javascript读取asp中值的问题~~~~~

xdjm们问个问题，我在asp中 <%%>生成了一个数据数组，比如说shidu(1)=1,2,3,4    然后我想把这个值传递给javascript中的一个函数去，如 var num = 1; str = <%=shidu(num)%>发现这样得不到数据，这是为什么？谢！
代码如下：
<%
dim i,str,nodeNum
nodeNum = 10
dim wendu(),shidu(),gz(),dy()
redim wendu(nodeNum)
redim shidu(nodeNum)
redim gz(nodeNum)
redim dy(nodeNum)
ConnStr = "Driver={SQL Server};Server=(Local);UID=sa;PWD=11111111;database=earth;"
Set conn = Server.CreateObject("ADODB.Connection")
conn.open ConnStr
set rs=server.CreateObject("adodb.recordset")
for i=1 to 2
sql="select top 10 sdData from [Humidity] where nodeId = "&i&"  order by sdId desc"
rs.open sql,conn,1,3
if not rs.eof then
do while not rs.eof
wendu(i) = rs("sdData")&","&wendu(i)  //形成wendu数组
'str = rs("sdData")&str
rs.movenext
loop
rs.close()
end if
wendu(i) = left(wendu(i),len(wendu(i))-1)
response.Write(wendu(i))
response.Write(" <br>")
next
conn.close()
%>
<Script>
var num = 1;
var str = " <%=wendu(num)%>";
alert(str);