<!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>?<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> ??<script type="text/javascript">?var picArr=new Array("1.jpg","2.jpg","3.jpg","4.jpg","5.jpg");?var index=0;?function next(){?? ? index++;?? ? if(index==picArr.length){?? ??? ? i=0;?? ? }?? ? document.getElementById("ol").src=picArr[index];?}?</script>?? ? ?? ?</head><body>? <img? id="ol" src="1.jpg" width="500" height="300"/></br><input type="button" value="下一張" onclick="next"/><input type="button" value="上一張" onclick=""/></body></html>
這段代碼為什么沒(méi)有反應(yīng)？
慕先生0450854
2016-07-07 17:53:03