jQuery is a set of Javascript script libraries. The Javascript script library is similar to the .NET class library. We encapsulate some tool methods or object methods in the class library to facilitate user use.

Note that jQuery is a script library, not a script framework. "Library" is not equal to "framework". For example, "System Assembly" is a class library, and "ASP.NET MVC" is a framework. jQuery cannot help us solve the reference management of scripts. And function management, these are what the script framework has to do.

Script libraries can help us complete coding logic and realize business functions. Using jQuery will greatly improve the efficiency of writing JavaScript code, making the written code more elegant and robust. At the same time, the rich jQuery plug-ins on the Internet also make our work easier. It has become "With jQuery, drink tea every day" - because we are already standing on the shoulders of giants.

When you create an ASP.NET MVC project, you will find that the jQuery class library has been automatically introduced. jQuery is almost Microsoft’s official script library! Perfect integration and intelligent sensing support make .NET and jQuery seamlessly combined! So When using .NET, you must choose jQuery instead of Dojo, ExtJS, etc.