参考下本人写的
<!DOCTYPE HTML>
<html >
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>数组</title>
<script type="text/javascript">
//创建数组
var arr = ['*',"##","***","&&","****","##*"];
arr[7] = "**";
//显示数组长度
document.write(arr.length+"<br>");
//alert(arr.length);
//将数组内容输出，完成达到的效果。
for(var i=0;i<6;i++){
if(i==1){
document.write(arr[7]+"<br>");
}
if(i%2==0){
document.write(arr[i]+"<br>");
}
}
</script>
</head>
<body>
</body>
</html>
