我有两个选择框，称为crop 和variety。通过Ajax 加载的品种选择框取决于crop 的选择，然后渲染到JQueryMobile，它在直接运行该页面时工作，但如果从另一个页面重定向到那个页面各种人口不工作。请帮我...
我的页面 - -
<!--
To change this template, choose Tools | Templates
and open the template in the editor.
-->
<?php
require_once('calendar/classes/tc_calendar.php');
?>
<!DOCTYPE html>
<html>
<head>
<title></title>
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.2.0/jquery.mobile-1.2.0.min.css" />
<script src="http://code.jquery.com/jquery-1.8.2.min.js"></script>
<script src="http://code.jquery.com/mobile/1.2.0/jquery.mobile-1.2.0.min.js"></script>
<script language="javascript" src="calendar/calendar.js"></script>
<link href="calendar/calendar.css" rel="stylesheet" type="text/css">
<!--<script src="jquery.js"></script>-->
</head>
<body>
<script>
$(document).ready(function() {
$("#crop").change(function(){
$.ajax({
type:'GET',
url :'variety.php',
dataType:"json",
data: ({crop: $('#crop').val()}),
success : function(data){
$("#variety").html(data).selectmenu('refresh', true);
},
error : function(data){
// alert("Error"+data);
}
});
});
});
</script>
<script>
function onSuccess(data, status)
{
data = $.trim(data);
$("#notification").text(data);
}
function onError(data, status)
{
// handle an error
}
$(document).ready(function() {
$("#submit").click(function(){
var formData = $("#myform").serialize();
$.ajax({
type: "POST",
url: "offerReq_save.php",
cache: false,
data: formData,
success: onSuccess,
error: onError
});
return false;
});
});
</script>
<?php
session_start();
//$_SESSION["user_id"] = 10;
$_SESSION["type"] = $_GET['type']; //"farmer offer";
$_SESSION["ref"] = $_GET['ref']; //"new";
$_SESSION["ictype"] = $_GET['ictype']; //"crop";
// $_SESSION["usertype"] = "farmer";
$types = $_SESSION["type"];
$con = mysql_connect("localhost", "root", "itemfile");
if (!$con) {
die('Could not Connect:' . mysql_error());
}
mysql_select_db("agropiamob", $con);
$tests = mysql_query("select * from m01_crop_master"); // or die("Note: " . mysql_error());
mysql_close($con);
?>
<section id="page1" data-role="page">
<header data-role="header"><h1>Header</h1></header>
<div data-role="content" class="content">
<form id="myform">
<div data-role="fieldcontain">
<label for="type" class="select">Type :</label>
<select name="type" id="type" data-native-menu="false">
<option value="Product">Product</option>
<option value="Service">Service</option>
<option value="Bank">Bank</option>
<option value="Insurance">Insurance</option>
</select>
</div>
<div data-role="fieldcontain">
<label for="crop" class="select">Crop :</label>
<select name="crop" id="crop" data-native-menu="false"><option selected>Choose an option</option>
<?php
while ($res = mysql_fetch_assoc($tests)) {
$dropdown .= "\r\n<option value='{$res['id']}'>{$res['crop_name']}</option>";
}
echo $dropdown;
//}
?>
</select>
</div>
<div data-role="fieldcontain">
<label for="variety" class="select">Variety :</label>
<select name="variety" id="variety" data-native-menu="false">
</select>
</div>
<div data-role="fieldcontain">
<label id="locationLabel" for="location" class="select">Location :</label>
<input type="text" name="location" id="location">
</div>
<div data-role="fieldcontain">
<label for="terms" class="select">Terms :</label>
<select name="terms" id="terms" data-native-menu="false">
<option value="FOB">FOB</option>
<option value="CIF">CIF</option>
</select>
</div>
<div data-role="fieldcontain">
<!--<input name="mydate" id="mydate" type="date" data-role="datebox" data-options='{"mode": "calbox"}'> -->
<!--<label for="mydate" class="select">Date :</label>-->
<table border="0" cellspacing="0" cellpadding="2">
<tr>
<td nowrap>Date :</td>
<td><?php
$myCalendar = new tc_calendar("mydate", true, false);
$myCalendar->setIcon("calendar/images/iconCalendar.gif");
// $myCalendar->setDate(date('d'), date('m'), date('Y'));//
$myCalendar->setPath("calendar/");
$myCalendar->setYearInterval(2000, 2015);
$myCalendar->dateAllow('2008-05-13', '2015-03-01');
$myCalendar->setDateFormat('j F Y');
$myCalendar->setHeight(350); //
//$myCalendar->autoSubmit(true, "form1");//
$myCalendar->setAlignment('left', 'bottom');
//$myCalendar->setSpecificDate(array("2011-04-01", "2011-04-04", "2011-12-25"), 0, 'year');
//$myCalendar->setSpecificDate(array("2011-04-10", "2011-04-14"), 0, 'month');
//$myCalendar->setSpecificDate(array("2011-06-01"), 0, '');
$myCalendar->writeScript();
?></td>
<!-- <td><input type="button" name="button" id="button" value="Check the value" onClick="javascript:alert(this.form.mydate.value);"></td>-->
</tr>
</table>
</div>
<div data-role="fieldcontain">
<!--<label for="validity">Validity :</label>
<input name="validity" id="validity" type="date" data-role="datebox" data-options='{"mode": "calbox"}'>-->
<table border="0" cellspacing="0" cellpadding="2">
<tr>
<td nowrap>Validity :</td>
<td><?php
$myCalendar = new tc_calendar("validity", true, false);
$myCalendar->setIcon("calendar/images/iconCalendar.gif");
// $myCalendar->setDate(date('d'), date('m'), date('Y'));//
$myCalendar->setPath("calendar/");
$myCalendar->setYearInterval(2000, 2015);
$myCalendar->dateAllow('2008-05-13', '2015-03-01');
$myCalendar->setDateFormat('j F Y');
$myCalendar->setHeight(350); //
//$myCalendar->autoSubmit(true, "form1");//
$myCalendar->setAlignment('left', 'bottom');
//$myCalendar->setSpecificDate(array("2011-04-01", "2011-04-04", "2011-12-25"), 0, 'year');
//$myCalendar->setSpecificDate(array("2011-04-10", "2011-04-14"), 0, 'month');
//$myCalendar->setSpecificDate(array("2011-06-01"), 0, '');
$myCalendar->writeScript();
?></td>
<!-- <td><input type="button" name="button" id="button" value="Check the value" onClick="javascript:alert(this.form.mydate.value);"></td>-->
</tr>
</table>
</div>
<div data-role="fieldcontain">
<label id="payment_termsLabel" for="payment_terms" class="select">Payment Terms :</label>
<input type="text" name="payment_terms" id="payment_terms">
</div>
<div data-role="fieldcontain">
<label for="remarks">Remarks :</label>
<textarea name="remarks" id="remarks" cols="10" rows="3"></textarea>
</div>
<div data-role="fieldcontain">
<label for="freq" class="select">Frequency :</label>
<select name="freq" id="freq" data-native-menu="false">
<option value="Daily">Daily</option>
<option value="Weekly">Weekly</option>
<option value="Monthly">Monthly</option>
</select>
</div>
<div data-role="fieldcontain">
<button type="submit" id="submit" data-inline="true">Submit</button>
<button type="reset" data-inline="true">Cancel</button>
<h3 id="notification"></h3>
</div>
</form>
</div>
<footer data-role="footer"><h1>Footer</h1></footer>
</section>
</body>
</html>