What is web front-end and web page

Web front-end is the web page displayed to users, that is, the front-end part of the website. It is about the visual aspect of the website that users can see and experience, that is, everything the user sees and displayed by the web browser. Touch everything that users can see, touch and experience. A web page is a plain text file containing HTML tags. It can be stored on a computer in a corner of the world. It is a page in the World Wide Web and is in Hypertext Markup Language format. Web pages usually use image files to provide pictures. Web pages To be read via a web browser.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

What is the web front-end

The web front-end is the web page displayed to the user, that is, the front-end part of the website.

The web front-end, also known as the "client", is about the visual aspects of the website that users can see and experience, that is, everything the user sees and what the web browser displays, involving what the user can see , everything you touch and experience; that is, the web front-end includes the structure of the web page, the visual appearance of the web, and the implementation of interaction at the web level.

The web front-end evolved from web page production, and its name has obvious characteristics of the times. In the evolution of the Internet, web page production is a product of the Web 1.0 era. The main content of early websites was static, mainly pictures and text, and users' behavior when using the website was mainly browsing. With the development of Internet technology and the application of HTML5 and CSS3, modern web pages are more beautiful, have significant interactive effects, and are more powerful.

The web front-end is mainly aimed at coding and building visible things, that is, the interface for users to interact with, concentrated in a web application or website. It also includes the development of mobile applications and the people responsible for creating the layout or architecture of these types of applications are front-end developers.

The web is the Global Wide Area Network, also known as the World Wide Web. It is a global, dynamically interactive, cross-platform distributed graphical information system based on hypertext and HTTP. It is a network service built on the Internet. It provides a graphical, easy-to-access and intuitive interface for viewers to find and browse information on the Internet. The documents and hyperlinks organize the information nodes on the Internet into an interconnected system. network structure.

The challenge with front-end web programming is that the tools and technologies used to implement front-end pages change rapidly, so engineers need to constantly pay attention to how the industry is developing (such as ECMAScript 6).

The purpose of designing web pages is to ensure that when users open the site, the information is presented in an easy-to-read and relevant form. The problem that comes with this is that users now use a large number of devices to access the web, and these devices have different screen sizes and resolutions.

So designers need to pay attention to these aspects when designing web pages. They need to ensure that their web pages display correctly in different browsers, different operating systems, and different devices, which requires careful planning on the engineer's end.

Technologies required for web front-end development:

• Proficient in front-end development technology (HTML5, JS, JSON, XHTML, CSS3), understand Relevant standards for various technologies

• Master Ajax asynchronous programming and be able to write high-performance, reusable front-end components;

• For OO , MVC, MVVM and other programming ideas, have a deep understanding of front-end frameworks, and be proficient in a front-end framework (common front-end frameworks Vuejs, AngularJS, React, Bootstrap, QUICK UI, mobile terminals include: Frozen UI, weUI, SUI, MUI, AUI), Understand its principles (there are many frameworks, choose two or three mainstream frameworks, be proficient and have an in-depth understanding);

• is good at Web performance optimization, accessibility, and has a good understanding of SEO experience; understand the concept of separation of presentation layer and data layer, and Web semantics (these are also very useful bonus points when looking for a job);

• Understand the front-end security mechanism and be familiar with it HTTP protocol and browser caching strategy;

• Familiar with common JS development framework source code implementation, (such as: prototype, jQuery, Mootools, Ext, Dojo, underscore, YUI, Kissy), at least proficient A sort of.

• Have a clear understanding of common browser compatibility issues and have reliable solutions; such as IE6/7/8/9, Firefox, Safari, Chrome;

• Have high aesthetics

In addition, there is continuous learning

What is a webpage

A webpage is the basic element that constitutes a website and is a platform that hosts various website applications. In layman's terms, your website is composed of web pages. If you only have a domain name and a virtual host without making any web pages, your customers will still not be able to access your website.

A webpage is a plain text file containing HTML tags. It can be stored on a computer in a corner of the world. It is a "page" in the World Wide Web and is a hypertext markup language format (standard universal An application of markup language, with the file extension .html or .htm). Web pages usually use image files to provide images. Web pages are to be read through a web browser.

Webpage composition

Text and pictures are the two most basic elements that make up a webpage. You can simply understand it as: text is the content of the web page. Pictures are the beauty of a web page. In addition, elements of web pages also include animation, music, programs, etc.

Right-click the mouse on the web page and select "View Source File" in the menu to see the actual content of the web page through Notepad. You can see that the web page is actually just a plain text file. It uses various tags to describe text, pictures, tables, sounds and other elements on the page (such as fonts, colors, sizes), and the browser interprets these tags and generates the page, so you get what you have now the picture seen. Why can't I see any pictures in the source file? What is stored in the web page file is only the link location of the image, while the image file and the web page file are stored independently of each other, and may not even be on the same computer.

Web pages usually have the following elements:

Text data image files Applet (subprogram executed within the page) The composite of hyperlinked web pages is a website, and the starting point of a website is the home page.

(Learning video sharing: Getting started with web front-end)

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