为什么document.write 要写在这个地方 而不是最后
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>二维数组</title>
<script type="text/javascript">
var myarr=new Array();
for(var i=1;i<4;i++)
{
myarr[i]=new Array();
for(var j=1;j<6;j++)
{
myarr[i][j]=i*j;
document.write("myarr["+i+"]["+j+"]的值:"+myarr[i][j]+"<br>");
}
}
</script>
</head>
<body>
</body>
</html>
