js中实现子页面向父页面中赋值

(方法一)
父页面:
<input  />
<a href="javascript:window.open('test1.aspx');void(0)">弹出新的子窗口</a>
子页面:
<input  />
<input />
<script type="text/javascript" language="javascript">
function doit()
{
  var _value=document.getElementByIdx('input2').value;
  window.opener.document.getElementByIdx('input1').value=_value;
}
</script>
 
(方法二)
父页面:
<input  />
<a href="javascript:GetReturnValue();void(0)">弹出新的模态子窗口</a>
<script type="text/javascript" language="javascript">
 function GetReturnValue()
 {
     var temp= window.showModalDialog("test1.aspx","","center=yes;help=no;status=no");
     document.getElementByIdx('input1').value = temp;
 }
</script>
子页面:
<input  />
<input />
<script type="text/javascript" language="javascript">
function doit()
{
  var _value=document.getElementByIdx('input2').value;
  window.returnValue =_value;
  window.close();
}
</script>
转载地址：http://blog.sina.com.cn/s/blog_586b6c0501008h9o.html