<script type="text/javascript">
//<!CDATA[
var pic = [];
pic[0] = "链接";
pic[1] = "链接";
pic[2] = "链接";
pic[3] = "链接";
var randomBgIndex = Math.round( Math.random() * 3 );
//输出随机的背景图
//document.write('<style>body{background:url(' + bodyBgs[randomBgIndex] + ') no-repeat 50% 0}</style>');
document.write("<img src=" + pic[randomBgIndex] + " width='400'>")
//]]>
</script>
标签:body,randomBgIndex,repeat,javaScript,随机,图片 From: https://www.cnblogs.com/xkboi/p/16990481.html