是不是这样？
a.html
=========================
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
<script language="javascript">
function newwindow()
{
window.open("b.html","child");
}
function freshcurrentwin()
{
document.write("<html>");
document.write("<head>");
document.write("<script>");
document.write("function get(){var a=window.open('javascript:void()','child');alert(a.document.getElementById('a').value);}");
document.write("</sc"+"ript>");
document.write("</head>");
document.write("<body>");
document.write("<input type='button' value='刷新后得到子窗口引用' onclick='get()'>");
document.write("</body>");
document.write("</html>");
}
</script>
</HEAD>
<BODY>
<input type="button" onclick="newwindow()" value="open"/><input type="button" value="fresh" onclick="freshcurrentwin()"/>
</BODY>
</HTML>
b.html
==================
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD>
<BODY>
<input type="text" id="a" value="123456"/>
</BODY>
</HTML>
不过出错了。。不知道为啥
