Web front-end engineers are engineers engaged in Web front-end development. Their main job is to develop, optimize, and improve websites; their main responsibilities are to use various professional technologies to develop client products, and then combine them with back-end development technologies Simulate the overall effect, implement a first-class web interface for the products and services provided on the website, optimize the code and maintain good compatibility, and strive to improve the user experience through technology.
The operating environment of this tutorial: Windows 7 system, Dell G3 computer.
What is a web front-end engineer? What is it for?
The full name of web front-end engineer is "Web front-end development engineer", which is an engineer engaged in Web front-end development. Mainly responsible for the development, optimization and improvement of the website.
The main responsibility of the web front-end engineer is to use various professional technologies to develop client products, and then combine the back-end development technology to simulate the overall effect, implement a first-class Web interface for the products and services provided on the website, and optimize the code And maintain good compatibility, committed to improving user experience through technology.
A good web front-end development engineer not only has a certain breadth of front-end knowledge, but the most basic ones are html, css and js. The effect will be better if it is combined with back-end languages, such as: php and mysql database, of course What is more important is the application of knowledge in actual combat, making the UI design drawing into an HTML page, and using the JS scripting language to achieve interaction. Some senior front-end engineers also need to do some optimization work, such as caching and image compression. The focus is to bring a good experience, smaller web page files, and faster download speeds.
Three elements of Web front-end development technology
Web front-end development technology includes three elements: HTML, CSS, JavaScript. With the popularity and popularity of RIA, XML, Flash /Flex, Silverlight and server-side languages are also things that front-end development engineers should master.
With the development of the times, the three elements of front-end development technology have also evolved into what they are today: HTML5, CSS3, and jquery. Web front-end development engineers must communicate not only with upstream interaction designers, visual designers, and product managers, but also with downstream server-side engineers. They need to master many skills. This puts forward requirements for Web front-end development engineers in terms of breadth of knowledge. If you want to be good at front-end development, you may need to master ten lines first. However, all-rounders are rare. Therefore, for less important knowledge, we only need to "pass" it. But to what extent is "tong" enough? For many junior front-end development engineers, this question is very confusing.
Requirements for web front-end engineers
A good web front-end development engineer must have both breadth and depth in the knowledge system, so many large companies Even with high salaries, it is difficult to recruit ideal front-end development engineers. The focus now is not on explaining technology, but more on explaining skills. Technology is not black and white, there are only right and wrong, and skills are a matter of opinion.
In the past, you could create web pages just by knowing Photoshop and Dreamweaver, but now it is no longer enough to just master these. Whether in terms of development difficulty or development methods, current web page production is closer to traditional website back-end development, so it is no longer called web page production, but Web front-end development.
The role of Web front-end development in product development is becoming more and more important, and professional front-end engineers are required to do it well. Professional talents in this area have been favored in the past two years.
Web front-end development is a very special job, covering a wide range of knowledge, including both specific technologies and abstract concepts. Simply put, its main function is to better present the website interface to users.
So an excellent front-end development engineer not only needs to master various technologies necessary for the front-end, but also needs to master other technologies. He needs to master some back-end knowledge and also have a certain understanding of website architecture. , and at the same time, you must master certain SEO website optimization techniques, so that you can be called an "excellent web front-end development engineer." In addition to technology, it also takes a certain amount of time to accumulate yourself. A senior and outstanding web front-end development engineer is a talent that every large enterprise desires. Industry insiders said that companies would rather hire people with high salaries than train relevant technical talents themselves.
How can we do better?
First, you must master basic Web front-end development technologies, including: HTML5, CSS3, JavaScript, DOM, BOM, Ajax, SEO, etc. While mastering these technologies, you must also clearly understand their role in Compatibility, rendering principles and existing bugs on different browsers.
Second, in the knowledge structure of a qualified front-end engineer, basic knowledge of website performance optimization, SEO and server side must also be mastered.
Third, you must learn to use various tools to assist development.
Fourth, in addition to mastering technical knowledge, you must also master theoretical knowledge, including code maintainability, ease of use of components, hierarchical semantic templates and browser hierarchical support, etc. .
It can be seen that if you want to make a seemingly simple web page better and more professional, it is really not simple. This is the characteristic of front-end development, and it is also the reason why many people are confused. Such a complicated knowledge system makes it difficult for novices to start learning, and for veterans, they often don’t know what to learn next.
Code quality is one of the key issues that should be considered in front-end development. For example, there may be countless solutions to implement a website interface, but some solutions will have higher maintenance costs, some solutions will have performance problems, and some solutions are easier to maintain and have better performance. The key influencing factor here is code quality. The three front-end development languages, CSS, HTML, and JavaScript, have different characteristics and have different requirements for code quality, but they are inextricably linked.
(Learning video sharing: web front-end)
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