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js实现图片轮换效果代码

2013-04-16 00:00 751 查看
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<title></title> 
<script type="text/javascript"> 
var numb = 0; 
var imgnumb = 1; 
function showimg() { 
//两张图片切换方法1 /*numb++; 
if (numb % 2 == 0) { 
document.getElementById('img1').setAttribute('src', 'images/1.jpg'); 
} 
else { 
document.getElementById('img1').setAttribute('src', 'images/2.jpg'); 
}*/ 
//两张图片切换方法2 /*if (numb == 0) { 
document.getElementById('img1').setAttribute('src', 'images/2.jpg'); 
numb = 1; 
} 
else { 
document.getElementById('img1').setAttribute('src', 'images/1.jpg'); 
numb = 0; 
}*/ 
} 
/图片轮换/多张 function imgfor() { 
imgnumb++; 
document.getElementById('img1').setAttribute('src', 'images/' + imgnumb + '.jpg'); 
if (imgnumb == 9) { 
imgnumb = 0; 
} 
} 
var clearid; 
function clearfun() { 
clearInterval(clearid); 
} 
clearid=setInterval(imgfor, 1000); 
</script> 
</head> 
<body> 
<img alt="" id="img1" class="style1" src="images/1.jpg" width="500px" height="500px" /> 
<input type="button" value="两张图片切换" onclick="showimg();" /> 
<br /> 
<input type="button" value="多张图片轮换" onclick="imgfor();;" /> 
<br /> 
<input type="button" value="结束执行" onclick="clearfun();" /> 
</body> 
</html>
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