请问这样写有错吗？为什么提交老失败？
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Array对象 </title>
<script type="text/javascript">
var myarr1= new Array("010");
var myarr2= new Array("-","84697581");
var myarr3= myarr1.concat(myarr2);
document.write(myarr3);
</script>
</head>
<body>
</body>
</html>
