怎样用JS实现打开一个新生成的页面

你的第一个页面：
<script language="javascript" type="text/javascript">
var popu = null;
function preview()
{
var handle = window.open("./n2.html","preview","toolbar=no,width=400,height=300,location=no,resize=no");
var popu = handle.opener();
}
</script>
</HEAD><BODY>
<FORM METHOD=POST ACTION="" name="form1">
name<INPUT TYPE="text" id="name" NAME="name" value="Uname">
title<INPUT TYPE="text" id="title" NAME="title" value="yourtitle">
depart<INPUT TYPE="text" id="depart" NAME="depart" value="Udepartment">
<INPUT TYPE="button" NAME="" value="Pre-view" onclick="preview();">
</FORM>
</BODY>
</HTML>你的预览页面
<script language="javascript" type="text/javascript">
function showit()
{
var name = document.getElementById("pname");
var title = document.getElementById("ptitle");
var depart = document.getElementById("pdepart");
name.innerText = window.opener.document.getElementById("name").value;
title.innerText = window.opener.document.getElementById("title").value;
depart.innerText = window.opener.document.getElementById("depart").value;
}
</script>
</HEAD><BODY onload="showit();">
<TABLE width="50%" align="center" border="1">
<TR>
<TD width="30%">name</TD>
<TD id="pname">&nbsp;</TD>
</TR>
<TR>
<TD>title</TD>
<TD id="ptitle">&nbsp;</TD>
</TR>
<TR>
<TD>department</TD>
<TD id="pdepart">&nbsp;</TD>
</TR>
</TABLE>
</BODY>
</HTML>