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Building a Bulleted Menu Of Links: Display Method


Many web pages display their links in the form of a bulleted menu. You can make such menus a bit more interesting by adding functionality to expand and contract the menu, if it makes sense to divide the menu into levels. This two-part article will show you how to do it.

Author Info:
By: Chrysanthus Forcha
Rating: 5 stars5 stars5 stars5 stars5 stars / 4
February 23, 2009
TABLE OF CONTENTS:
  1. · Building a Bulleted Menu Of Links: Display Method
  2. · Operation from the User’s Point of View
  3. · Implementation
  4. · The UL and LI elements

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Building a Bulleted Menu Of Links: Display Method
(Page 1 of 4 )

Meaning

Many web pages have their links on the left side of the page in a column. Consider such a web page with the following three hypothetical links:

  • First Level Link 1

  • First Level Link 2

  • First Level Link 3


Fig.1 Three links

Each of these links is inside a list item of an unordered list. Note the bullet in front of each link. When you click a link, a new web page is obtained and displayed on the browser. Code can be written so that when you click a bullet, the corresponding list item “expands” such that you see another list of links, associated with the list item, below it. The following figure shows a case where all list items have been expanded:

  • First Level Link 1 

    • Second Level Link 11

      • Third Level Link 111

      • Third Level Link 112

      • Third Level Link 113

    • Second Level Link 12

      • Third Level Link 121

      • Third Level Link 122

      • Third Level Link 123

    • Second Level Link 13

      • Third Level Link 131

      • Third Level Link 132

      • Third Level Link 133

  • First Level Link 2

    • Second Level Link 21

      • Third Level Link 211
      • Third Level Link 212

      • Third Level Link 213

    • Second Level Link 22

      • Third Level Link 221

      • Third Level Link 222

      • Third Level Link 223
    • Second Level Link 23

      • Third Level Link 231

      • Third Level Link 232

      • Third Level Link 233
  • First Level Link 3

    • Second Level Link 31

      • Third Level Link 311

      • Third Level Link 312

      • Third Level Link 313
    • Second Level Link 32

      • Third Level Link 321

      • Third Level Link 322

      • Third Level Link 323
    • Second Level Link 33

      • Third Level Link 331

      • Third Level Link 332

      • Third Level Link 333


Fig.2 The bulleted list, completely expanded.

While a list item is expanded into a sub list, if you click its bullet (not the link) again, the list item should collapse, that is, its sub list should disappear, as well as the space occupied by the sub list.


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