JS implementation of Web page multilevel cascading menu code _javascript skills

This article describes the JS implementation of the Web page multilevel cascading menu. Share to everyone for your reference. Specifically as follows:

This is a cascading menu effect that you'll often see on the web, however, this code is to be implemented by JS, cascading menu content in the JS array, in order to page beautiful, this time also beautify the table border, the overall look more harmonious practical, multi-level drop-down menu for Web design is more practical.

The effect is as shown in the following illustration:

The online demo address is as follows:

http://demo.jb51.net/js/2015/js-table-select-menu-style-codes/

The specific code is as follows:

<!
DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en" "Http://www.w3.org/TR/html4/loose.dtd" >  

The

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