用Javascript和JSON添加和减去 [英] Adding and Subtracting with Javascript and JSON
问题描述
我有一个T恤价格表，您可以在其中选择服装，颜色，添加多个位置以及一些其他选项.
I have a t-shirt price form where you can select the garment, the color, add multiple locations and then some extra options.
我试图弄清楚如何在选择添加第二次打印"时进行制作，这不仅会增加衬衫的价格，而且还会增加折价幅度，例如72pc，96pc，144pc等.
Im trying to figure out how to make it when you select a "Add A Second Print it adds a price to the shirt but also adds price discount per the amount like 72pc, 96pc, 144pc and so on.
我尝试了很多事情.我想我可能需要一个if语句所以每当第二打印选项被选中它增加了价格，但随后申请折扣的每件，但我似乎无法找到答案.
I've tried multiple things. I think I might need a if statement so whenever the second print option is selected it adds the price but then apply discounts to the per piece but I cant seem to figure it out.
我将在底部显示一些代码，但是您可以在 https://gist.github.com/1719315
I'll show a little bit of my code at the bottom but you can view the whole thing at https://gist.github.com/1719315
感谢您的关注！
以下是我的JSON选项之一:
Heres is one of my options for the JSON:
var shirtsJSON=[
{
"pattern": "Delta Adult S/S 5.2oz",
"basePrice": 4.26,
"colors": {
"white": 0,
"athletic": 0.12,
"color": 0.23
},
"deductions": {
"de48pp": 0,
"de72pp": 0.68,
"de96pp": 1.01,
"de144pp": 1.45,
"de288pp": 1.69,
"de576pp": 1.91,
"de1200pp": 1.98,
"de1800pp": 1.98,
"de2400pp": 1.98,
"de5000pp": 1.98
},
"oneLocation": {
"onelocnone": 0,
"oneloc12": 3.28,
"oneloc34": 5.41,
"oneloc56": 7.52,
"oneloc78": 9.69,
"oneloc910": 11.80
},
"twoLocation": {
"twolocnone": 0,
"twoloc12": 3.28,
"twoloc34": 5.41,
"twoloc56": 7.52,
"twoloc78": 9.69,
"twoloc910": 11.80
},
"threeLocation": {
"threelocnone": 0,
"threeloc12": 3.28,
"threeloc34": 5.41,
"threeloc56": 7.52,
"threeloc78": 9.69,
"threeloc910": 11.80
},
"fourLocation": {
"fourlocnone": 0,
"fourloc12": 3.28,
"fourloc34": 5.41,
"fourloc56": 7.52,
"fourloc78": 9.69,
"fourloc910": 11.80
}
},
此处计算的地方:
function calculatePrices() {
totalPrice = 0.00;
for (i = 1; i <= numShirts; i++) {
sIndex = parseInt($('#shirt' + i + 'pattern').val());
color = $('#shirt' + i + 'color').val();
oneLocation = $('#shirt' + i + 'oneLocation').val();
twoLocation = $('#shirt' + i + 'twoLocation').val();
threeLocation = $('#shirt' + i + 'threeLocation').val();
fourLocation = $('#shirt' + i + 'fourLocation').val();
deductions = $('#shirt' + i - 'deductions').val();
price = shirtsJSON[sIndex]["basePrice"];
price += shirtsJSON[sIndex]["colors"][color];
price += shirtsJSON[sIndex]["oneLocation"][oneLocation];
price += shirtsJSON[sIndex]["twoLocation"][twoLocation];
price += shirtsJSON[sIndex]["threeLocation"][threeLocation];
price += shirtsJSON[sIndex]["fourLocation"][fourLocation];
totalPrice += price;
}
$('#48pc').html("<u>48pc : </u>" + currency + getMoney(totalPrice * 48));
$('#72pc').html("<u>72pc : </u>" + currency + getMoney(totalPrice * 72 ));
$('#96pc').html("<u>96pc : </u>" + currency + getMoney(totalPrice * 96));
$('#144pc').html("<u>144pc : </u>" + currency + getMoney(totalPrice * 144));
$('#288pc').html("<u>288pc : </u>" + currency + getMoney(totalPrice * 288));
$('#576pc').html("<u>576pc : </u>" + currency + getMoney(totalPrice * 576));
$('#1200pc').html("<u>1200pc : </u>" + currency + getMoney(totalPrice * 1200));
$('#1800pc').html("<u>1800pc : </u>" + currency + getMoney(totalPrice * 1800));
$('#2400pc').html("<u>2400pc : </u>" + currency + getMoney(totalPrice * 1800));
$('#5000pc').html("<u>5000pc : </u>" + currency + getMoney(totalPrice * 5000));
$('#48pp').html("<u>Per Piece : </u>" + currency + getMoney((totalPrice - shirtsJSON[sIndex].deductions.de48pp) / (1-0.25)));
$('#72pp').html("<u>Per Piece : </u>" + currency + getMoney((totalPrice - shirtsJSON[sIndex].deductions.de72pp) / (1-0.25)));
$('#96pp').html("<u>Per Piece : </u>" + currency + getMoney((totalPrice - shirtsJSON[sIndex].deductions.de96pp) / (1-0.25)));
$('#144pp').html("<u>Per Piece : </u>" + currency + getMoney((totalPrice - shirtsJSON[sIndex].deductions.de144pp) / (1-0.15)));
$('#288pp').html("<u>Per Piece : </u>" + currency + getMoney((totalPrice - shirtsJSON[sIndex].deductions.de288pp) / (1-0.15)));
$('#576pp').html("<u>Per Piece : </u>" + currency + getMoney((totalPrice - shirtsJSON[sIndex].deductions.de576pp) / (1-0.12)));
$('#1200pp').html("<u>Per Piece : </u>" + currency + getMoney((totalPrice - shirtsJSON[sIndex].deductions.de1200pp) / (1-0.12)));
$('#1800pp').html("<u>Per Piece : </u>" + currency + getMoney((totalPrice - shirtsJSON[sIndex].deductions.de1800pp) / (1-0.12)));
$('#2400pp').html("<u>Per Piece : </u>" + currency + getMoney((totalPrice - shirtsJSON[sIndex].deductions.de2400pp) / (1-0.12)));
$('#5000pp').html("<u>Per Piece : </u>" + currency + getMoney((totalPrice - shirtsJSON[sIndex].deductions.de5000pp) / (1-0.10)));
推荐答案
首先，我建议做计算服务器端.您可以将简单的Web服务与一种以衬衫数量作为参数的方法一起使用.
First of all, i would recommend to do the calculation server side. You can use a simple webservice with one method that takes the number of shirts as the argument.
如果您不使用WCF服务，则可以使用以下库反序列化JSON参数:
If you don't use a WCF service, you can deserialize the JSON argument with this library:
http://james.newtonking.com/pages/json-net.aspx
进行计算并将其发送回客户端.您可以按照以下说明使用jQuery轻松完成此操作: http://api.jquery.com/jQuery.post /
Do the calculation and send it back to the client. You can do this easily with jQuery as described here: http://api.jquery.com/jQuery.post/
在成功回调中，您可以然后操作DOM以显示正确的信息.
Inside the success callback you can then manipulate your DOM to display the correct information.
这篇关于用Javascript和JSON添加和减去的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
