<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-2.1.0.min.js"></script>
<meta charset="utf-8">
<title>js demo</title>
<script>
var carname ="volvo";
var a =new Array();
for(i=0;i<4;i++)
{
a[i] = new Array();
for (j=0;j<4;j++)
a[i][j] = Math.floor(Math.random() * 5);;
}
console.log(a);
</script>
</head>
<body>
<div></div>
<p id="demo"></p>
</body>
</html>
转载于:https://my.oschina.net/xmanjn/blog/263136