dhtmlxtree学习笔记一（快速入门）
由于工作需要，写一个树状结构，本打算使用ext，但是api过多，内容过于复杂，学习成本比较高，最终还是选择放弃了。最终选择了dhtmlxtree 这个插件，下面我简单介绍一下自己学习的东西。
?
从网上下载dhtmlxtree 地址是?http://dhtmlx.com/docs/products/dhtmlxTree/
?
解压zip包，进入dhtmlxTree目录下面的samples中的内容是无法显示效果的，原因我还不是很清楚，为了能看到sample效果，我们可以放到web容器中（如tomcat），然后通过web容器访问就可以了。
?
快速入门
1、把[解压dthmlxtree.zip包目录]dhtmlxTree\samples下的common目录考入到web工程中
2、把如下文件也引入到web工程中
? ? 1）dhtmlxcommon.js
? ? 2）dhtmlxtree.js?
? ? 3）dhtmlxtree.css ??---- 前三个js是创建tree的基础js,必须要引入的
? ? 4）dhtmlxtree_json.js ---- 使用json数据需要引入的js
? ? 5）dhtmlxtree_start.js ---- 如何是想对网页中的标签改成tree格式，就需要引入这个js
?
引入的结构如下图所示：
?
?
引入本地的xml文件
?
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head><title>Easy skinable design</title><meta http-equiv="content-type" content="text/html; charset=utf-8" /><meta name="title" content="Samples" /><meta name="keywords" content="" /><meta name="description" content="" /></head><body><!-- 引入必需的css和js --><link rel="STYLESHEET" type="text/css"href="dhtmlxtree/dhtmlxtree.css"><script src="dhtmlxtree/dhtmlxcommon.js"></script><script src="dhtmlxtree/dhtmlxtree.js"></script><!-- 这个div使用来装载tree的容器 --><div id="treeboxbox_tree"style="width: 250px; height: 218px; background-color: #f5f5f5; border: 1px solid Silver;"></div><script>tree=new dhtmlXTreeObject("treeboxbox_tree","100%","100%",0);//选择显示的皮肤tree.setSkin('dhx_skyblue');//告诉dhtmlxtree显示的图片在什么位置tree.setImagePath("dhtmlxtree/common/images/");tree.enableDragAndDrop(0);tree.enableTreeLines(false);tree.setImageArrays("plus","","","","plus.gif");tree.setImageArrays("minus","","","","minus.gif");tree.setStdImages("book.gif","books_open.gif","books_close.gif");//导入本地的数据（是xml格式的）tree.setXMLAutoLoading("dhtmlxtree/common/tree4.xml");tree.loadXML("dhtmlxtree/common/tree4.xml");</script></body></html>??指明xml文件的内容
<?xml version='1.0' encoding='iso-8859-1'?><tree id="0"><item text="Books" id="books" open="1" call="1" select="1"><item text="Mystery & Thrillers" id="mystery" ><item text="Lawrence Block" id="lb" ><item text="All the Flowers Are Dying" id="lb_1" /><item text="The Burglar on the Prowl" id="lb_2" /><item text="The Plot Thickens" id="lb_3" /><item text="Grifter's Game" id="lb_4" /><item text="The Burglar Who Thought He Was Bogart" id="lb_5" /></item><item text="Robert Crais" id="rc" ><item text="The Forgotten Man" id="rc_1" /><item text="Stalking the Angel" id="rc_2" /><item text="Free Fall" id="rc_3" /><item text="Sunset Express" id="rc_4" /><item text="Hostage" id="rc_5" /></item><item text="Ian Rankin" id="ir" ></item><item text="James Patterson" id="jp" ></item><item text="Nancy Atherton" id="na" ></item></item><item text="History" id="history" ><item text="John Mack Faragher" id="jmf" ></item><item text="Jim Dwyer" id="jd" ></item><item text="Larry Schweikart" id="ls" ></item><item text="R. Lee Ermey" id="rle" ></item></item><item text="Horror" id="horror" open="1" ><item text="Stephen King" id="sk" ></item><item text="Dan Brown" id="db" ><item text="Angels & Demons" id="db_1" /><item text="Deception Point" id="db_2" /><item text="Digital Fortress" id="db_3" /><item text="The Da Vinci Code" id="db_4" /><item text="Deception Point" id="db_5" /></item><item text="Mary Janice Davidson" id="mjd" ></item><item text="Katie Macalister" id="km" ></item></item><item text="Science Fiction & Fantasy" id="fantasy" ><item text="Audrey Niffenegger" id="af" ></item><item text="Philip Roth" id="pr" ></item></item><item text="Sport" id="sport" ><item text="Bill Reynolds" id="br" ></item></item><item text="Teens" id="teens" ><item text="Joss Whedon" id="jw" ><item text="Astonishing X-Men" id="jw_1" /><item text="Joss Whedon: The Genius Behind Buffy" id="jw_2" /><item text="Fray" id="jw_3" /><item text="Tales Of The Vampires" id="jw_4" /><item text="The Harvest" id="jw_5" /></item><item text="Meg Cabot" id="mc" ></item><item text="Garth Nix" id="gn" ></item><item text="Ann Brashares" id="ab" ></item></item></item></tree>
?
通过页面的html将html代码转换为tree结构
?
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"> <head> <title> Easy skinable design </title> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <meta name="title" content="Samples" /> <meta name="keywords" content="" /> <meta name="description" content="" /> <link rel="STYLESHEET" type="text/css" href="dhtmlxtree/dhtmlxtree.css"> <script src="dhtmlxtree/dhtmlxcommon.js"></script> <script src="dhtmlxtree/dhtmlxtree.js"></script> <script src="dhtmlxtree/dhtmlxtree_start.js"></script> </head> <body><!-- <div id="treeboxbox_tree" setImagePath="dhtmlxtree/common/images/"style="width: 250px; height: 218px; overflow: auto;"> <ul> <li> Root <ul> <li> Child1 <ul> <li> Child 1-1 </li> </ul> <li> Child2 </li> <li> <b> Bold </b> <i> Italic </i> </li> </ul> </li> </ul></div> --> <div id="treeboxbox_tree" setImagePath="dhtmlxtree/common/images/" open="1" id="11"> <item text="Child1" select="1" open="1" id="12"> <item text="Child1-1" id="13" /> </item> <item text="Child2" id="14" /> <item id="15" text="Text" /> </item> </xmp> </div> </body></html>?注意：
?
1、一定要引入dhtmlxtree_start.js文件，当然，基础的js也是不能少的。
2、在target DIV中需要指明 class 和 setImagePath两个属性的值
3、我们不需要像引入xml一样再次创建dhtmlXTreeObject对象，即不需要再次写JS代码了
4、上面提供了两种方式都可以生产一棵树——（ul li标签）（xmp item标签）
?
下面介绍如何使用json
?
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head><title>Easy skinable design</title><meta http-equiv="content-type" content="text/html; charset=utf-8" /><meta name="title" content="Samples" /><meta name="keywords" content="" /><meta name="description" content="" /></head><body><link rel="STYLESHEET" type="text/css"href="dhtmlxtree/dhtmlxtree.css"><script src="dhtmlxtree/dhtmlxcommon.js"></script><script src="dhtmlxtree/dhtmlxtree.js"></script><!-- 如果是使用json格式就必须引入 dhtmlxtree_json.js文件--><script src="dhtmlxtree/dhtmlxtree_json.js"></script><div id="treeboxbox_tree"style="width: 250px; height: 218px; background-color: #f5f5f5; border: 1px solid Silver;"></div><script>tree=new dhtmlXTreeObject("treeboxbox_tree","100%","100%",0);tree.setSkin('dhx_skyblue');tree.setImagePath("dhtmlxtree/common/images/");tree.enableDragAndDrop(0);tree.enableTreeLines(false);tree.setImageArrays("plus","","","","plus.gif");tree.setImageArrays("minus","","","","minus.gif");tree.setStdImages("book.gif","books_open.gif","books_close.gif");var json = { id: 0, item:[ { id:"X1", text:"一", item:[ { id:"X11", text:"一一" }, { id:"X12", text:"一二" } ] }, { id:"X2", text:"二", item:[ { id:"X21", text:"二一" }, { id:"X22", text:"二二" } ] } ]};var jsondata = {id:0, item:[{id:1,text:"first"},{id:2, text:"middle", item:[{id:"21", text:"child"}]},{id:3,text:"last"}]};tree.loadJSONObject(json,function(){});</script></body></html>?