<div id="div1">111</div><div id="div2">現(xiàn)實</div><div id="div3">層</div><div class="tab">  <ul class="tab_nav clearfix">   <li class="active">1</li>   <li>2</li>   <li>3</li>  </ul>  <div class="tab_main">   <div style="display: block">內(nèi)容1</div>   <div>內(nèi)容2</div>   <div>內(nèi)容3</div>  </div></div>

#div1{width: 100px;height: 100px;background: #ccc;}#div2{width:100px;height: 20px;background: red;}#div3{width: 300px;height: 200px;border: 1px solid #ccc;position: absolute;;margin-left: -150px;margin-top:-100px;left:50%;top: 50%;display: none;}li{width: 100px;float: left;background: #ccc;}.active{background: red;}.tab_main{display: none;}.clearfix:after{clear: both;display: table;content:'';}.cleafix{zoom:1;}

var namespace={ int:function(){  this.hide.hideFun();  this.show.showFun();  this.tab.tabFun(); }};namespace.hide={ hideBtn:$('#div1'), hideFun:function() {  var that=this;  var a=this.hideBtn;  a.click(function() {   $(this).hide();  }); }};namespace.show={ showBtn:$('#div2'), showBox:$('#div3'), showFun:function(){  var that=this;  var a=this.showBtn;  var b=this.showBox;  a.click(function(event) {   b.show();  }); }}namespace.tab={ tabBtn:$('.tab_nav li'), tabCon:$('.tab_main div'), tabFun:function(){  var that=this;  var a=this.tabBtn;  var b=this.tabCon;  a.click(function() {   $(this).addClass('active').siblings().removeClass('active');   b.eq($(this).index()).show().siblings().hide();  }); }}namespace.int();