JS + CSS implement the classic left-side vertical sliding menu effect _ javascript skills

This article mainly introduces JS + CSS to achieve the classic left-side vertical sliding menu effect. It involves related techniques related to JavaScript responding to mouse events and dynamic page elements, and has some reference value, for more information, see the examples in this article. JS + CSS provides a classic left-side vertical sliding menu. Share it with you for your reference. The details are as follows:

This is a transformed vertical sliding menu on the left. It is based on JavaScript + CSS and does not have much modification. It mainly wants to achieve the menu animation effect. If you want to use it, beautify it yourself.

The running effect is as follows:

The Online Demo address is as follows:

Http://demo.jb51.net/js/2015/js-css-jd-left-v-hd-menu-style-codes/

The Code is as follows:

Transformed left vertical sliding menu
          
 
 
 
 
 
  
  
 
   
 
    
First-level information
 
   
 
  
 
 
 
Layer 2
Layer 2
Layer 2
 
             
 
 
 
  
  
 
   
 
    
Layer 2 Information
 
   
 
  
 
 
Layer 2
Layer 2
Layer 2
 
             
 
 
 
  
  
 
   
 
    
Layer 3 Information
 
   
 
  
 
 
Layer 2
Layer 2
Layer 2