JSON 무한 접기 메뉴 작성 example_javascript 기술

/**
 * JSON无限折叠菜单
 * @constructor {AccordionMenu}
 * @param {options} 对象
 * @date 2013-12-13
 * @author tugenhua
 * @email 879083421@qq.com
 */

 function AccordionMenu(options) {
    this.config = {
        containerCls        : '.wrap-menu',                // 外层容器
        menuArrs            :  '',                         //  JSON传进来的数据
        type                :  'click',                    // 默认为click 也可以mouseover
        renderCallBack      :  null,                       // 渲染html结构后回调
        clickItemCallBack   : null                         // 每点击某一项时候回调
    };
    this.cache = {

    };
    this.init(options);
 }

 AccordionMenu.prototype = {

    constructor: AccordionMenu,

    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 = $('

');
        $(_config.menuArrs).each(function(index,item){
            var lihtml = $('

'+item.name+'

');

            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 = $('

'),
            callee = arguments.callee,
            subLi;

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

            subLi = $('

'+item.name+'

');
            if(item.submenu && item.submenu.length > 0) {

                $(subLi).children('a').prepend('');
                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;

$('h2,a',container).unbind(_config.type);
$('h2,a',container).bind(_config.type,function(e){
if ($(this).siblings('ul').length > 0) {
                           $(this).siblings('ul').slideToggle('slow').end().children('img' ).toggleClass('펼침');
     }

                                                                                                             ~ .');
_config.clickItemCallBack && $.isFunction(_config.clickItemCallBack) && _config.clickItemCallBack($(this));

});

}
};

$(function(){
new AccordionMenu( {menuArrs:testMenu});
});