Introduction - If you have any usage issues, please Google them yourself
jQuery is a fast, simple javaScript libraries, allowing users to more easily deal with HTML documents, events, to achieve animation effects, and to facilitate interaction for AJAX web site. jQuery also has a relatively large advantage is that it' s documentation is very full, but a variety of applications has made it very detailed, along with many mature plug-ins to choose from. jQuery enables users to keep the html page code and html content separation, that is, no longer inserted inside a bunch of js in the html to call the command, and only the definition of id can be.