今天你终于完成了头大了三天的treeView需求

完整的官方demo路径如下doc>backend_template>products-WBOB30DGR>html>treeview.html，需要的依赖都在asstes目录中，同时还包含一些其他的样式和功能
把其他无关的功能去掉，现在就只剩下一个主要标签

<ul id="tree1"></ul>

这个标签是树的主体，传入的数据会直接渲染到li标签中。
然后是初始化方法

<script type="text/javascript">jQuery(function($){var sampleData = initiateDemoData();//see below$('#tree1').ace_tree({dataSource: sampleData['dataSource1'],multiSelect: true,cacheItems: true,'open-icon' : 'ace-icon tree-minus','close-icon' : 'ace-icon tree-plus','selectable' : true,'selected-icon' : 'ace-icon fa fa-check','unselected-icon' : 'ace-icon fa fa-times',loadingHTML : '<div class="tree-loading"><i class="ace-icon fa fa-refresh fa-spin blue"></i></div>'});$('#tree2').ace_tree({dataSource: sampleData['dataSource2'] ,loadingHTML:'<div class="tree-loading"><i class="ace-icon fa fa-refresh fa-spin blue"></i></div>','open-icon' : 'ace-icon fa fa-folder-open','close-icon' : 'ace-icon fa fa-folder','selectable' : false,multiSelect: false,'selected-icon' : null,'unselected-icon' : null});/**//please refer to docs for more info$('#tree1').on('loaded.fu.tree', function(e) {}).on('updated.fu.tree', function(e, result) {}).on('selected.fu.tree', function(e) {}).on('deselected.fu.tree', function(e) {}).on('opened.fu.tree', function(e) {}).on('closed.fu.tree', function(e) {});*/function initiateDemoData(){var tree_data = {'for-sale' : {text: 'For Sale', type: 'folder'} ,'vehicles' : {text: 'Vehicles', type: 'folder'}  ,'rentals' : {text: 'Rentals', type: 'folder'}    ,'real-estate' : {text: 'Real Estate', type: 'folder'}    ,'pets' : {text: 'Pets', type: 'folder'}  ,'tickets' : {text: 'Tickets', type: 'item'}  ,'services' : {text: 'Services', type: 'item'}    ,'personals' : {text: 'Personals', type: 'item'}}tree_data['for-sale']['additionalParameters'] = {'children' : {'appliances' : {text: 'Appliances', type: 'item'},'arts-crafts' : {text: 'Arts & Crafts', type: 'item'},'clothing' : {text: 'Clothing', type: 'item'},'computers' : {text: 'Computers', type: 'item'},'jewelry' : {text: 'Jewelry', type: 'item'},'office-business' : {text: 'Office & Business', type: 'item'},'sports-fitness' : {text: 'Sports & Fitness', type: 'item'}}}tree_data['vehicles']['additionalParameters'] = {'children' : {'cars' : {text: 'Cars', type: 'folder'},'motorcycles' : {text: 'Motorcycles', type: 'item'},'boats' : {text: 'Boats', type: 'item'}}}tree_data['vehicles']['additionalParameters']['children']['cars']['additionalParameters'] = {'children' : {'classics' : {text: 'Classics', type: 'item'},'convertibles' : {text: 'Convertibles', type: 'item'},'coupes' : {text: 'Coupes', type: 'item'},'hatchbacks' : {text: 'Hatchbacks', type: 'item'},'hybrids' : {text: 'Hybrids', type: 'item'},'suvs' : {text: 'SUVs', type: 'item'},'sedans' : {text: 'Sedans', type: 'item'},'trucks' : {text: 'Trucks', type: 'item'}}}tree_data['rentals']['additionalParameters'] = {'children' : {'apartments-rentals' : {text: 'Apartments', type: 'item'},'office-space-rentals' : {text: 'Office Space', type: 'item'},'vacation-rentals' : {text: 'Vacation Rentals', type: 'item'}}}tree_data['real-estate']['additionalParameters'] = {'children' : {'apartments' : {text: 'Apartments', type: 'item'},'villas' : {text: 'Villas', type: 'item'},'plots' : {text: 'Plots', type: 'item'}}}tree_data['pets']['additionalParameters'] = {'children' : {'cats' : {text: 'Cats', type: 'item'},'dogs' : {text: 'Dogs', type: 'item'},'horses' : {text: 'Horses', type: 'item'},'reptiles' : {text: 'Reptiles', type: 'item'}}}var dataSource1 = function(options, callback){var $data = nullif(!("text" in options) && !("type" in options)){$data = tree_data;//the root treecallback({ data: $data });return;}else if("type" in options && options.type == "folder") {if("additionalParameters" in options && "children" in options.additionalParameters)$data = options.additionalParameters.children || {};else $data = {}//no data}if($data != null)//this setTimeout is only for mimicking some random delaysetTimeout(function(){callback({ data: $data });} , parseInt(Math.random() * 500) + 200);//we have used static data here//but you can retrieve your data dynamically from a server using ajax call//checkout examples/treeview.html and examples/treeview.js for more info}var tree_data_2 = {'pictures' : {text: 'Pictures', type: 'folder', 'icon-class':'red'}  ,'music' : {text: 'Music', type: 'folder', 'icon-class':'orange'} ,'video' : {text: 'Video', type: 'folder', 'icon-class':'blue'}   ,'documents' : {text: 'Documents', type: 'folder', 'icon-class':'green'}  ,'backup' : {text: 'Backup', type: 'folder'}  ,'readme' : {text: '<i class="ace-icon fa fa-file-text grey"></i> ReadMe.txt', type: 'item'},'manual' : {text: '<i class="ace-icon fa fa-book blue"></i> Manual.html', type: 'item'}}tree_data_2['music']['additionalParameters'] = {'children' : [{text: '<i class="ace-icon fa fa-music blue"></i> song1.ogg', type: 'item'},{text: '<i class="ace-icon fa fa-music blue"></i> song2.ogg', type: 'item'},{text: '<i class="ace-icon fa fa-music blue"></i> song3.ogg', type: 'item'},{text: '<i class="ace-icon fa fa-music blue"></i> song4.ogg', type: 'item'},{text: '<i class="ace-icon fa fa-music blue"></i> song5.ogg', type: 'item'}]}tree_data_2['video']['additionalParameters'] = {'children' : [{text: '<i class="ace-icon fa fa-film blue"></i> movie1.avi', type: 'item'},{text: '<i class="ace-icon fa fa-film blue"></i> movie2.avi', type: 'item'},{text: '<i class="ace-icon fa fa-film blue"></i> movie3.avi', type: 'item'},{text: '<i class="ace-icon fa fa-film blue"></i> movie4.avi', type: 'item'},{text: '<i class="ace-icon fa fa-film blue"></i> movie5.avi', type: 'item'}]}tree_data_2['pictures']['additionalParameters'] = {'children' : {'wallpapers' : {text: 'Wallpapers', type: 'folder', 'icon-class':'pink'},'camera' : {text: 'Camera', type: 'folder', 'icon-class':'pink'}}}tree_data_2['pictures']['additionalParameters']['children']['wallpapers']['additionalParameters'] = {'children' : [{text: '<i class="ace-icon fa fa-picture-o green"></i> wallpaper1.jpg', type: 'item'},{text: '<i class="ace-icon fa fa-picture-o green"></i> wallpaper2.jpg', type: 'item'},{text: '<i class="ace-icon fa fa-picture-o green"></i> wallpaper3.jpg', type: 'item'},{text: '<i class="ace-icon fa fa-picture-o green"></i> wallpaper4.jpg', type: 'item'}]}tree_data_2['pictures']['additionalParameters']['children']['camera']['additionalParameters'] = {'children' : [{text: '<i class="ace-icon fa fa-picture-o green"></i> photo1.jpg', type: 'item'},{text: '<i class="ace-icon fa fa-picture-o green"></i> photo2.jpg', type: 'item'},{text: '<i class="ace-icon fa fa-picture-o green"></i> photo3.jpg', type: 'item'},{text: '<i class="ace-icon fa fa-picture-o green"></i> photo4.jpg', type: 'item'},{text: '<i class="ace-icon fa fa-picture-o green"></i> photo5.jpg', type: 'item'},{text: '<i class="ace-icon fa fa-picture-o green"></i> photo6.jpg', type: 'item'}]}tree_data_2['documents']['additionalParameters'] = {'children' : [{text: '<i class="ace-icon fa fa-file-text red"></i> document1.pdf', type: 'item'},{text: '<i class="ace-icon fa fa-file-text grey"></i> document2.doc', type: 'item'},{text: '<i class="ace-icon fa fa-file-text grey"></i> document3.doc', type: 'item'},{text: '<i class="ace-icon fa fa-file-text red"></i> document4.pdf', type: 'item'},{text: '<i class="ace-icon fa fa-file-text grey"></i> document5.doc', type: 'item'}]}tree_data_2['backup']['additionalParameters'] = {'children' : [{text: '<i class="ace-icon fa fa-archive brown"></i> backup1.zip', type: 'item'},{text: '<i class="ace-icon fa fa-archive brown"></i> backup2.zip', type: 'item'},{text: '<i class="ace-icon fa fa-archive brown"></i> backup3.zip', type: 'item'},{text: '<i class="ace-icon fa fa-archive brown"></i> backup4.zip', type: 'item'}]}var dataSource2 = function(options, callback){var $data = nullif(!("text" in options) && !("type" in options)){$data = tree_data_2;//the root treecallback({ data: $data });return;}else if("type" in options && options.type == "folder") {if("additionalParameters" in options && "children" in options.additionalParameters)$data = options.additionalParameters.children || {};else $data = {}//no data}if($data != null)//this setTimeout is only for mimicking some random delaysetTimeout(function(){callback({ data: $data });} , parseInt(Math.random() * 500) + 200);//we have used static data here//but you can retrieve your data dynamically from a server using ajax call//checkout examples/treeview.html and examples/treeview.js for more info}return {'dataSource1': dataSource1 , 'dataSource2' : dataSource2}}});
</script>

1. 第一部分，sampleData是声明的数据源，initiateDemoData()这个方法返回的值对它进行初始化。

initiateDemoData()

var tree_data = {'for-sale' : {text: 'For Sale', type: 'folder'} ,'vehicles' : {text: 'Vehicles', type: 'folder'}  ,'rentals' : {text: 'Rentals', type: 'folder'}    ,'real-estate' : {text: 'Real Estate', type: 'folder'}    ,'pets' : {text: 'Pets', type: 'folder'}  ,'tickets' : {text: 'Tickets', type: 'item'}  ,'services' : {text: 'Services', type: 'item'}    ,'personals' : {text: 'Personals', type: 'item'}}tree_data['for-sale']['additionalParameters'] = {'children' : {'appliances' : {text: 'Appliances', type: 'item'},'arts-crafts' : {text: 'Arts & Crafts', type: 'item'},'clothing' : {text: 'Clothing', type: 'item'},'computers' : {text: 'Computers', type: 'item'},'jewelry' : {text: 'Jewelry', type: 'item'},'office-business' : {text: 'Office & Business', type: 'item'},'sports-fitness' : {text: 'Sports & Fitness', type: 'item'}}}tree_data['vehicles']['additionalParameters'] = {'children' : {'cars' : {text: 'Cars', type: 'folder'},'motorcycles' : {text: 'Motorcycles', type: 'item'},'boats' : {text: 'Boats', type: 'item'}}}tree_data['vehicles']['additionalParameters']['children']['cars']['additionalParameters'] = {'children' : {'classics' : {text: 'Classics', type: 'item'},'convertibles' : {text: 'Convertibles', type: 'item'},'coupes' : {text: 'Coupes', type: 'item'},'hatchbacks' : {text: 'Hatchbacks', type: 'item'},'hybrids' : {text: 'Hybrids', type: 'item'},'suvs' : {text: 'SUVs', type: 'item'},'sedans' : {text: 'Sedans', type: 'item'},'trucks' : {text: 'Trucks', type: 'item'}}}tree_data['rentals']['additionalParameters'] = {'children' : {'apartments-rentals' : {text: 'Apartments', type: 'item'},'office-space-rentals' : {text: 'Office Space', type: 'item'},'vacation-rentals' : {text: 'Vacation Rentals', type: 'item'}}}tree_data['real-estate']['additionalParameters'] = {'children' : {'apartments' : {text: 'Apartments', type: 'item'},'villas' : {text: 'Villas', type: 'item'},'plots' : {text: 'Plots', type: 'item'}}}tree_data['pets']['additionalParameters'] = {'children' : {'cats' : {text: 'Cats', type: 'item'},'dogs' : {text: 'Dogs', type: 'item'},'horses' : {text: 'Horses', type: 'item'},'reptiles' : {text: 'Reptiles', type: 'item'}}}var dataSource1 = function(options, callback){var $data = nullif(!("text" in options) && !("type" in options)){$data = tree_data;//the root treecallback({ data: $data });return;}else if("type" in options && options.type == "folder") {if("additionalParameters" in options && "children" in options.additionalParameters)$data = options.additionalParameters.children || {};else $data = {}//no data}if($data != null)//this setTimeout is only for mimicking some random delaysetTimeout(function(){callback({ data: $data });} , parseInt(Math.random() * 500) + 200);//we have used static data here//but you can retrieve your data dynamically from a server using ajax call//checkout examples/treeview.html and examples/treeview.js for more info}var tree_data_2 = {'pictures' : {text: 'Pictures', type: 'folder', 'icon-class':'red'}  ,'music' : {text: 'Music', type: 'folder', 'icon-class':'orange'} ,'video' : {text: 'Video', type: 'folder', 'icon-class':'blue'}   ,'documents' : {text: 'Documents', type: 'folder', 'icon-class':'green'}  ,'backup' : {text: 'Backup', type: 'folder'}  ,'readme' : {text: '<i class="ace-icon fa fa-file-text grey"></i> ReadMe.txt', type: 'item'},'manual' : {text: '<i class="ace-icon fa fa-book blue"></i> Manual.html', type: 'item'}}tree_data_2['music']['additionalParameters'] = {'children' : [{text: '<i class="ace-icon fa fa-music blue"></i> song1.ogg', type: 'item'},{text: '<i class="ace-icon fa fa-music blue"></i> song2.ogg', type: 'item'},{text: '<i class="ace-icon fa fa-music blue"></i> song3.ogg', type: 'item'},{text: '<i class="ace-icon fa fa-music blue"></i> song4.ogg', type: 'item'},{text: '<i class="ace-icon fa fa-music blue"></i> song5.ogg', type: 'item'}]}tree_data_2['video']['additionalParameters'] = {'children' : [{text: '<i class="ace-icon fa fa-film blue"></i> movie1.avi', type: 'item'},{text: '<i class="ace-icon fa fa-film blue"></i> movie2.avi', type: 'item'},{text: '<i class="ace-icon fa fa-film blue"></i> movie3.avi', type: 'item'},{text: '<i class="ace-icon fa fa-film blue"></i> movie4.avi', type: 'item'},{text: '<i class="ace-icon fa fa-film blue"></i> movie5.avi', type: 'item'}]}tree_data_2['pictures']['additionalParameters'] = {'children' : {'wallpapers' : {text: 'Wallpapers', type: 'folder', 'icon-class':'pink'},'camera' : {text: 'Camera', type: 'folder', 'icon-class':'pink'}}}tree_data_2['pictures']['additionalParameters']['children']['wallpapers']['additionalParameters'] = {'children' : [{text: '<i class="ace-icon fa fa-picture-o green"></i> wallpaper1.jpg', type: 'item'},{text: '<i class="ace-icon fa fa-picture-o green"></i> wallpaper2.jpg', type: 'item'},{text: '<i class="ace-icon fa fa-picture-o green"></i> wallpaper3.jpg', type: 'item'},{text: '<i class="ace-icon fa fa-picture-o green"></i> wallpaper4.jpg', type: 'item'}]}tree_data_2['pictures']['additionalParameters']['children']['camera']['additionalParameters'] = {'children' : [{text: '<i class="ace-icon fa fa-picture-o green"></i> photo1.jpg', type: 'item'},{text: '<i class="ace-icon fa fa-picture-o green"></i> photo2.jpg', type: 'item'},{text: '<i class="ace-icon fa fa-picture-o green"></i> photo3.jpg', type: 'item'},{text: '<i class="ace-icon fa fa-picture-o green"></i> photo4.jpg', type: 'item'},{text: '<i class="ace-icon fa fa-picture-o green"></i> photo5.jpg', type: 'item'},{text: '<i class="ace-icon fa fa-picture-o green"></i> photo6.jpg', type: 'item'}]}tree_data_2['documents']['additionalParameters'] = {'children' : [{text: '<i class="ace-icon fa fa-file-text red"></i> document1.pdf', type: 'item'},{text: '<i class="ace-icon fa fa-file-text grey"></i> document2.doc', type: 'item'},{text: '<i class="ace-icon fa fa-file-text grey"></i> document3.doc', type: 'item'},{text: '<i class="ace-icon fa fa-file-text red"></i> document4.pdf', type: 'item'},{text: '<i class="ace-icon fa fa-file-text grey"></i> document5.doc', type: 'item'}]}tree_data_2['backup']['additionalParameters'] = {'children' : [{text: '<i class="ace-icon fa fa-archive brown"></i> backup1.zip', type: 'item'},{text: '<i class="ace-icon fa fa-archive brown"></i> backup2.zip', type: 'item'},{text: '<i class="ace-icon fa fa-archive brown"></i> backup3.zip', type: 'item'},{text: '<i class="ace-icon fa fa-archive brown"></i> backup4.zip', type: 'item'}]}var dataSource2 = function(options, callback){var $data = nullif(!("text" in options) && !("type" in options)){$data = tree_data_2;//the root treecallback({ data: $data });return;}else if("type" in options && options.type == "folder") {if("additionalParameters" in options && "children" in options.additionalParameters)$data = options.additionalParameters.children || {};else $data = {}//no data}if($data != null)//this setTimeout is only for mimicking some random delaysetTimeout(function(){callback({ data: $data });} , parseInt(Math.random() * 500) + 200);//we have used static data here//but you can retrieve your data dynamically from a server using ajax call//checkout examples/treeview.html and examples/treeview.js for more info}return {'dataSource1': dataSource1 , 'dataSource2' : dataSource2}}

initiateDemoData()这个方法名误导了我好久，根据字面意思是初始化整个tree的意思，后来发现，如果在里面打印参数的话，不仅初始化会调用，在每次点击父标签生成子列表的时候也会调用，这说明这个函数的功能是给生成的列表提供数据，无论是初始化还是渲染下一级。

var tree_data = {'for-sale' : {text: 'For Sale', type: 'folder'}    ,'vehicles' : {text: 'Vehicles', type: 'folder'}  ,'rentals' : {text: 'Rentals', type: 'folder'}    ,'real-estate' : {text: 'Real Estate', type: 'folder'}    ,'pets' : {text: 'Pets', type: 'folder'}  ,'tickets' : {text: 'Tickets', type: 'item'}  ,'services' : {text: 'Services', type: 'item'}    ,'personals' : {text: 'Personals', type: 'item'}}

首先声明数据源tree_data，从声明可以看出，数据源的格式是其中必须包含有text和type两个参数，text是展示的值，type有两种值，item表示下面没有children，标签左边有checkbox，可以被选择。folder表示有children，标签带加号，可以展开，无论是否真的有children。

tree_data['for-sale']['additionalParameters'] = {'children' : {'appliances' : {text: 'Appliances', type: 'item'},'arts-crafts' : {text: 'Arts & Crafts', type: 'item'},'clothing' : {text: 'Clothing', type: 'item'},'computers' : {text: 'Computers', type: 'item'},'jewelry' : {text: 'Jewelry', type: 'item'},'office-business' : {text: 'Office & Business', type: 'item'},'sports-fitness' : {text: 'Sports & Fitness', type: 'item'}}}

tree_data中如果有children的话需要定义在additionalParameters中

var dataSource1 = function(options, callback){var $data = nullif(!("text" in options) && !("type" in options)){$data = tree_data;//the root treecallback({ data: $data });return;}else if("type" in options && options.type == "folder") {if("additionalParameters" in options && "children" in options.additionalParameters)$data = options.additionalParameters.children || {};else $data = {}//no data}if($data != null)//this setTimeout is only for mimicking some random delaysetTimeout(function(){callback({ data: $data });} , parseInt(Math.random() * 500) + 200);//we have used static data here//but you can retrieve your data dynamically from a server using ajax call//checkout examples/treeview.html and examples/treeview.js for more info}

然后声明var dataSource1 = function(options, callback){ ,其中options保存着父标签的数据。
这里可以进行数据的动态加载
简化一下结构就是

var dataSource1 = function(options, callback){var $data = ...   //进行数据的加载callback({ data: $data });
}

最后返回dataSource1.

1. 下面是初始化过程

var sampleData = initiateDemoData();//see below$('#tree1').ace_tree({dataSource: sampleData['dataSource1'],//数据源multiSelect: true,//是否允许多选cacheItems: true,//缓存是否有效'open-icon' : 'ace-icon tree-minus',//标签打开的icon'close-icon' : 'ace-icon tree-plus',//标签关闭的icon'selectable' : true,//checkBox是否有效'selected-icon' : 'ace-icon fa fa-check',//选中状态的icon'unselected-icon' : 'ace-icon fa fa-times',//未选中状态的iconloadingHTML : '<div class="tree-loading"><i class="ace-icon fa fa-refresh fa-spin blue"></i></div>'//加载icon});

一些时间的回调函数

/**//please refer to docs for more info$('#tree1').on('loaded.fu.tree', function(e) {}).on('updated.fu.tree', function(e, result) {}).on('selected.fu.tree', function(e) {}).on('deselected.fu.tree', function(e) {}).on('opened.fu.tree', function(e) {}).on('closed.fu.tree', function(e) {});*/

使用时直接加在后面

$('#tree2').ace_tree({dataSource: sampleData['dataSource2'] ,loadingHTML:'<div class="tree-loading"><i class="ace-icon fa fa-refresh fa-spin blue"></i></div>','open-icon' : 'ace-icon fa fa-folder-open','close-icon' : 'ace-icon fa fa-folder','selectable' : false,multiSelect: false,'selected-icon' : null,'unselected-icon' : null}).on('loaded.fu.tree', function(e) {});

，function中的参数有两种情况，一个参数时保存的我也不知道是个啥，，，两个参数时}).on('loaded.fu.tree', function(e，data) { 其中data保存的是触发事件的标签的数据。

大致就是这样