无限级下拉菜单,使用json数据,拼接ul和li来实现的。
效果图:1.准备json数据:
无限级下拉菜单,使用json数据,拼接ul和li来实现的。
效果图:1.准备json数据:
var menuData = [ {id:0,pid:-1,name:"订购产品",url:"",children:[ {id:1,pid:0,name:"电脑配件",url:"http://www.jb51.net",children:[ {id:20,pid:1,name:"cpu",url:"http://www.jb51.net",children:[ {id:30,pid:20,name:"Intel",url:"http://www.jb51.net",children:[ {id:3000,pid:30,name:"Intel 01",url:""}, {id:3001,pid:30,name:"Intel 02",url:""}, {id:3002,pid:30,name:"Intel 03",url:""}, {id:3003,pid:30,name:"Intel 04",url:""}, {id:3004,pid:30,name:"Intel 05",url:""}, {id:3005,pid:30,name:"Intel 06",url:""}, {id:3006,pid:30,name:"Intel 07",url:""}, {id:3007,pid:30,name:"Intel 08",url:""}, {id:3008,pid:30,name:"Intel 09",url:""} ]}, {id:31,pid:20,name:"AMD",url:"http://www.jb51.net",children:[ {id:3100,pid:31,name:"AMD 01",url:""}, {id:3101,pid:31,name:"AMD 02",url:""}, {id:3102,pid:31,name:"AMD 03",url:""}, {id:3103,pid:31,name:"AMD 04",url:""}, {id:3104,pid:31,name:"AMD 05",url:""}, {id:3105,pid:31,name:"AMD 06",url:""}, {id:3106,pid:31,name:"AMD 07",url:""}, {id:3107,pid:31,name:"AMD 08",url:""}, {id:3108,pid:31,name:"AMD 09",url:""} ]} ]}, {id:21,pid:1,name:"内存",url:"http://www.jb51.net"}, {id:22,pid:1,name:"硬盘",url:"http://www.jb51.net"}, {id:23,pid:1,name:"主板",url:"http://www.jb51.net"}, {id:24,pid:1,name:"显卡",url:"http://www.jb51.net"}, {id:25,pid:1,name:"显示器",url:"http://www.jb51.net"}, {id:26,pid:1,name:"主机箱",url:"http://www.jb51.net"}, {id:27,pid:1,name:"主机箱电源",url:"http://www.jb51.net"}, {id:28,pid:1,name:"键鼠(有线)",url:"http://www.jb51.net"}, {id:29,pid:1,name:"键鼠(无线)",url:"http://www.jb51.net"} ],url:"http://www.jb51.net"}, {id:101,pid:0,name:"监控器材",children:[ {id:102,pid:101,name:"摄像头",url:"http://www.jb51.net"}, {id:103,pid:101,name:"摄像头",url:"http://www.jb51.net"}, {id:104,pid:101,name:"摄像头",url:"http://www.jb51.net"}, {id:112,pid:101,name:"摄像头",url:"http://www.jb51.net"}, {id:113,pid:101,name:"摄像头",url:"http://www.jb51.net"}, {id:114,pid:101,name:"摄像头",url:"http://www.jb51.net"}, {id:115,pid:101,name:"摄像头",url:"http://www.jb51.net"}, {id:116,pid:101,name:"摄像头",url:"http://www.jb51.net"}, {id:117,pid:101,name:"摄像头",url:"http://www.jb51.net"} ],url:"http://www.jb51.net"}, {id:201,pid:0,name:"数码产品",children:[ {id:202,pid:201,name:"摄像头",url:"http://www.jb51.net"} ],url:"http://www.jb51.net"}, {id:301,pid:0,name:"网络产品",children:[ {id:302,pid:301,name:"摄像头",url:"http://www.jb51.net"} ],url:"http://www.jb51.net"}, {id:401,pid:0,name:"打印耗材",children:[ {id:402,pid:401,name:"打印机",url:"http://www.jb51.net"}, {id:403,pid:401,name:"油墨",url:"http://www.jb51.net"}, {id:404,pid:401,name:"纸张",url:"http://www.jb51.net"}, {id:405,pid:401,name:"摄像头",url:"http://www.jb51.net"}, {id:406,pid:401,name:"摄像头",url:"http://www.jb51.net"}, {id:407,pid:401,name:"摄像头",url:"http://www.jb51.net"}, {id:408,pid:401,name:"摄像头",url:"http://www.jb51.net"} ],url:"http://www.jb51.net"} ]}, {id:1000,pid:-1,name:"我的订单",url:"",children:[ {id:1001,pid:1000,name:"已过期订单",url:""}, {id:1001,pid:1000,name:"已付款订单",url:""} ]}, {id:2000,pid:-1,name:"公司信息",url:"",children:[ {id:2001,pid:2000,name:"最新新闻",url:""}, {id:2002,pid:2000,name:"公司地址",url:""} ]} ];
<div id="menu"><ul id="baseMenu"></ul></div>
3.解析json数据(plugin-menu.js文件):刚学会写jquery插件,写的还比较乱,凑合着看吧。
(function($){ $.fn.extend({ menu:function(options){ var defaults = { data:[], ulId:"baseMenu" }; var options = $.extend(defaults, options); // 开始拼接ul,li $.each(options.data,function(i,v){ var li = $("<li id='"+options.data[i].id+"' name='"+options.data[i].pid+"'></li>"); var _a = $("<a>"+options.data[i].name+"</a>"); _a.attr("href",options.data[i].url) .appendTo(li); _each(options.data[i],li); li.appendTo($("#"+options.ulId)); }); // 给li添加事件 $(this).find("li").hover(function(){ var id = $(this).attr("id"); $(this).find("ul[name='"+id+"']").show(); },function(){ var id = $(this).attr("id"); $(this).find("ul[name='"+id+"']").hide(); }); } }); })(jQuery);
因为支持无限级,所以肯定会用到递归方法:
function _each(data,li){ if(data==undefined||data.children==undefined){ return false; } var ul = $("<ul name='"+data.id+"' style='display:none;'></ul>"); $.each(data.children,function(i,v){ var _li = $("<li id='"+data.children[i].id+"' name='"+data.children[i].pid+"'></li>"); var _a = $("<a>"+data.children[i].name+"</a>"); _a.attr("href",data.children[i].url) .attr("target","_blank") .appendTo(_li); if(data.children[i].children!=undefined){ _each(data.children[i],_li); } _li.appendTo(ul); }); ul.appendTo(li); }
4.调用插件:
$(function() { $("#menu").menu({data:menuData,ulId:"baseMenu"}); });
最后,css样式:
ul,li{list-style:none;padding:0px;margin:0px;} #menu *{line-height:30px;} #menu a{text-decoration:none;} #menu ul{text-align:left;} #menu>ul>li{text-align:center;width:80px;float:left;} #menu>ul>li>a{color:#000;} #menu>ul>li:hover{background:#F0F0F0;} #menu>ul>li ul{display:none;width:150px;position:absolute;background:#c1cd94;box-shadow:2px 2px 2px #000;-webkit-box-shadow:2px 2px 2px #000; -moz-box-shadow:2px 2px 2px #123;} #menu>ul>li>ul li{padding-left:5px; position:relative;} #menu>ul>li>ul li>a{color:#000;} #menu>ul>li>ul li:hover{background:#d3dbb3;} #menu>ul>li>ul>li ul{left:150px; top:0px;}
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