当金额以.d0结尾时，scrip会丢一分钱 [英] scrip drops a penny when amount ends with .d0
问题描述
我调用一个函数，它将订购的单价和数量设为
创建金额......它看起来像这样。
函数calculateCost （）
{
quantity = document.RFO.quantity.value;
unitPrice = document.RFO.unitPrice.value;
total = 0;
if（isPositiveInteger（quantity））
{
quantity = parseFloat（quantity）
{
总=数量* unitPrice;
}
}
document.RFO。 total.value =格式（总计）
}
如果一个人输入以.10，.20，.30，...结尾的单价。，。90，
我的代码总共减少了一分钱？但是，如果价格以.1，
..2，.3，...，。9结尾，我的代码工作正常。
似乎计算有问题价格以0结尾，除非是.00
I call a function that takes the unit price and quantity ordered to
create an amount...it looks something like this.
function calculateCost()
{
quantity=document.RFO.quantity.value;
unitPrice=document.RFO.unitPrice.value;
total=0;
if(isPositiveInteger(quantity))
{
quantity=parseFloat(quantity)
{
total=quantity * unitPrice;
}
}
document.RFO.total.value=format(total)
}
if a person enters a unit price that ends with .10, .20, .30, ..., .90,
my code drops a penny off the total? However if the price ends with .1,
..2, .3, ..., .9, my code works fine.
Seems it has a problem calculating prices ending with 0 unless it''s .00
推荐答案
ey **** @ ncsa.uiuc.edu 写道：
如果一个人输入以.10，.20结尾的单价，.30，...，。90，
我的代码总共减少了一分钱？但是，如果价格以.1，
。，。3，...，。9结尾，我的代码工作正常。
似乎计算价格以0结尾的问题，除非它是' .00
if a person enters a unit price that ends with .10, .20, .30, ..., .90,
my code drops a penny off the total? However if the price ends with .1,
.2, .3, ..., .9, my code works fine.
Seems it has a problem calculating prices ending with 0 unless it''s .00
< http://www.jibbering.com/faq/#FAQ4_6>
<http://www.jibbering.com/faq/#FAQ4_6>
为什么我需要将数字转换为字符串？
Why would I need to convert a number into a string?
ey **** @ ncsa.uiuc.edu 写道：
为什么我需要将数字转换为字符串？
Why would I need to convert a number into a string?
你为什么想知道？
引用，请！
Why do you want to know?
Quote, please!
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