A website is a collection of web pages that are produced on the Internet according to certain rules and using HTML (Standard General Markup Language) and other tools to display specific content. People can access and search files through browser, and upload and download website files through FTP.
A website is a collection of web pages that are produced on the Internet according to certain rules and using HTML (Standard General Markup Language) and other tools to display specific content. In short, the website is a kind of communication tool. People can publish the information they want to publish through the website, or use the website to provide relevant network services. People can visit the website through the web browser, get the information they need or enjoy the network services.
A website is a host with domain name or address on the Internet and provides certain network services. It is a space for storing files and takes server as carrier. People can access and search files through browser, and upload and download website files through FTP.
Composition of the website
In the early days, domain name, spatial server and program are the basic components of the website. With the continuous progress of science and technology, the composition of website is becoming more and more complex. Most websites are composed of domain name, spatial server, DNS domain name resolution, website program, database, etc.
域名（Domain Name），是由一串用点分隔的字母组成的 Internet 上某一台计算机或计算机组的名称。用于在数据传输时标识计算机的电子方位（有时也指地理位置），域名
Domain name is the name of a computer or computer group on the Internet composed of a string of letters separated by dots. Used to identify the electronic location (sometimes geographic location) of a computer during data transmission
已经成为互联网的品牌、网上商标保护必备的产品之一。通俗的说，域名就相当于一个家庭的门牌号码，别人通过这个号码可以很容易的找到你。以一个常见的域名为例说明，baidu 网址是由二部分组成，标号“baidu”是这个域名的主域名体，而最后的标号“com”则是该域名的后缀，代表的这是一个 com 国际域名，是顶级域名。而前面的 http://www.是网络名， 为 www 的域名。
It has become one of the necessary products for Internet brand and trademark protection. Generally speaking, the domain name is equivalent to the house number of a family. Others can easily find you through this number. Take a common domain name as an example to illustrate that Baidu website is composed of two parts. The label “Baidu” is the main domain name body of this domain name, and the final label “com” is the suffix of the domain name, which represents a com international domain name and a top-level domain name. The former www. is the network name, which is the domain name of www.
DNS 规定，域名中的标号都由英文字母和数字组成。每一个标号不超过 63 个字符，也不区分大小写字母。标号中除连字符（-）外不能使用其他的标点符号。级别最低的域名写在最左边，而级别最高的域名写在最右边。
DNS stipulates that the label in the domain name is composed of English letters and numbers. Each label does not exceed 63 characters and is not case sensitive. No punctuation except hyphen (-) can be used in the label. The domain name with the lowest level is written on the left, while the domain name with the highest level is written on the right.
Common website space: virtual host, virtual space, independent server, virtual host, VPS.
虚拟主机是在网络服务器上划分出一定的磁盘空间供用户放置站点、应用组件等；提供必要的站点功能、数据存放和传输功能。所谓虚拟主机，也叫“网站空间”，就是把一台运行在互联网上的服务器划分成多个“虚拟”的服务器。每一个虚拟主机都具有独立的域名和完整的 Internet 服务器（支持 WWW、FTP、E-mail 等）功能。虚拟主机是网络发展的福音，极大的促进了网络技术的应用和普及。同时虚拟主机的租用服务也成了网络时代新的经济形式。虚拟主机的租用类似于房屋租用。
The virtual host divides a certain amount of disk space on the network server for users to place sites and application components, and provides necessary site functions, data storage and transmission functions. The so-called virtual host, also known as “website space”, is to divide a server running on the Internet into multiple “virtual” servers. Each virtual host has its own domain name and complete Internet server (supporting WWW, FTP, e-mail, etc.). Virtual host is the gospel of network development, which greatly promotes the application and popularization of network technology. At the same time, the rental service of virtual host has become a new economic form in the network era. Renting a virtual host is similar to renting a house.
VPS 即指虚拟专用服务器，是将一个服务器分区成多个虚拟独立专享服务器的技术。每个使用 VPS 技术的虚拟独立服务器拥有各自独立的公网 IP 地址、操作系统、硬盘空间、内存空间、CPU 资源等，还可以进行安装程序、重启服务器等操作，与运行一台独立服务器完全相同。
VPS refers to the virtual private server, which is the technology of dividing a server into several virtual independent exclusive servers. Each virtual independent server using VPS technology has its own independent public IP address, operating system, hard disk space, memory space, CPU resources, etc., and can also install programs and restart the server, which is exactly the same as running an independent server.
program source code
Program is the programming language used to build and modify the website, and source code is a pile of words and symbols written in a certain format.
“For example, right-click the mouse on this page, select view source file, and a notepad will come out. The content in it is the source code of this page.” This sentence reflects their relationship, here the source file refers to the source code of the web page, and the source code is the content of the source file, so it can also be called the source code of the web page.
Source code refers to the original code, which can be any language code.
汇编码是指源代码编译后的代码，通常为二进制文件，比如 DLL、EXE、.NET 中间代码、JAVA 中间代码等。
Assembly code refers to the source code compiled code, usually binary files, such as DLL, EXE,. Net intermediate code, Java intermediate code, etc.
高级语言通常指 C/C++ 、 BASIC、C# 、JAVA、PASCAL 等等 汇编语言就是 ASM，只有这个，比这个更低级的就是机器语言了。
High level languages usually refer to C / C + +, basic, C ා, Java, Pascal and other assembly languages, which are ASM. Only this one is the machine language lower than this.
The browser is like the compiler of a program. It will help us translate the source code into what we see.
The main difference between e-commerce website and general website is its function, which focuses on solving the electronic business activities. E-commerce website is an important way for enterprises to release business information, realize business management and online transaction, is the “window” of e-commerce system, and also the undertaker and performer of e-commerce system operation. With a website, enterprises can display their products and services, publicize their corporate image, promote the development of business, strengthen the communication with customers and consumers, and realize the online or offline profit.
Different websites have different characteristics. A good website often has the following characteristics:
(1) Personalization of website
Personality is not vulgar, the personality of the website is atmospheric, beautiful and reasonable layout on the interface, which can reflect the enterprise values, show the corporate culture, and fully interpret the enterprise grade; in terms of technology, it conforms to the website construction standards and the enterprise product marketing concept.
(2) Interactivity of websites
No matter from the marketing point of view or display point of view, the website is inseparable from the interactive function of the website. The website without interactive function or interactive function can only be called dead website or webpage. In terms of technology, interactivity is mainly reflected in the system modules of website forum, message board, business negotiation, etc.
(3) Usability of website
The website needs to be magnificent and beautiful, but the website can’t be flashy, especially for group enterprises. The websites of the top 500 enterprises have made great efforts to make them practical. The layout of the common things, important things show in the prominent position of the website, whether in the background management of the website or the website front page browsing is at a glance. In a word, it is “simple but not monotonous, substantial but not complicated”.
(4) Technical nature of website
The good of the website is not limited to its beautiful appearance. The stability, browsing speed and compatibility of websites are also important parts of website visualization. Three or five days after the website is completed, hackers attack, slow access, add and modify things are very troublesome, these are the problems of many websites.
(5) Extensibility of website
从计算机仅限于美国国防部到微型计算机家庭普及，从阿里巴巴开启中国的第一个网站到网站普及，时代发展很快，互联网的发展更快，再说互联网的发展也就是网站的发展，随着网站建设的更新换代，一个 1995 年做的网站不可能一直用到 2011 年，随着技术的发展，人们审美观点的变化，网站也得不断改进，这种改进取决于网站扩展性的大小，比如，扩展性大的网站即使在 2012 年制作，到 2020 年还可使用，但有些扩展性不好，升级不方便的网站，与其重新做网站耗时又耗财，还不如一次做到位。
From computers limited to the U.S. Department of defense to the popularity of microcomputers at home, from Alibaba’s opening of China’s first website to the popularity of websites, the times have developed rapidly, and the development of the Internet is also the development of websites. With the upgrading of website construction, a website made in 1995 can not be used all the time in 2011 In, with the development of technology and the change of people’s aesthetic views, the website has to be improved constantly. This improvement depends on the size of the website’s expansibility. For example, even if the website with large expansibility is produced in 2012 and can be used by 2020, some websites with poor expansibility and inconvenient upgrading should be built in place at one time rather than consuming time and money to rebuild the website.
Nowadays, commercial trade tends to be electronic. Generally speaking, e-commerce websites have the following characteristics:
Customers can only understand the shape, characteristics, price and usage of the goods on the e-commerce website through the pictures and descriptions of the goods. Therefore, the feeling of a product is not as specific as shopping in a traditional store, unless the product has been used before.
The word “business” in e-commerce website shows that it has the characteristics of business, that is, doing business. E-commerce website can provide a trading platform for buyers and sellers. Buyers and sellers can not meet each other, or they can be thousands of miles apart. The owner of the website can record and sort out the information left by customers to understand the needs of customers.
Convenient operation is one of the main characteristics that make e-commerce different from traditional business. It makes full use of the advantages of Internet processing, overcomes the disadvantages of the cumbersome operation process in traditional business, and makes the network transaction more rapid and fast.
In order to achieve the purpose of profit, it is required that all links of e-commerce website operate well, such as webpage design and production, commodity transaction, payment for goods, logistics distribution and capital turnover, integrity of both sides of the transaction, guarantee and support of relevant laws.
In order to make the e-commerce website work normally, we must consider the scale of the visit flow, so the system should consider the scalability to prevent the system from blocking.
In e-commerce, security is a key feature. Customers shopping online will put security in the first place. Illegal user’s visit, virus, hacker’s invasion will bring harm to the website. This requires the website to provide an end-to-end security solution, such as encryption mechanism, signature mechanism, security authentication, legal registration, access control, firewall, anti-virus protection, etc., which is very different from the traditional business activities.