Javascript 使用第一个过滤器过滤第二个下拉列表
insert.phpJavascript 使用第一个过滤器过滤第二个下拉列表,javascript,php,jquery,html,ajax,Javascript,Php,Jquery,Html,Ajax,insert.php <html> <head> </head> <?php include 'config.php'; ?> <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.0.0-beta1/jquery.min.js"></script> <script type=
<html>
<head>
</head>
<?php
include 'config.php';
?>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.0.0-beta1/jquery.min.js"></script>
<script type="text/javascript">
function catFilter(val){
$.ajax({
type:"POST",
url:"filterDropDown.php",
data: 'cat='+val,
success: function(data){
$("#prd_cat").html(data);
}
})
}
</script>
<body>
<table>
<form id="product" method="POST" enctype = "multipart/form-data" novalidate>
<table align="center" width="750" border ="2">
<tr align="center">
<td colspan="7"><h2>Insert Product</h2></td>
</tr>
<tr>
<td>Type of Product: </td>
<td>
<select id="prd_type" onChange="catFilter(this.value)">
<option value="">Select Type</option>
<?php
$run = mysqli_query($con, "Select * from typeproduct");
while($row = mysqli_fetch_array($run)){
$type_title = $row['type_title'];
$type_id = $row['id'];
echo "<option value='$type_id'>$type_title</option>";
}
?>
</select>
</td>
</tr>
<tr>
<td>Select Category: </td>
<td>
<select id="prd_cat">
<option value="">Select Category</option>
</select>
</td>
</tr>
<tr>
<td>Select Sub Category: </td>
<td>
<select id="prd_sub_cat">
<option value="">Select Sub Category</option>
</select>
</td>
</tr>
<tr>
<td>Select Brand: </td>
<td>
<select id="prd_brand">
<option value="">Select Brand</option>
</select>
</td>
</tr>
<tr>
<td><button value="Insert Product" name="insertPrd">Insert Product</button></td>
</tr>
</form>
</form>
</form>
</table>
</body>
</html>
功能滤波器(val){
$.ajax({
类型:“POST”,
url:“filterDropDown.php”,
数据:“cat=”+val,
成功:功能(数据){
$(“#prd#U cat”).html(数据);
}
})
}
插入产品
产品类型:
选择类型
选择类别
我试图创建一个多级下拉列表来插入产品,并使用不同的类别对其进行过滤。config.php连接到数据库。我想使用type_id筛选类别
但我认为我的ajax代码中存在一些问题,因为它无法重定向到filterDropDown.php,因为我通过filterDropDown.php中的警报语句进行了检查。请尝试
数据:{cat:val},
抱歉。。。没用。
<?php
include 'config.php';
?>
<option>Select Category</option>
<?php
$get_cat = "Select * from categories where type_id = '"._POST['cat']"'";
$run_cat = mysqli_query($con, $get_cat);
while($row = mysqli_fetch_array($run_cat)){
?>
<option value="<?php echo $row['cat_id'];?>"><?php echo $row['cat_name'];?></option>
<?php
}
?>
<?php
?>