基于JavaScript实现带小图标交互的图片轮播特效

<!DOCTYPE html>
<html>
<head lang="en">
 <meta charset="UTF-8">
 <title>带小图标的JS图片轮换</title>
 <style type="text/css">
  *{
   margin: 0px;
   padding: 0px;
  }
  #content{
   width: 700px;
   height: 538px;
   margin: 0px auto; /*使所有内容居中*/
   border: solid #F0F0F0;
  }

  /*定义下面小图标处样式*/
  #nav1 table{
   width: 100%;
   height: 35px;
   margin-top: -4px;
  }
  #nav1 td{
   width: 35px;
   height: 35px;
   text-align: center; /*文字居中*/
   color: #ffffff;
  }
  #text{

  }
  #_text{
   width: 100%;
   height: 100%;
   background-color: #F0F0F0;
   border: none;
   text-align: center;
   font-size: 18px;
   color: #000000;
   font-weight: bold;
  }
 </style>
</head>
<body onload="changeImg()">
 <div id="content">
  <div id="images">
   <img id="_photoes" src="../images/textPhoto/1.jpg" height="500px" width="700px" onmouseover="over1()" onmouseout="out1()">
  </div>
  <div id="nav1">
   <table border="0">
    <tr>
     <td id="text" bgcolor="#F0F0F0" colspan="15"><input type="text" id="_text" readonly></td>
     <td id="img1" class="sImg" bgcolor="#db7093" onmouseover="over2(1)" onmouseout="out2(1)">1</td>
     <td id="img2" class="sImg" bgcolor="#da70d6" onmouseover="over2(2)" onmouseout="out2(2)">2</td>
     <td id="img3" class="sImg" bgcolor="#9acd32" onmouseover="over2(3)" onmouseout="out2(3)">3</td>
     <td id="img4" class="sImg" bgcolor="#adff2f" onmouseover="over2(4)" onmouseout="out2(4)">4</td>
     <td id="img5" class="sImg" bgcolor="#00bfff" onmouseover="over2(5)" onmouseout="out2(5)">5</td>
    </tr>
   </table>
  </div>
 </div>

 <script type="text/javascript">
  //将轮换的大图片放入数组中
  var arr = new Array();
  arr[0] = "../images/textPhoto/1.jpg";
  arr[1] = "../images/textPhoto/2.jpg";
  arr[2] = "../images/textPhoto/3.jpg";
  arr[3] = "../images/textPhoto/4.jpg";
  arr[4] = "../images/textPhoto/5.jpg";

  //将input区域变换的文字放在数组里
  var text = new Array();
  text[0] = "焦点图1";
  text[1] = "焦点图2";
  text[2] = "焦点图3";
  text[3] = "焦点图4";
  text[4] = "焦点图5";

  var smallImg = document.getElementsByClassName("sImg"); //将页面上所有小图片存放在一个数组

  var num = 0;
  function changeImg() {
   document.getElementById("_photoes").src = arr[num];
   document.getElementById("_text").value = text[num];
   //当前小图标增加边框样式
   for(var i=0;i<arr.length;i++) {
    if(i==num) smallImg[num].style.border = "red solid"; //大图标对应的小图标增加边框样式
    else smallImg[i].style.border = "none";
   }
   if (num == arr.length - 1) num = 0; //如果显示的是最后一张图片，则图片序号变为第一张的序号
   else num += 1; //图片序号加一
  }

  var setID = setInterval("changeImg()",1000); //这样写任然会不断调用changeImg()函数

  /*当鼠标滑到大图标上时*/
  function over1() {
   clearInterval(setID); //图片停止轮换
//   smallImg[n-1].style.border = "red solid";
  }

  /*当鼠标离开大图标时*/
  function out1() {
   setID = setInterval("changeImg()",1000);  //图片继续轮换
//   smallImg[n-1].style.border = "none"; //大图标对应的小图标边框样式取消
  }

  /*当鼠标滑到小图标上时*/
  function over2(n) {
   document.getElementById("_photoes").src = arr[n-1]; //只要鼠标滑到小图标上，大图区域就显示对应的图片
   document.getElementById("_text").value = text[n-1];
   clearInterval(setID); //图片停止轮换
   //当前小图标增加边框样式
   for(var i=0;i<arr.length;i++) {
    if(i==n-1) smallImg[n-1].style.border = "red solid";
    else smallImg[i].style.border = "none";
   }
  }

  /*当鼠标离开小图标时*/
  function out2(n) {
   if(n!=arr.length)
    num = n; //从当前图片开始轮换
   else num = 0;
   setID = setInterval("changeImg()",1000);  //图片继续轮换
//   smallImg[n-1].style.border = "none"; //小图标边框样式取消
  }
 </script>
</body>
</html>

//实现几张图片的轮换
var num = 0;  //显示的图片序号，刚开始时是第一张图片
function changeImg1() {
  var arr = new Array();
  arr[0]="../images/hao123/7.jpg";
  arr[1]="../images/hao123/8.jpg";
  arr[2]="../images/hao123/9.jpg";
  var photo = document.getElementById("topPhoto");
  if (num == arr.length - 1) num = 0;  //如果显示的是最后一张图片，则图片序号变为第一张的序号
  else num += 1;  //图片序号加一
  photo.src = arr[num];
}
setInterval("changeImg1()",5000);  //每隔5000毫秒调用一次changImg1()函数