<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
.container {
float: left;
font-size: 32px;
}
.container span {
display: inline-block;
width: 32px;
}
</style>
</head>
<body>
<!--<div class="container">
<script type="text/javascript">
for(var i=0;i<4;i++){
//输出空格
for(var j=0;j<4-i-1;j++){
document.write("<span></span>");
}
//输出*
for(var j=0;j<2*i+1;j++){
document.write("<span>*</span>");
}
//换行
document.write("<br/>");
}
for(var i=0;i<3;i++){
//输出空格
for(var j=0;j<i+1;j++){
document.write("<span></span>");
}
//输出*
for(var j=0;j<5-2*i;j++){
document.write("<span>*</span>");
}
//换行
document.write("<br/>");
}
</script>
</div>-->
<script type="text/javascript">
for(var x = 0; x < 30; x++) {
document.write("<div class=‘container‘>");
for(var i = -3; i <= 3; i++) {
var absi = Math.abs(i);
for(var j = 0; j < absi; j++) {
document.write("<span></span>");
}
for(var j = 0; j < 7 - 2 * absi; j++) {
if(j==0||j==7-2*absi-1)
document.write("<span>*</span>");
else
document.write("<span></span>");
}
document.write("<br/>");
}
document.write("</div>")
}
</script>
</body>
</html>
JS菱形镂空
原文地址：http://www.cnblogs.com/yan-linxi/p/8056983.html