<td><input type="button" value="更新" onclick="a(<%=rs.getString("sno")%>)"/></td>
<script>
function a(sno){
window.location.href="11.jsp?sno="+sno;
}
</script>

我另一个想要传递的值为tno

<td><input type="button" value="更新" onclick="a(<%=rs.getString("sno")%>, <%=rs.getString("tno")%>)"/></td>
<script>
function a(sno,tno){
window.location.href="11.jsp?sno="+sno + "&tno=" +tno;
}
</script>

问题解决的话，请点下采纳

最好还是加个引号，sno和tno是非数字会报错。onclick="a('<%=rs.getString("sno")%>', '<%=rs.getString("tno")%>')"