Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.javascript > #16410

Re: Extracting data from a form

Show all headers | View raw

doctor@doctor.nl2k.ab.ca (The Doctor) wrote:

> We are working with
> 
> <html><head>
[snip]
> End HTML
> 
> All right we want to incorpration the Quantity Value 
> 
> So the Total Price = Sum of Quantity (x)  * Price (x) .
> 
> 
> 277 <= x <= 278 .
> 
> In this case.
> 
> How does one incorporate this into the total?

Use below "count" function replacement. The input quantity value in the 
form must be a valid number greater than zero. Otherwise, if it's 
negative or invalid number, it will be assumed as zero. The "price277", 
"price278" form fields value must be a valid number for the course price, 
or the code won't work.

You might want to learn the code instead of copy-paste-forget. Feel free 
to ask if you don't understand something.

//courseNumber must be a number or a string of number.
//e.g.: 277, "278", etc.
function getTotalCoursePrice(courseNumber) {
  if (calc['price'+courseNumber].checked){
    var price = parseInt(calc['price'+courseNumber].value.trim());
    var qty = parseInt(calc['quantity'+courseNumber].value.trim());
    if (isNaN(qty) || (qty < 0)) qty = 0;
  } else {
    var price = 0;
    var qty = 0;
  }
  return price * qty;
}

function count() {
  var i, result = 0;
  //loop the count for course number 277 to 278 inclusive.
  for (i = 277; i <= 278; i++) i += getTotalCoursePrice(i);

  calc.charge_total.value = result.toFixed(2);
  //don't submit if total price is zero
  return result > 0;
}

Back to comp.lang.javascript | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Extracting data from a form doctor@doctor.nl2k.ab.ca (The Doctor) - 2012-10-04 21:16 +0000
  Re: Extracting data from a form Danny <dann90038@gmail.com> - 2012-10-04 15:31 -0700
  Re: Extracting data from a form JJ <jaejunks_at@_googlemail_dot._com> - 2012-10-05 01:34 +0000
    Re: Extracting data from a form Dr J R Stockton <reply1240@merlyn.demon.co.uk.invalid> - 2012-10-06 19:12 +0100
      Re: Extracting data from a form "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2012-10-07 07:34 +0000
        Re: Extracting data from a form doctor@doctor.nl2k.ab.ca (The Doctor) - 2012-10-08 20:22 +0000
          Re: Extracting data from a form "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2012-10-08 20:52 +0000

csiph-web