利用JAVASCRIPT制作简单动画

如果你需要改变动画播放速度,

　　比如每5秒换一张图片

　　改变setTimeout("imgturn('" +numb+ "')", 1000)中的1000为5000

＜html>
＜head>
＜title>＜/title>
＜script language="JavaScript">
＜!--
//请先准备几张JPG图片格式的,名字是demo1.jpg,demo2.jpg,demo3.jpg
if (document.images) {
demo1 = new Image();
demo1.src = "../../images/demo1.jpg";
demo2 = new Image();
demo2.src = "../../images/demo2.jpg";
demo3 = new Image();
demo3.src = "../../images/demo3.jpg";
}
function timeimgs(numb) {
thetimer = setTimeout("imgturn('" +numb+ "')", 1000);
}
function imgturn(numb) {
if (document.images) {
if (numb == "3") {
document["demo"].src = eval("demo3.src");
timeimgs('1');
}
else { document["demo"].src = eval("demo" + numb + ".src");
timeimgs(numb = ++numb);
}
}
}
// -->
＜/script>
＜/head>
＜body onload="timeimgs('2');">
＜img src="../../images/demo1.jpg" name="demo" width="100" height="100" alt="demo">