HTML, JavaScript, Ajax, and jquery

I recently learned some new knowledge. Through the exercises of the news publishing system and the participating educational administration system, it involves HTML, JavaScript, Ajax, and jquery. The following is a brief summary, hope to criticize and correct.

Hypertext Markup Language (HTML) is a markup language used to describe webpage documents. It is a standard and standard, mark the parts of the web page to be displayed by marking the symbols. The content displayed on the webpage cannot be left without it.

Javascript is a script language executed on the client. It can display actions that cannot be completed by HTML, for example: when you click a button on the interface, a prompt box Indicating whether to execute the function is displayed, which requires help. With JavaScript, people were not satisfied, followed by Ajax and jquery.

Ajax is a javascript-based technology mainly used to provide asynchronous refresh (only refreshing part of the page, rather than refreshing the whole page, the page is refreshed to a new level, eliminating the need for people to see a white page flash after clicking a query on a page, saving a lot of waiting time. The Display Effect of the interface is optimized to make it more user-friendly. In order to avoid duplication and inconvenience, some common functions and tedious implementation methods of JavaScript are combined and packaged, which brings about jquery.

jquery is an excellent javascr transform PT framework. It allows users to use JavaScript technology more easily, it is directly used to meet different user needs.