我有一个正在开发的POS系统。到目前为止，我可以让它在页面上显示特定项目，保留所选项目的日志以供购买，存储和检索数据库中的数据，并将销售数据发送到另一个页面。
但是，我希望能够打印另一页。
我将如何做到这一点？
这是将数据发送到收据页面的函数：
// Prints receipt
printReceipt: function()
{
var $company = "Foo",
$address = "Bar Avenue",
$phone = '01234 567890',
$date = new Date(Date.now()).toLocaleString(),
$items = ["Foo", "Bar", "Baz", "Qux"],
$total = 19.97;
$.post("receipt.php", {company: $company, address: $address, phone: $phone, date: $date, items: $items, total: $total}).done(function()
{
/* Print receipt */
});
},
这是它接收此数据并将其显示在收据中的地方.php：
<?php
$company = $_POST['company'];
$address = $_POST['address'];
$phone = $_POST['phone'];
$date = $_POST['date'];
$items = $_POST['items'];
$total = $_POST['total'];
echo "<div id='variables' company='$company' address='$address' phone='$phone' date='$date' items='$items' total='$total'></div>";
?>
<div id='company'>Company</div><br>
<div id='address'>Address</div><br>
<div id='phone'>Phone</div><br>
<ul id='items'><li>Items</li></div>
<p></p>
Thank you
<p></p>
<div id='total'>Total</div>
<div id='date'>Date/Time</div><br>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script>
$('#company').html($('#variables').attr('company'));
$('#address').html($('#variables').attr('address'));
$('#phone').html($('#variables').attr('phone'));
$('#date').html($('#variables').attr('date'));
$('#total').html($('#variables').attr('total'));
$('#vat').html($('#variables').attr('vat'));
// Empties <ul> and then populates with array
$('#items').html("");
for (var item in $('#variables').attr('items'))
{
$('#items').append('<li>' + item + '</li>');
}
</script>
使用jQuery，在发送数据后，我将如何打印出来？
另外，为了将来参考，我如何删除打印提示，以便它立即打印？
您需要将
收据生成的代码注入当前页面（发出 post ajax 请求的代码），然后调用window.print();
// Prints receipt
printReceipt: function()
{
var $company = "Foo",
$address = "Bar Avenue",
$phone = '01234 567890',
$date = new Date(Date.now()).toLocaleString(),
$items = ["Foo", "Bar", "Baz", "Qux"],
$total = 19.97;
$.post("receipt.php", {company: $company, address: $address, phone: $phone, date: $date, items: $items, total: $total}).done(function(data)
{
/* Inject receipt code and ask for print */
$('body').html(data);
window.print();
});
},
小心你receipt.php文件，你正在使用$_POST变量而不保护它们。为什么不直接使用PHP数据到HTML中，而不是使用javascript？
<?php
$company = strip_tags($_POST['company']);
$address = strip_tags($_POST['address']);
$phone = strip_tags($_POST['phone']);
$date = strip_tags($_POST['date']);
$items = $_POST['items'];
$total = strip_tags($_POST['total']);
?>
<div id='company'><?php echo $company; ?></div>
<div id='address'><?php echo $address; ?></div>
<div id='phone'><?php echo $phone; ?></div>
<ul id='items'><?php
foreach($items as $index => $item) {
?><li id="item-<?php echo $index; ?>"><?php echo strip_tags($item); ?></li><?php
}
?></ul>
<p>Thank you</p>
<div id='total'><?php echo $total; ?></div>
<div id='date'><?php echo $date; ?></div><br>