Proper way to make HTML nested list?

Question

The W3 docs have a nested list example prefixed by DEPRECATED EXAMPLE:, but they never corrected it with a non-deprecated example, nor explained exactly what is

Answer 1

Option 2 is correct: The nested

is a child of the
• it belongs in.

  If you validate, option 1 comes up as an error in html 5 -- credit: user3272456

  ---

  Correct:

  as child of

  The proper way to make HTML nested list is with the nested

  as a child of the
  • to which it belongs. The nested list should be inside of the
  • element of the list in which it is nested.

    
        
    Parent/Item
            
    
                
    Child/Subitem
                
            
        
    
    

    ---

    W3C Standard for Nesting Lists

    A list item can contain another entire list — this is known as "nesting" a list. It is useful for things like tables of contents, such as the one at the start of this article:

    1. Chapter One
       1. Section One
       2. Section Two
       3. Section Three
    2. Chapter Two
    3. Chapter Three

    The key to nesting lists is to remember that the nested list should relate to one specific list item. To reflect that in the code, the nested list is contained inside that list item. The code for the list above looks something like this:

    
      
    Chapter One
        
    
          
    Section One
          
    Section Two 
          
    Section Three 
        
      
      
    Chapter Two
      
    Chapter Three  
    
    

    Note how the nested list starts after the

  • and the text of the containing list item (“Chapter One”); then ends before the
  of the containing list item. Nested lists often form the basis for website navigation menus, as they are a good way to define the hierarchical structure of the website.

  Theoretically you can nest as many lists as you like, although in practice it can become confusing to nest lists too deeply. For very large lists, you may be better off splitting the content up into several lists with headings instead, or even splitting it up into separate pages.