JSFiddle - React, Tailwind, and code Playground

HTML

<h1>輪播廣告</h1> 
<div id="ad"></div>

JavaScript

//廣告的資料
var adData = [    {img:'http://lh3.ggpht.com/UYX3ro5qLZDMyInieR4avSQsmpDVRlbNId4jpGWNzC3sYBh9Ayz1LAoRJciQGECucWXNb0Fzck4VtDqUvvQpLStCA6z2OlwivM09gELP',link:'http://www.google.com/doodles/first-day-of-summer-2013'},
{img:'http://lh6.ggpht.com/-piIYxGNeFjvr5FUYpNQyYTAvDSoqizlbmdkfWCXXkVoLosT3dZ77nl_tujI8_hLiUwY_SbMS4l7FynmTJWSSjH_0uDWwMLF2WGbgfqA',link:'http://www.google.com/doodles/50th-anniversary-of-the-i-have-a-dream-speech'},
 {img:'http://www.google.com/logos/2010/manuel-de-falla10-hp.gif',link:'http://www.google.com/doodles/134th-birthday-of-manuel-de-falla'},
{img:'http://www.google.com/logos/2012/olympics-archery-2012-hp.jpg',link:'http://www.google.com/doodles/archery-2012'}
];

//廣告播放器  
  var AdPlayer = function(adPlaceHolder,adData) {
      var currentElm;
      var placeHolder;
      var adList;
      
      placeHolder = document.getElementById(adPlaceHolder); 
      adList = adData;
      renderAd();

      this.start = function(){
	getAd();
	setInterval(function(){
	  hideAd();
	  getNewAd();
	},3000);
      }


     //產生廣告元素
      function renderAd(){
        var template = '<div id="ad-{{no}}" style="display:none"><a href="{{url}}" rel="nofollow"><img src="{{imgPath}}" border="0" width="335" /></a></div>';

	for(var i=0; i<adList.length; i++) {
	  var adContent = placeHolder.innerHTML;
          var temp = template;
	      temp = temp.replace(/{{no}}/,i);	
	      temp = temp.replace(/{{url}}/,adList[i].link);	
	      temp = temp.replace(/{{imgPath}}/,adList[i].img);	
          adContent += temp;
	  placeHolder.innerHTML = adContent;
	}
      }
      
     //改變廣告的狀態
     function getAd(){
        var no = getRandomNo();
        currentElm = document.getElementById("ad-"+ no);   
        currentElm.style.display = "block"; 
     }

     var getNewAd = getAd;

     function hideAd(){
        currentElm.style.display = "none"; 
     }
     
     //亂數播放廣告號碼
      function getRandomNo(){
       var size = adList.length; 
       var no =...