用for循环做出一些效果 

<!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" />
<title></title>
<style>
 div{
  width: 50px;
  height: 50px;
  line-height: 50px;
  text-align: center;
  border: 1px solid red;
  background: red;
  position: absolute;

 }
</style>
<script>
 window.onload = function(){
  var oDiv = document.getElementsByTagName('div');
  for(var i=0;i<20;i++){
   document.body.innerHTML +='<div>'+i+'</div>';
  }
  for (var i = 0; i < oDiv.length+1; i++) {
   j = oDiv.length - i;
   if(i<10){
    oDiv[i].style.left = 50*i+'px';
    oDiv[i].style.top = 50*i+'px';
   }else{
    oDiv[i].style.left = 50*i+'px';
    oDiv[i].style.top = 50*j+'px';
   }
  }
 };
</script>
</head>
 
<body>
    
</body>
</html>

 

posted @ 2014-12-02 16:02  人间最美二月天  阅读(143)  评论(0)    收藏  举报