JavaScript小问题

刚学  有些问题
数组的
<html>
<head>
<title>123</title>
<script   language="JavaScript">
var array=[new arr("a","a"),new arr("b","b"),"afa"]
for(var i=0;i<array.length;i++){   alert(array[i]);
}
function arr(age,name){
  this.age=age;
  this.name=name;
  this.toString=toString;
}</script>
</head>
<body></body>
</html>
怎么把数组里对象arr的值取出来  谢谢各位