user experience through technology.
![[Hematemesis Compilation] The latest front-end interview questions and answers in 2023 (Collection)](https://img.php.cn/upload/article/000/000/024/62bbc4b816943531.jpg?x-oss-process=image/resize,m_fill,h_207,w_330)
This article summarizes some selected Web front-end interview questions worth collecting (with answers). It has certain reference value. Friends in need can refer to it. I hope it will be helpful to everyone.

This article summarizes some selected Web front-end interview questions worth collecting (with answers). It has certain reference value. Friends in need can refer to it. I hope it will be helpful to everyone.

I have summarized some web front-end interview (written test) questions to share with you. This article will first share with you the HTML part of the written test questions (with answers). You can do it yourself and see how many you can answer correctly!

Differences: 1. The front-end refers to the interface visible to the user, while the back-end refers to things invisible to the user. It considers the implementation of the underlying business logic, the stability and performance of the platform, etc. 2. The technologies used in front-end development include html5, css3, js, jquery, Bootstrap, Node.js, Vue, etc.; while the back-end development uses server technologies such as java, php, and HTTP protocol. 3. From the perspective of application scope, front-end development is not only well-known by ordinary people, but its application scenarios are much wider than that of back-end.

This article will help you quickly distinguish between H5, WEB front-end, large front-end, and WEB full stack. I hope it will be helpful to friends in need!

The default ports of the web standard are: 1. HTTP, the default port number is 80; 2. HTTPS, the default port number is 443; 3. FTP, the default port number is 21; 4. SSH, the default port number is 22; 5. Telnet , the default port number is 23; 6. SMTP, the default port number is 25; 7. POP3, the default port number is 110; 8. IMAP, the default port number is 143; 9. DNS, the default port number is 53; 10. RDP , the default port number is 3389 and so on.