jQuery » treeView Basic

Update!

Jörn Zaefferer has informed me that he has begun a rewrite of this for the latest version of jQuery. You can find it in the jQuery plugin repository: http://jquery.com/dev/svn/trunk/plugins/treeview/

Purpose

Create a nice expanding and collapsing tree view control using jQuery.

This is version one. A simple list that gets enhanced.

Usage: class="tv"

Update June 23rd, 2006:

• find("ul") was grabbing grandchildren, changed to find(">ul") which fixes it.
• IE Bugs: [ reference file with bug ]
  • Simple show/hide didn't want to work (items would get overlapped, so I added a toggle for sliding Up and Down) - Fixed
  • First item uncollapsable (no click area)... added a 0% opacity background to the click area with the underscore hack for IE - Fixed

Update July 10th, 2006: Changed .find("li:last-of-type") to .find("li:last-child")

Original Code

$(document).ready(function(){
	$("ul.tv")
		.find("li:last-child").addClass("tvil").end()
		.find("li[ul]").addClass("tvic").swapClass("tvil", "tvilc").append("<div class=\"tvca\">").find("div.tvca").toggle(
				function(){ $(this).parent("li").swapClass("tvic", "tvie").swapClass("tvilc", "tvile").find(">ul").slideUp("normal"); },
				function(){ $(this).parent("li").swapClass("tvic", "tvie").swapClass("tvilc", "tvile").find(">ul").slideDown("normal"); }
			);
});

$.fn.swapClass = function(c1,c2) {
	return this.each(function() {
		if ($.hasWord(this, c1)) {
			$(this).removeClass(c1);
			$(this).addClass(c2);
		} else if ($.hasWord(this, c2)) {
			$(this).removeClass(c2);
			$(this).addClass(c1);
		}					
	});
};

/* 
Code Highlighting 
Courtesy of Dean Edwards star-light 
http://dean.edwards.name/my/behaviors/#star-light.htc
	- with jQuery methods added, of course
*/

Sample Markup

Hard Coded HTML

Sample 1

• Item 1
  • Item 1.1
• Item 2
  • Item 2.1
    • Item 2.1.1
    • Item 2.1.2
  • Item 2.2
• Item 3

Sample 2

• Item 1
• Item 2
  • Item 2.1
    • Item 2.1.1
    • Item 2.1.2
  • Item 2.2
  • Item 2.3
    • Item 2.3.1
    • Item 2.3.2

PHP Generated Random

Some recursive PHP to randomly load variations.

• Item 1
• Item 2
• Item 3
  • Item 3.0
    • Item 3.0.0
      • Item 3.0.0.0
    • Item 3.0.1
      • Item 3.0.1.0
      • Item 3.0.1.1
      • Item 3.0.1.2
    • Item 3.0.2
      • Item 3.0.2.0
      • Item 3.0.2.1
  • Item 3.1
    • Item 3.1.0
      • Item 3.1.0.0
      • Item 3.1.0.1

These examples are here for your own learning. If you find yourself using part or all of them, give credit where appropriate. Enjoy!