ASP (abbreviation for Active Server Page)
Meaning active server web page. ASP is an application developed by Microsoft to replace CGI script programs.
It can interact with databases and other programs and is a simple and convenient programming tool. The format of ASP web page files is .asp, which is commonly used in various dynamic websites.
ASP is a server-side scripting environment that can be used to create and run dynamic web pages or web applications.
Characteristics and functions of ASP language
From a software technology perspective, ASP has the following characteristics:
1. No compilation required
ASP scripts are integrated into HTML, are easy to generate, and can be directly interpreted and executed without compilation or linking.
2. Easy to generate
You can design all .asp pages using a regular text editor (such as Notepad under WINDOWS). If you consider work efficiency, you might as well choose software with visual editing capabilities.
3. Browser independent
As long as the client uses a browser that can interpret conventional HTML codes, it can browse the homepage designed by ASP.
ASP scripts are executed on the server side of the site, and the client's browser does not need to support it. Therefore, if you do not view the entire .asp home page by downloading it from the server, you will not see the correct page content on the browser side.
4. Object-oriented
In ASP scripts, you can easily reference system components and ASP's built-in components, and you can also expand functions by customizing ActiveX Server Component.
5. Good compatibility
Compatible with any ActiveX scripting language, in addition to using VBScript and JScript languages for design, you can also use other scripting languages provided by third parties through Plug-in.
6. The source code will not be leaked.
The ASP script is executed on the server, and what is transmitted to the user's browser is only the regular HTML code generated by the ASP execution result. This ensures that the program code that has been written so hard will not be stolen by others.
From an application level, ASP has the following functions:
1. Process form input sent from the browser to the site server.
2. Access and edit server-side database tables. You can enter, update, and delete data from the site server's database using your browser.
3. Read and write files on the site server to implement functions such as visitor counters and mottos.
4. Provides built-in functions such as ad carousel, browser information acquisition, and URL table management.
5. Read and write the user's hard disk file through cookies to record the user's data.
6. Information can be shared between multiple homepages to develop complex business site applications.
7. Use simple scripting languages such as VBScript or JScript, combined with HTML code, to quickly complete the site's application.
Execute the script language through the site server, and generate or change the script language executed on the client.
8. Strong ability to expand functions. ActiveX Server Component can be made using multiple programming languages such as Visual Basic, Java, and Visual C++ to meet your own special needs.
The general characteristics of dynamic web pages are briefly summarized as follows:
(1) Dynamic web pages are based on database technology, which can greatly reduce the workload of website maintenance;
(2) Websites using dynamic web technology can implement more functions, such as user registration, user login, online survey, user management, order management, etc.;
(3) Dynamic web pages are not actually web page files that exist independently on the server. The server only returns a complete web page when the user requests it;
(4) There are certain problems in search engine retrieval of dynamic web pages. It is generally impossible for search engines to access all web pages from the database of a website, or due to technical considerations, search spiders do not crawl the URLs.
As for the following content, websites using dynamic web pages need to do certain technical processing to adapt to the requirements of search engines when promoting search engines.
The so-called static web page means that there are no programs in the web page file, only HTML code, generally with .html or .htm as the suffix. The content of the static website will not change after the production is completed. Anyone who visits will display the same content. If If your content changes, you must modify the original code and then upload it to the server.
The so-called dynamic web page means that the web page file not only has HTML tags, but also contains program code and is connected to a database. Dynamic web pages can display different content according to different times and different visitors. Dynamic websites are easy to update and are usually updated directly in the background. .