我有一个带有下拉菜单的html页面，该菜单有效，onchange调用了一个函数popBox（），该函数也有效。在函数中，我使用ajax将下拉菜单的值发布到php中，php从数据库中进行选择。我想用所选信息填写表格"DetailsForm"中的文本框。我目前没有填写任何文本框，警报（msg）在警报框中显示页面的整个html面。有人能帮我解决我的问题吗。我已经尝试了多种不同的ajax和jquery变体来执行此操作，在使用同一功能15小时后，我开始有点沮丧。提前感谢您的帮助，我非常感谢。
这是我的代码：HTML
<head>
<link href="../UserTemplate.css" rel="stylesheet" type="text/css"/>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<!-- TemplateBeginEditable name="doctitle" -->
<title>Tours</title>
<script type="text/javascript" src="http://code.jquery.com/jquery-1.10.2.min.js"> </script>
<script type="text/javascript">
function popBox(str)
{
$.ajax({
type: "PopulateBoxes.php",
data: { dat: str}
}).done(function( msg ) { //you can also use success
alert( "Data Saved: " + msg );
});
//document.getElementById("txt_Duration").value = <?php Print($Duration); ?>;
//document.getElementById("txt_Vessel_Name").value = <?php Print($Vessel); ?>;
//document.getElementById("txt_Location").value = <?php Print($Location); ?>;
//document.getElementById("txt_Available").value = <?php Print($Available); ?>;
//document.getElementById("txt_Price").value = <?php Print($Price); ?>;
}
</script>
</head>
<body>
<div id="MainDiv">
<div id="Header">
<div id="Logo"><img src="../Scotia Sea Life Logo.png" width="150px" height="110px" alt="Company Logo"/></div>
<div id="NavBar"><ul>
<a href="homepage.php">Home</a> <a href="SelectStudentScore.php">Tours</a> <a href="AdditionPageMain.php">About</a> <a href="SubtractionPageMain.php">Donate</a> <a href="Devisionmain.php">Account</a>
</ul>
</div>
<div id="Title">Tours</div>
</div>
<div id="Content">
<div id="Search">
<div id="SearchDiv">
<form id="SelectTourForm" style="margin:5px;">
<table border="0" align="center" width="100%">
<tr>
<td>
<label style="color:#FFF; font:Georgia, 'Times New Roman', Times, serif; font-size:20px; margin-left:10px; margin-top:25px">Select Tours Details</label></td>
</tr>
<tr>
<td><select name="lst_MonthDrop" style="background-color:#FF9933; color:#FFF; border:none; margin-top:10px; margin- left:10px;" onchange="popBox(this.value);">
<option>Please Select</option>
<?php
include 'populatedrodown.php';
foreach ( $results as $option ) : ?>
<option value="<?php echo $option- >Date; ?>"><?php echo $option->Date; ?></option>
<?php endforeach; ?>
</select>
<input type="submit" name="btn_TourSearch" id="btn_TourSearch" value="Search" style="background:#009300; border-radius:5px; border-color:#009300; color:#FFF;margin-left:5px;" /></td>
</tr>
<tr>
<td></td>
</tr>
</table>
<p> </p>
</form>
</div>
</div>
<div id="DetailsDiv">
<div id="DetailsContent">
<form id="DetailsForm" >
<table border="0" align="center" width="100%">
<tr><td><label style="color:#FFF; font-size:14px;">Tour ID</label> <input type="text" id="Tour_ID" /> </td></tr>
<tr><td><label>Duration</label> <input type="text" id="txt_Duration" /> </td></tr>
<tr><td><label>Vessel Name</label> <input type="text" id="txt_Vessel_Name"/> </td></tr>
<tr><td><label>Location</label> <input type="text" id="txt_Location" /> </td></tr>
<tr><td><label>Date</label> <input type="text" id="txt_Date" /> </td></tr>
<tr><td><label>Available</label> <input type="text" id="txt_Available" /> </td></tr>
<tr><td><label>Price</label> <input type="text" id="txt_Price" /> </td></tr>
</table>
</form>
</div>
</div>
</div>
<div id="Footer">
<div id="FooterLinks"></div>
</div>
</div>
</body>
</html>
PHP
<?php
$q = $_POST['dat'];
$mysql_db_hostname = "localhost";
$mysql_db_user = "root";
$mysql_db_password = "pwd";
$mysql_db_database = "db";
$con = mysql_connect($mysql_db_hostname, $mysql_db_user, $mysql_db_password) or die("Could not connect database");
mysql_select_db($mysql_db_database, $con) or die("Could not select database");
$sql="SELECT * FROM Tour WHERE Date = '".$q."'";
$result = mysqli_query($con,$sql);
while($row = mysqli_fetch_array($result))
{
$Duration = $row['Duration'] ;
$Vessel = $row['Vessel_Name'] ;
$Location = $row['Location'] ;
$Available = $row['Available'];
$Price = $row['Price'];
}
mysqli_close($con);
?>
尝试修改类似于以下的JS代码：
function popBox(selectValue) {
$.ajax({
type: 'POST',
url: "PopulateBoxes.php",
data: { dat: selectedValue },
success: function(serverResponse) {
// after success request server should return response with data
// that will be passed to this callback function as parameter
// and you can use it to fill text boxes:
$('#txt_Duration').val(serverResponse.duration);
}
});
}
此外，您还应该修改PHP代码以返回JSON:中的数据
// At the end you should return selected array. For example:
echo json_encode($dataArray); exit;
当您在PHP代码中使用$_POST时，您需要编辑ajax调用脚本。类型是GET或POST，页面地址位于url属性中。
$.ajax({
type: 'POST',
url: "PopulateBoxes.php",
data: { dat: str}
}).done(function( msg ) { //you can also use success
alert( "Data Saved: " + msg );
});
}