1
我有用于将库存提交到数据库的库存表单。我在更新单位成本和动态生成行的总成本时遇到了一个问题。正如你可以在下面的快照中看到的那样。产品的名称通过自动完成jQuery获取。使用动态生成的行更新字段时出错
HTML代码
<table class="table table-bordered table-hover">
<thead>
<tr>
<th>#</th>
<th>Product Name/Code</th>
<th>Quantity</th>
<th>Unit Cost</th>
<th>Total Cost</th>
<th>Actions</th>
</tr>
</thead>
<tbody id="p_scents">
<tr>
<td>1</td>
<td><input id="product_id" type="text" name="product_id[]" hidden><input id="product_code" type="text" name="product_code[]" hidden><input class="product_name form-control" id="product_name" type="text" placeholder="Type product name/code here" name="products[]" required></td>
<td><input class="quantity form-control" id="quantity" type="text" placeholder="Quantity to Buy" name="quantity[]" required /></td>
<td><div class="input-group"><span class="input-group-addon">$</span><input class="cost form-control" id="cost" placeholder="Unit Cost" type="text" readonly /></div></td>
<td><div class="input-group"><span class="input-group-addon">$</span><input class="total form-control" id="total" placeholder="Total" type="text" readonly /></div></td>
<td><button class="btn btn-default" type="button" id="addScnt"><i class="fa fa-plus "></i> Item</button></td>
</tr>
</tbody>
</table>
jQuery代码
<script type="text/javascript" src="http://code.jquery.com/jquery-1.9.1.js"></script>
<script type='text/javascript'>
jQuery(document).ready(function(){
var scntDiv = $('#p_scents');
var i = $('#p_scents tr').size() + 1;
$('#addScnt').click(function() {
scntDiv.append('<tr>'+
'<td>'+i+'</td>'+
'<td><input id="product_id" type="text" name="product_id[]" hidden><input id="product_code" type="text" name="product_code[]" hidden><input class="product_name form-control" id="product_name" type="text" placeholder="Type product name/code here" name="products[]" required></td>'+
'<td><input class="quantity form-control" id="quantity" type="text" placeholder="Quantity to Buy" name="quantity[]" required /></td>'+
'<td><div class="input-group"><span class="input-group-addon">$</span><input class="cost form-control" id="cost" placeholder="Unit Cost" type="text" readonly /></div></td>'+
'<td><div class="input-group"><span class="input-group-addon">$</span><input class="total form-control" id="total" placeholder="Total" type="text" readonly /></div></td>'+
'<td><a id="remScnt" class="btn btn-danger btn-xs"><span title="Delete" class="glyphicon glyphicon-remove"></span></a></td>'+
'</tr>');
i++;
//return false;
$('.product_name').autocomplete({
source:'http://localhost/Multi-Channel_Shipping/inc/auto_product.php',
minLength:2,
select:function(evt, ui)
{
// when a product is selected, populate related fields in this form
this.form.cost.value = ui.item.cost;
this.form.product_id.value = ui.item.product_id;
this.form.product_code.value = ui.item.product_code;
}
});
$('.quantity').keyup(function() {
updateTotal();
});
$('.cost').keyup(function() {
updateTotal();
});
var updateTotal = function() {
var input1 = parseFloat($('.quantity').val());
var input2 = parseFloat($('.cost').val());
if (isNaN(input1) || isNaN(input2)) {
if(!input2){
$('.total').val($('.quantity').val());
}
if(!input1){
$('.total').val($('.cost').val());
}
} else {
$('.total').val(input1 * input2);
}
};
var output_total = $('.total');
var total = input1 + input2;
output_total.val(total);
});
//Remove button
$(document).on('click', '#remScnt', function() {
if (i > 2) {
$(this).closest('tr').remove();
i--;
}
return false;
});
$('.product_name').autocomplete({
source:'http://localhost/Multi-Channel_Shipping/inc/auto_product.php',
minLength:2,
select:function(evt, ui)
{
// when a zipcode is selected, populate related fields in this form
this.form.cost.value = ui.item.cost;
this.form.product_id.value = ui.item.product_id;
this.form.product_code.value = ui.item.product_code;
}
});
$('.quantity').keyup(function() {
updateTotal();
});
$('.cost').keyup(function() {
updateTotal();
});
var updateTotal = function() {
var input1 = parseFloat($('.quantity').val());
var input2 = parseFloat($('.cost').val());
if (isNaN(input1) || isNaN(input2)) {
if(!input2){
$('.total').val($('.quantity').val());
}
if(!input1){
$('.total').val($('.cost').val());
}
} else {
$('.total').val(input1 * input2);
}
};
var output_total = $('.total');
var total = input1 + input2;
output_total.val(total);
});
</script>
AUTO_PRODUCT.PHP CODE
<?php
class DB
{
const DATABASE = 'multi-channel_shipping';
const HOST = 'localhost';
const USERNAME = 'root';
const PASSWORD = '';
static private $pdo;
static public function singleton()
{
if (!is_object(self::$pdo))
{
self::$pdo = new PDO('mysql:dbname=' . self::DATABASE . ';host=' . self::HOST,
self::USERNAME,
self::PASSWORD);
}
return self::$pdo;
}
private function __construct()
{
}
public function __clone()
{
throw new Exception('You may not clone the DB instance');
}
}
if (!isset($_REQUEST['term']))
{
die('([])');
}
$st = DB::singleton()
->prepare(
'SELECT * ' .
'FROM products ' .
'WHERE (name LIKE :name) OR (code LIKE :name) ' .
'ORDER BY name ASC ' .
'LIMIT 0,10');
$searchProduct = '%'.$_REQUEST['term'].'%';
$st->bindParam(':name', $searchProduct, PDO::PARAM_STR);
$data = array();
if ($st->execute())
{
while ($row = $st->fetch(PDO::FETCH_OBJ))
{
$data[] = array(
'value' => $row->code." - ".$row->name,
'cost' => $row->cost,
'product_id' => $row->id,
'product_code' => $row->code
);
}
}
echo json_encode($data);
flush();
?>
MySQL数据
--
-- Table structure for table `products`
--
CREATE TABLE IF NOT EXISTS `products` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`code` varchar(100) NOT NULL,
`name` varchar(255) NOT NULL,
`unit` varchar(50) DEFAULT NULL,
`cost` decimal(25,2) DEFAULT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `code` (`code`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=3 ;
--
-- Dumping data for table `products`
--
INSERT INTO `products` (`id`, `code`, `name`, `unit`, `cost`) VALUES
(1, '4815162342', 'BAZIC 12 Dil Dil Pak', 'Packet', '0.10'),
(2, '23', 'Razer', 'Piece', '0.03');
我还需要把运输成本输入字段，并显示在表底部的发票总额。
在页面中不能有重复的ID。这是无效的HTML和jQuery只会看到第一场比赛。改为使用添加元素上的类并匹配那些元素。 – 2014-10-30 10:37:12
为什么你在'if'内部增加输入，但是在'if'完成后再添加它们？如果他们都是'NaN'，你为什么要乘以数字？ – Barmar 2014-10-30 10:50:01