//封装getClass 
      function getClass(tagName,className) //获得标签名为tagName,类名className的元素 
      { 
        if(document.getElementsByClassName) //支持这个函数 
        {    return document.getElementsByClassName(className); 
        } 
        else 
        {    var tags=document.getElementsByTagName(tagName);//获取标签 
          var tagArr=[];//用于返回类名为className的元素 
          for(var i=0;i < tags.length; i++) 
          { 
            if(tags[i].class == className) 
            { 
              tagArr[tagArr.length] = tags[i];//保存满足条件的元素 
            } 
          } 
          return tagArr; 
        } 
      } 

<ul>
  <li class="dicTap">1</li>
  <li class="dicTap">2</li>
  <li class="dicTap">3</li>
  <li class="dicTap">4</li>
</ul>     

window.onload = function()
{  var topMenus = getClass('li','dicTap');
  for(var i=0;i < topMenus.length; i++)
  {
    alert(topMenus[i].innerHTML);    
  }

}

//点击的  自定义属性personid，打开详情页面并且进行跨页面传值 
      var dicTap = getClass('li','dicTap'); 
        for(var i=0;i <dicTap.length; i++) 
        { 
          dicTap[i].addEventListener('tap',function(){ 
            var personId=this.getAttribute("personid"); 
            localStorage.a=personId; 
            mui.openWindow({ 
            url: 'disciplineDetail.html', 
            id:'disciplineDetail' 
            }); 
          }) 
        } 
 
      //封装getClass 
      function getClass(tagName,className) //获得标签名为tagName,类名className的元素 
      { 
        if(document.getElementsByClassName) //支持这个函数 
        {    return document.getElementsByClassName(className); 
        } 
        else 
        {    var tags=document.getElementsByTagName(tagName);//获取标签 
          var tagArr=[];//用于返回类名为className的元素 
          for(var i=0;i < tags.length; i++) 
          { 
            if(tags[i].class == className) 
            { 
              tagArr[tagArr.length] = tags[i];//保存满足条件的元素 
            } 
          } 
          return tagArr; 
        } 
      }