Solved

Add user inputs

Posted on 2004-10-12
5
219 Views
Last Modified: 2010-04-06
Hey, i know that this is a simple question, but i cant find the answer it ANYWHERE.

I want to multiply and add numbers that a user types into a form.  It is going to be used so that users can calculate costs.

Please give examples of codes along with you solutions

Thanks!!!
0
Comment
Question by:kylen1010
  • 3
  • 2
5 Comments
 
LVL 1

Expert Comment

by:apg88
ID: 12294110
Here is the code for the calculator with a fixed item and price.
<html>
<head>
<script language="JavaScript">
<!-- hide this script from old browsers
function temp(form)
{
  var f = parseFloat(form.NumberOfItems.value, 10);
  var c = 0;
  var p = 12.32;      //This is the actual pice of the item
  c = "$" + f*p;
  form.TotalPrice.value = c;
}
// done hiding from old browsers -->
</script>
</head>
<body>
<FORM>
<h2>Price Calc</h2>
<p>Items are @ $12.32 each.</p>
<p>Enter a the number of items:
  <INPUT NAME="NumberOfItems" VALUE="1" MAXLENGTH="15" SIZE=15>
</p>
<p>
Click this button to the final price.:
    <INPUT NAME="calc" VALUE="Calculate" TYPE=BUTTON
onClick=temp(this.form)>
<p>
The total price is:
    <INPUT NAME="TotalPrice" READONLY SIZE=15>
</FORM>
</body>
</html>
0
 
LVL 2

Author Comment

by:kylen1010
ID: 12303008
Thanks!  I am trying to modify the script just a little (I have very little knowlege in Javascript) The total amount (var z) that i get is correct, however there are 00000000's at the end of the answer.  I was wondering if there was a way to remove those (so the answer is 0.06 instead of 0.06000000, for example)

<html>
<head>
<script language="JavaScript">
<!-- hide this script from old browsers
function temp(form)
{
  var a = parseFloat(form.paper.value, 10);
  var b = 0.05;

  var c = parseFloat(form.ink.value, 10);
  var d = 0.01

  var z = 0;
  var x = 0;
  var y = 0;

  x = a*b;
  y = a*d;
  z = $ + x + y
  form.TotalPrice.value = z;
}
// done hiding from old browsers -->
</script>
</head>
<body>
<FORM>
<h2>Price Calc</h2>

<p>Paper ($0.05/page):
  <INPUT NAME="paper" VALUE="1" MAXLENGTH="15" SIZE=15>
</p>
<p>Ink ($0.01/page):
  <INPUT NAME="ink" VALUE="1" MAXLENGTH="15" SIZE=15>
</p>
<p>
Click this button to the final price.:
    <INPUT NAME="calc" VALUE="Calculate" TYPE=BUTTON
onClick=temp(this.form)>
<p>
The total price is:
    <INPUT NAME="TotalPrice" READONLY SIZE=15>
</FORM>
</body>
</html>


Thanks again!
0
 
LVL 2

Author Comment

by:kylen1010
ID: 12303107
I know that I could just do:

  var a = parseFloat(form.paper.value, 10);
  var b = 0.06;

  var z = 0;
  var x = 0;
  var y = 0;

  x = a*b;
  z = "$" + x

but i was just wondering if i could remove the 0's using the script in my previous post.

Thanks
0
 
LVL 1

Accepted Solution

by:
apg88 earned 25 total points
ID: 12304748
Here you go:

<html>
<head>
<script language="JavaScript">
<!-- hide this script from old browsers
function temp(form)
{
  var a = parseFloat(form.paper.value, 10);
  var b = 0.05;

  var c = parseFloat(form.ink.value, 10);
  var d = 0.01;

  var z = 0;
  var x = 0;
  var y = 0;
  var w = 0;

  x = Math.round(a*b*100)/100;
  y = Math.round(c*d*100)/100;
  w = Math.round((x+y)*100)/100;
  z = "$" + w;
  form.TotalPrice.value = z;
}
// done hiding from old browsers -->
</script>
</head>
<body>
<FORM>
<h2>Price Calc</h2>

<p>Paper ($0.05/page):
  <INPUT NAME="paper" VALUE="1" MAXLENGTH="15" SIZE=15>
</p>
<p>Ink ($0.01/page):
  <INPUT NAME="ink" VALUE="1" MAXLENGTH="15" SIZE=15>
</p>
<p>
Click this button to the final price.:
    <INPUT NAME="calc" VALUE="Calculate" TYPE=BUTTON
onClick=temp(this.form)>
<p>
The total price is:
    <INPUT NAME="TotalPrice" READONLY SIZE=15>
</FORM>
</body>
</html>
0
 
LVL 2

Author Comment

by:kylen1010
ID: 12313385
Great! THANKS A MILLION!
0

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
XSLT 5 49
PHP PDO get the error if exists 3 100
Problem to page 4 99
React or Angular? 6 86
Preface In the first article: A Better Website Login System (http://www.experts-exchange.com/A_2902.html) I introduced the EE Collaborative Login System and its intended purpose. In this article I will discuss some of the design consideratio…
JavaScript has plenty of pieces of code people often just copy/paste from somewhere but never quite fully understand. Self-Executing functions are just one good example that I'll try to demystify here.
Viewers will learn one way to get user input in Java. Introduce the Scanner object: Declare the variable that stores the user input: An example prompting the user for input: Methods you need to invoke in order to properly get  user input:
The viewer will learn the benefit of using external CSS files and the relationship between class and ID selectors. Create your external css file by saving it as style.css then set up your style tags: (CODE) Reference the nav tag and set your prop…

756 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question