Hierarchical vertical expansion of TRee menus implemented by jquery + CSS _ jquery

This article mainly introduces the hierarchical vertical expansion of TRee menu effects implemented by jquery + CSS. It is of great practical value to use jquery's custom function to set corresponding parameters to implement the attribute TRee menu effect, for more information about how to use jquery and CSS to vertically expand the TRee menu, see the following example. Share it with you for your reference. The details are as follows:

The vertical tree menu is demonstrated here. CSS and jquery are used for implementation. It is suitable to display the menu on the left side of the webpage. For simplicity, images and other modifications are not used. This effect is compatible with mainstream browsers such as IE and Firefox.

The running effect is as follows:

The Online Demo address is as follows:

Http://demo.jb51.net/js/2015/jquery-css-nlevel-vshow-tree-codes/

The Code is as follows:

 JQuery hierarchical tree menu