JS+CSS implementation of simple folded expanded multilevel menu effect _javascript skills

The example of this article describes the JS+CSS implementation of collapsible expanded multilevel menu effect. Share to everyone for your reference. Specifically as follows:

This is a JS+CSS implementation of the multi-level folding menu, foldable expansion/closure, no reference to any external files, also did not use the picture, although simple, but also a bit rough, but the core of things have been shown to everyone, is studying the folding menu of friends, this small example may be just what you need, Take a good look at it.

The screenshot of the running effect is as follows:

The online demo address is as follows:

http://demo.jb51.net/js/2015/js-css-simple-zdzk-menu-style-codes/

The specific code is as follows:

<! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">  

The

wants this article to help you with your JavaScript programming.