我有一个表单，我想div通过 AJAX 显示响应。这是来自 的表格图像funds_transfer.php。
我用手册测试它method=post并用表单提交，它工作得很好。这是来自的部分 PHP 代码funds_transfer_backend.php：
$index_num = $_POST['index_num'];
$to_account_num = $_POST['recipient'];
$amount = $_POST['amount'];
if ($amount == '' || $to_account_num == '' || $index_num == -1){
echo "Please complete the form!";
$response = -1;
}
else {
// other code goes here..
$display = array('response' => $response); // for ajax response later
echo json_encode($display);
PHP给了我这个输出：
Please complete the form!{"response":-1}
现在我想用 AJAX 实现它，但它目前不起作用。这是我目前没有工作的 html + jQuery 代码：
<script type="text/javascript" src="http://code.jquery.com/jquery-1.9.0.min.js"></script>
<script type="text/javascript">
function update() {
var two = $('#index_num').val();
var three = $('#recipient_box').val();
var five = $('#amount_box').val();
$.post("funds_transfer_backend.php", {
index_num : two,
recipient : three,
amount : five
},function(data){
if (data.response==-1) {
$('#stage').show().html("Please complete the form!");
}
$('#stage').delay(2000).fadeOut();
},"json");
}
</script>
//other code goes here..
<p>Transfer your funds to other account
<script type="text/javascript">
// Pre populated array of data
var myData = new Array();
<?php
$sql="SELECT * FROM `account` WHERE client_id='$id'";
$result=mysqli_query($conn, $sql);
while($row = mysqli_fetch_array($result, MYSQLI_ASSOC)) {
echo "myData.push('".$row['funds']."');";
$result_array[] = $row['id'];
}
?>
</script>
<form id="example" name="example">
Select your account<select id="selector" name="index_num" style="margin-left: 10px;">
<option value="-1">Account Number</option>
<?php //echo $result_array[0];
$num = count($result_array) - 1;
$i=0;
while($i<=$num)
{
echo "<option value=\"$i\">$result_array[$i]</option>";
$i++;
}
?>
</select>
<br />
Funds : RM <input type="text" id="populateme" name="funds" disabled/><br>
Recipient Account Number <input type="text" id="recipient_box" name="recipient" /> <br>
Amount : RM <input type="text" id="amount_box" name="amount"/><br>
<input type="button" value="Submit" onclick="update();">
<input type="reset" value="Reset">
</form>
<div id="stage" style="background-color:#FF6666; padding-left:20px; color: white;"></div>
<script type="text/javascript">
document.example.selector.onchange = updateText;
function updateText() {
var obj_sel = document.example.selector;
document.example.populateme.value = myData[obj_sel.value];
}
</script>
</p>
上面的 SQL 查询将从 db 中获取数据并将其填充到select boxand中disabled text box。没问题，它目前运行良好。
div id="stage问题是提交和验证后没有响应data.response==-1。我不确定这里有什么问题，可能表格根本没有提交。请提前帮助和感谢。