实例化。这里增加了三个属性，可以指定idFiled，textFiled和parentField。所以这里的simpleData可以不严格转换成tree的数据格式。
$(function(){$('#tt3').tree({checkbox: true,url: 'tree_data_simp.php',parentField:"pid",textFiled:"name",idFiled:"key"});});
tree_data_simp.php 的json数据类型。是一个扁平结构数据集。
[ { "key": 1, "name": "Folder1", "iconCls": "icon-ok" }, { "key": 2,"pid": 1, "name": "File1", "checked": true }, { "key": 3,"pid": 1, "name": "Folder2", "state": "open" }, { "key": 4, "pid": 3, "name": "File3", "attributes": { "p1": "value1", "p2": "value2" }, "checked": true, "iconCls": "icon-reload" }, { "key": 8, "pid": 3, "name": "Async Folder" }, { "key": 9, "name": "language", "state": "closed" }, { "key": "j1", "pid": 9, "name": "Java" }, { "key": "j2", "pid": 9, "name": "C#" }]
自定义loadFilter的实现
$.fn.tree.defaults.loadFilter = function (data, parent) {var opt = $(this).data().tree.options;var idFiled,textFiled,parentField;if (opt.parentField) {idFiled = opt.idFiled || 'id';textFiled = opt.textFiled || 'text';parentField = opt.parentField;var i,l,treeData = [],tmpMap = [];for (i = 0, l = data.length; i < l; i++) {tmpMap[data[i][idFiled]] = data[i];}for (i = 0, l = data.length; i < l; i++) {if (tmpMap[data[i][parentField]] && data[i][idFiled] != data[i][parentField]) {if (!tmpMap[data[i][parentField]]['children'])tmpMap[data[i][parentField]]['children'] = [];data[i]['text'] = data[i][textFiled];tmpMap[data[i][parentField]]['children'].push(data[i]);} else {data[i]['text'] = data[i][textFiled];treeData.push(data[i]);}}return treeData;}return data;};
