What does the web front end do?

With the popularity of the Internet, Web front-end technology has received more and more attention. Web front-end technology refers to the technology of using a series of technologies and tools (HTML, CSS, JavaScript, etc.) to make websites or applications, and also includes user experience and interface design.

The tasks that need to be completed in Web front-end development are very rich, which can be simply summarized into three aspects: design, programming and optimization.

First of all, Web front-end development requires mastering the basic knowledge of interface design. Designers are usually responsible for visual design and user experience. And front-end developers need to be able to translate the visual designs provided by designers into web applications. As a web front-end developer, the necessary skill areas for designers include the following:

1. Be aware of the importance of data and determine the information architecture: Understand users, user goals, and content. The next step is to determine the different levels of classification system for the website.
2. Understand the role of various technologies in working with designers on websites: for example, HTML5, CSS3, JavaScript, etc.
3. Determine what users want and what functions they need: Determine what users want and what functions they need, and provide users with flexible synchronous and asynchronous functions.

Secondly, Web front-end developers need to master programming techniques and tools. Front-end developers need to master popular programming languages ​​​​and tools, such as HTML, CSS, JavaScript and some development frameworks and libraries.

1. HTML: It is Hypertext Markup Language, which establishes the basic framework of a web page.
2. CSS: Cascading Style Sheets, a language for defining web page styles, such as text, images, colors, etc.
3. JavaScript: It is a scripting language that can achieve dynamic web page effects with less code and a wide range of uses.
4. jQuery: It is a popular JavaScript library that makes writing code easier.

Before writing front-end code, you also need to master some tools, such as text editor (Sublime Text), version control tool (Git) and automated build tools (Gulp, Grunt, etc.).

Finally, web front-end developers need to optimize user experience and web page performance. Web front-end developers not only need to write the code for web pages, but also need to ensure that users can use the website easily. This involves the usability and responsiveness of the website. Developers need to know some basics of interaction design, such as user research, card sorting, and software prototyping.

In addition, front-end developers also need to understand page performance. This includes packaging and minifying JavaScript and CSS, minimizing HTTP requests, and compressing images. Developers also need to use browser debugging tools to test and optimize the website.

To sum up, the tasks of Web front-end technology include design, programming and optimization. Web front-end developers need to master a variety of skills and tools to be able to develop high-quality websites and applications.

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