09月22日, 2014 2172次
<script> function getRandomArrayElements(arr, count) { //数组随机取值 var shuffled = arr.slice(0), i = arr.length, min = i - count, temp, index; while (i-- > min) { index = Math.floor((i + 1) * Math.random()); temp = shuffled[index]; shuffled[index] = shuffled[i]; shuffled[i] = temp; } return shuffled.slice(min); } var items = [ "http://www.taobao.com", "http://www.taobao.com", "http://www.taobao.com", "http://www.taobao.com", "http://www.taobao.com", "http://www.baidu.com" ]; window.onload= function() { var opres= getRandomArrayElements(items, 4) ; var i =1; for (x in opres) //循环创建iframe { //document.write(opres[x] + "<br />"); var iframe = document.createElement("iframe"); iframe.src=opres[x] ; iframe.className="frame"; iframe.id="iframe"+i; iframe.width ="800px"; iframe.height ="400px"; document.body.appendChild(iframe); i++; } } setTimeout("self.location.reload();",15000); //定时刷新 </script>
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