我正在尝试使 AJAX 示例正常工作，但无法正常工作。我正在使用 xampp。代码似乎不起作用......顺便说一句，没有目录问题，我确定......我检查了一切......
费率.html
<html>
<head>
<script>
function showUser(str) {
if (str == "") {
document.getElementById("txtHint").innerHTML = "";
return;
}
if (window.XMLHttpRequest) { // code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp = new XMLHttpRequest();
} else { // code for IE6, IE5
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange = function () {
if (xmlhttp.readyState == 4 & amp; & amp; xmlhttp.status == 200) {
document.getElementById("txtHint").innerHTML = xmlhttp.responseText;
}
}
xmlhttp.open("GET", "getuser.php?q=" + str, true);
xmlhttp.send();
}
</script>
</head>
<body id="top">
<br />
<div class="wrapper col3" style="background-image: url(); opacity: 0.7;">
<?php include( "header.inc"); ?>
</div>
<br /><br /><br />
<div class="wrapper col2">
<?php include( "menu.inc"); ?>
</div>
<br /><br />
<div class="wrapper col5">
<h1>Rates</h1>
<p>Please select an activity to view its rate at Casela. Rates available for both residents and non-residents.</p>
<form>
<select name="activity" onchange="showUser(this.value)">
<option value="">Please select an actvity</option>
<option value="1">Big Cats (Lions)</option>
<option value="2">Big Cats (Tigers)</option>
</select>
</form>
<div id="txtHint" style="padding: 20px;"></div>
</div>
<br /><br />
</body>
</html>
获取用户.php
<?php
$q = $_GET["q"];
$con = mysql_connect('localhost', 'root', 'password');
if (!$con) {
die('Could not connect: ' . mysql_error());
}
mysql_select_db("rates", $con);
$sql = "SELECT * FROM activities WHERE id = '" . $q . "'";
$result = mysql_query($sql);
echo "<table border='1'>
<tr>
<th>Activity</th>
<th>Description</th>
<th>Duration</th>
<th>Restriction</th>
<th>Resident</th>
<th>Non-Resident</th>
</tr>";
while ($row = mysql_fetch_array($result)) {
echo "<tr>";
echo "<td>" . $row['Activity'] . "</td>";
echo "<td>" . $row['Decription'] . "</td>";
echo "<td>" . $row['Duration'] . "</td>";
echo "<td>" . $row['Restriction'] . "</td>";
echo "<td>" . $row['Resident'] . "</td>";
echo "<td>" . $row['NonResident'] . "</td>";
echo "</tr>";
}
echo "</table>";
mysql_close($con);
?>