Question

我正在尝试从success.jsp自动重定向到feedbackform.jsp，当组合框值更改并将所选值发送到feedbackform.jsp时。但我很困惑，没有得到如何做到这一点。到目前为止我做了什么 -

此代码在success.jsp

上

<script>
function myFunction() {
    var x = document.getElementById("mySelect").value;
    document.getElementById("demo").innerHTML = "You selected: " + x;
}
</script>
</head>
<body>
        <h1><center>Feed Back System</center></h1>
        <center>
<%
if ((session.getAttribute("userid") == null) || (session.getAttribute("userid") == "")) {
%>
<font size='4' color='red'>You are not logged in</font><br/>
<a href="index.jsp">Please Login</a>
<%} else {
%>
<p class="member">Welcome <%=session.getAttribute("userid")%>, you are from semester <%=session.getAttribute("category")%></p>
<a href='logout.jsp'>Log out</a>
<%
    }
    Class.forName("com.mysql.jdbc.Driver");
    Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/feedback","root", "");
    Statement st = con.createStatement();
    ResultSet rs;
    rs = st.executeQuery("select * from faculty");
%>
<form method="post" name="myform" action="feedbackform.jsp">
<table width="480" border="0">
  <tr>
    <td colspan="3"><font color="#00FFCC" size="4">Tip :- &ldquo;Select 1 for excellent 2 for better 3 for good 4 for poor&rdquo;</font></td>
  </tr>
  <tr><td>&nbsp;</td></tr>
  <tr>
    <td width="151" class="member">Select Faculty</td>
    <td width="264" colspan="2"><select id="mySelect" onchange="myFunction()">
        <%  while(rs.next()){ %>
            <option><%= rs.getString(2)%></option>
        <% } %>
        </select>
    </td>
    </tr>
</table>
</form>
        <p id="demo"></p>
        </center>

现在在这里，我被困住了如何在下拉时重定向＆＃34; mySelect＆＃34;价值变化。请指导我。感谢所有人提前回复。

Answer 1

在java脚本中更改myFunction（）代码

<script>
function myFunction() {
var x = document.getElementById("mySelect").value;
var y = "your value";
document.getElementById("demo").innerHTML = "You selected: " + x;
window.location = "http://www.yoururl.com"; //redirect normally on changes

/* you can also check select value with condition and redirect like this 
if (X.toLowerCase() === y.toLowerCase())
{
  window.location = "http://www.yoururl.com";
}
*/

}
</script>

如何在组合框值更改时自动重定向下一个jsp页面

1 个答案: