1 <script language =javascript > 
 2 var curIndex=0; 
 3 //時間間隔 單位毫秒 
 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" />

簡單的圖片切換代碼（無按鈕）