直接用JSON创建树形控件（Ext.tree.TreePanel ）
1、创建多个根节点的树形
2、直接使用JsonList创建树形
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <meta name="keywords" content="Extjs, Ext, Ext JS, Ext JavaScript, example, fully loaded tree example, static tree, tree example Ext" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Fully Loaded Tree</title> <link rel="stylesheet" type="text/css" href="../../resources/css/ext-all.css" mce_href="resources/css/ext-all.css" /> <mce:script type="text/javascript" src="../../adapter/ext/ext-base.js" mce_src="adapter/ext/ext-base.js"></mce:script> <mce:script type="text/javascript" src="../../ext-all.js" mce_src="ext-all.js"></mce:script> <mce:script type="text/javascript" src="../../ext-lang-zh_CN.js" mce_src="ext-lang-zh_CN.js"></mce:script> <mce:script type="text/javascript"><!-- Ext.onReady(function(){ // json data describing the tree var json = [ {"text" : "Audi", "id" : 100, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "A3", "id" : 10001, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "A4", "id" : 10002, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "A6", "id" : 10003, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "A8", "id" : 10004, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "Q7", "id" : 10005, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "S4", "id" : 10006, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "S6", "id" : 10007, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "S8", "id" : 10008, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "TT", "id" : 10009, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }] }, {"text" : "BMW", "id" : 200, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "3 Series Convertible", "id" : 10001, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "3 Series Coop", "id" : 10002, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "3 Series Sedan", "id" : 11000, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "3 Series Sports Wagon", "id" : 21000, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "5 Series", "id" : 31000, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "6 Series", "id" : 41000, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "7 Series", "id" : 51000, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "M", "id" : 61000, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "M3", "id" : 71000, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "M5", "id" : 81000, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "M6", "id" : 91000, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "X3", "id" : 101000, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "X5", "id" : 111000, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "Z4", "id" : 121000, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }] }, {"text" : "Cadillac", "id" : 300, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "CTS", "id" : 11000, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "CTS-V", "id" : 21000, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "DTS", "id" : 31000, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "Escalade", "id" : 41000, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "Escalade - ESV", "id" : 51000, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "Escalade - EXT", "id" : 61000, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "SRX", "id" : 71000, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "STS", "id" : 81000, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "STS-V", "id" : 91000, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "XLR", "id" : 111000, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "XLR-V", "id" : 121000, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }] }, {"text" : "Jaguar", "id" : 400, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "S-Type", "id" : 11, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "X-Type", "id" : 22, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "XJ-Series", "id" : 33, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "XK-Series", "id" : 44, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }] }, {"text" : "Maserati", "id" : 1000, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Coupe", "id" : 10200, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "Grand Sport", "id" : 10300, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "Quattroporte", "id" : 10400, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }] }, {"text" : "Porsche", "id" : 1000, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "911 Carrera", "id" : 123, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "911 Carrera 4", "id" : 90, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "911 Turbo", "id" : 789, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "Boxster", "id" : 56, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "Cayenne", "id" : 334, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }, {"text" : "Cayman", "id" : 222, "leaf" : false, "cls" : "folder", "children" : [ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"}, {"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"}, {"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"}, {"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"}, {"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"} ] }] } ]; // shorthand var Tree = Ext.tree; var tree = new Tree.TreePanel( //'tree', { title:'选项列表', 200, height:300, root:root, animate: true,//是否动画 useArrows: true,//树形目录使用visit中树目录显示效果(三角形代替+号) rootVisible : false,//顶节点是否显示、设置成false后顶节点的子节点就作为顶节点（可以有多个子节点作为顶节点） enableDD:false, loader: new Tree.TreeLoader(), // Note: no dataurl, register a TreeLoader to make use of createNode() lines: true, selModel: new Ext.tree.MultiSelectionModel(), containerScroll: false }); // set the root node var root = new Tree.TreeNode({ text: 'Autos', draggable:false, id:'source' }); tree.setRootNode(root); var objLoader = tree.getLoader(); for(var i = 0, len = json.length; i < len; i++) { root.appendChild(objLoader.createNode(json[i])); } tree.render(document.body); root.expand(); }); // --></mce:script> </head> <body> <div id="tree"></div> </body> </html>