JSON无限折叠菜单编写实例(4)

init: function(options){
        this.config = $.extend(this.config,options || {});
        var self = this,
            _config = self.config,
            _cache = self.cache;

        // 渲染html结构
        $(_config.containerCls).each(function(index,item){

            self._renderHTML(item);

// 处理点击事件
            self._bindEnv(item);
        });
    },
    _renderHTML: function(container){
        var self = this,
            _config = self.config,
            _cache = self.cache;
        var ulhtml = $('<ul></ul>');
        $(_config.menuArrs).each(function(index,item){
            var lihtml = $('<li><h2>'+item.name+'</h2></li>');

if(item.submenu && item.submenu.length > 0) {
                self._createSubMenu(item.submenu,lihtml);
            }
            $(ulhtml).append(lihtml);
        });
        $(container).append(ulhtml);

        _config.renderCallBack && $.isFunction(_config.renderCallBack) && _config.renderCallBack();

        // 处理层级缩进
        self._levelIndent(ulhtml);
    },
    /**
     * 创建子菜单
     * @param {array} 子菜单
     * @param {lihtml} li项
     */
    _createSubMenu: function(submenu,lihtml){
        var self = this,
            _config = self.config,
            _cache = self.cache;
        var subUl = $('<ul></ul>'),
            callee = arguments.callee,
            subLi;

        $(submenu).each(function(index,item){
            var url = item.url || 'javascript:void(0)';

subLi = $('<li><a href="'https://www.jb51.net/article/+url+'">'+item.name+'</a></li>');
            if(item.submenu && item.submenu.length > 0) {

$(subLi).children('a').prepend('<img src="https://www.jb51.net/images/blank.gif" alt=""/>');
                callee(item.submenu, subLi);
            }
            $(subUl).append(subLi);
        });
        $(lihtml).append(subUl);
    },
    /**
     * 处理层级缩进
     */
    _levelIndent: function(ulList){
        var self = this,
            _config = self.config,
            _cache = self.cache,
            callee = arguments.callee;

        var initTextIndent = 2,
            lev = 1,
            $oUl = $(ulList);

        while($oUl.find('ul').length > 0){
            initTextIndent = parseInt(initTextIndent,10) + 2 + 'em';
            $oUl.children().children('ul').addClass('lev-' + lev)
                        .children('li').css('text-indent', initTextIndent);
            $oUl = $oUl.children().children('ul');
            lev++;
        }
        $(ulList).find('ul').hide();
        $(ulList).find('ul:first').show();   
    },
    /**
     * 绑定事件
     */
    _bindEnv: function(container) {
        var self = this,
            _config = self.config;