简单的图片切换代码（无按钮）

 1 <script language =javascript >
 2 var curIndex=0;
 3 //时间间隔 单位毫秒
 4 var timeInterval=5000;
 5 var arr=new Array();
 6 arr[0]="1.jpg";
 7 arr[1]="2.jpg";
 8 arr[2]="3.jpg";
 9 arr[3]="4.jpg";13 setInterval(changeImg,timeInterval);
14 function changeImg()
15 {
16 var obj=document.getElementById("xuanchuanPic");
17 if (curIndex==arr.length-1)
18 {
19 curIndex=0;
20 }
21 else
22 {
23 curIndex+=1;
24 }
25 obj.src="images/"+arr[curIndex];
26 }
27 </script>
28 <img src="image/1.jpg"id="xuanchuanPic" />