用原生js做单页应用

<div class="wrap">
 <div id="Brand">
  <div>品牌</div>
   <ul class="mycar_hot_list">
    <li>
     <p>大众</p>
    </li>
   </ul>
  </div>
  <div id="Type" style="display:none">
   <dl>
   <dt>比亚迪汽车</dt>
   <dd>宋</dd>
  </dl>
 </div>
 <div id="Series" style="display:none">
  <ul class="mycar_datalist">
    <li>
     2013年款
    <li>
  </ul>
 </div>
</div>

info={
      brand:'',
      carType:'',
      carSeries:'',
      pages:['Brand','Type','Series'] 
    };
info.selectBrand=function(){
   document.title = '选择商标';
   brandEvent();
}
//选择车型
info.selectType=function(){
   document.title = '选择车型';
   document.body.scrollTop = 0; //滚到顶部
    window.scrollTo(0, 0);
    typeEvent(); //为该模块的dom绑定事件或做其他逻辑
}
//选择车系
info.selectSeries=function(){
   document.title = '选择车系';
   document.body.scrollTop = 0;
   window.scrollTo(0, 0);
   seriesEvent();
}

 function brandEvent(){
//绑定跳转
  $('#Brand ul li').click(function(){
    info.brand=$(this).find('p').text();
    goPage('Type');
  })
 }
 function typeEvent(){
//绑定跳转
  $('#Type dd').click(function(){
    info.carType=$(this).text();
    goPage('Series');
  })
 }
 function seriesEvent(){...}

function goPage(tag) {
  if ((tag == 'Brand')&&(location.hash.indexOf('Type')!=-1)){ // 后退操作
      history.back();
      document.title = '选择商标'; 
  }else if ((tag == 'Type')&&(location.hash.indexOf('Series')!=-1)){
      history.back();
      document.title = '选择车型';
  }else {
    location.hash = tag;
  }
}

window.onload=function(){
    info.selectBrand(); //为默认显示的模块中的元素绑定相应的事件及其他逻辑
    $(window).on("hashchange", function (e) {
      doHashChange();
    });
}

function doHashChange(){
  //获取hash的值
  var hash = location.hash.split('|')[0],
    tag = hash.replace(/#/g, '');
  if (info.pages.indexOf(tag) == -1) {
    tag = 'Brand';
  }
  $('.wrap').children('div').hide();  
  //执行每个模块不同的方法
  if(typeof(info['select' + tag]) == "function"){
    info['select' + tag]();
  }
  //展示对应dom
  $('#' + tag).show();
}