Solved

Mortgage Calculator Problem

Posted on 2004-04-01
3
285 Views
Last Modified: 2013-12-03
My code is below - I thought it was ok, but I'm getting an error.  The error is this:

Line: 12  (I believe it is this - var mi = document.temps.IR.value / 1200;)
Char: 3

Error: 'document.temps.IR' is null or not an object
Code: 0

*****************************************************************
Code:

 <html>
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
  <title>Mortgage Calculator</title>
  <script LANGUAGE="JavaScript">
function floor(number)
  {
  return Math.floor(number*Math.pow(10,2))/Math.pow(10,2);
  }
function dosum()
  {
  var mi = document.temps.IR.value / 1200;
  var base = 1;
  var mbase = 1 + mi;
  for (i=0; i<document.temps.YR.value * 12; i++)
  {
  base = base * mbase
  }
  document.temps.PI.value = floor(document.temps.LA.value * mi / ( 1 - (1/base)))
  document.temps.MT.value = floor(document.temps.AT.value / 12)
  document.temps.MI.value = floor(document.temps.AI.value / 12)
  var dasum = document.temps.LA.value * mi / ( 1 - (1/base)) +
  document.temps.AT.value / 12 +
  document.temps.AI.value / 12;
  document.temps.MP.value = floor(dasum);
  }
</script>
 
</head>
<body bgcolor="#FFFFFF">

<table width="71%"  border="0" cellspacing="0" cellpadding="0">
  <tr>
    <td><table width="100%"  border="0" cellspacing="2" cellpadding="2">
      <tr>
        <td colspan="6">Mortgage and Expense Information</td>
        </tr>
      <tr>
        <td colspan="6"><hr width="100%" size=1 noshade></td>
        </tr>
      <tr>
        <td width="15%"><font size="2"
  face="Arial, Verdana" color="003366">Term (Yrs.):</font></td>
        <td width="14%"><font size="2"
  face="Arial, Verdana" color="003366">
          <input name="YR"
  onChange="dosum()" size="6" value="25">
        </font></td>
        <td width="18%"><font size="2"
  face="Arial, Verdana" color="003366">Interest Rate:</font></td>
        <td width="18%"><font size="2"
  face="Arial, Verdana" color="003366">
          <input type="TEXT"
  name="IR" onChange="dosum()" size="6" value="8.0">
        </font></td>
        <td width="18%"><font color="003366" size="2" face="Arial, Verdana">Loan Amount: </font></td>
        <td width="17%"><font size="2"
  face="Arial, Verdana" color="003366">
          <input type="TEXT"
  name="LA" onChange="dosum()" size="7" value="100000">
        </font></td>
      </tr>
      <tr>
        <td><font size="2"
  face="Arial, Verdana" color="003366">Annual Taxes:</font></td>
        <td><font size="2"
  face="Arial, Verdana" color="003366">
          <input name="AT"
  onChange="dosum()" size="6" value="1500">
        </font></td>
        <td><font size="2"
  face="Arial, Verdana" color="003366">Annual Insurance:</font></td>
        <td><font size="2"
  face="Arial, Verdana" color="003366">
          <input name="AI"
  onChange="dosum()" size="6" value="500">
        </font></td>
        <td colspan="2"><font
  size="2" face="Arial, Verdana" color="003366">
          <input name="button"
  type="button" onClick="dosum()" value="Calculate Now!">
        </font></td>
        </tr>
    </table></td>
  </tr>
  <tr>
    <td><table width="100%"  border="0" cellspacing="2" cellpadding="2">
      <tr>
        <td>Resulting Payments</td>
      </tr>
      <tr>
        <td><hr width="100%" size=1 noshade></td>
      </tr>
      <tr>
        <td><table width="100%"  border="0" cellspacing="2" cellpadding="2">
          <tr>
            <td width="56%"><font size="2" face="Arial, Verdana" color="003366">Monthly Principal and Interest</font></td>
            <td width="44%"><font size="2" face="Arial, Verdana" color="003366">
              <input
  name="PI" size="10">
            </font></td>
          </tr>
          <tr>
            <td><font size="2" face="Arial, Verdana" color="003366">Monthly Taxes</font></td>
            <td><font size="2" face="Arial, Verdana" color="003366">
              <input
  type="TEXT" name="MT" size="10">
            </font></td>
          </tr>
          <tr>
            <td><font size="2" face="Arial, Verdana" color="003366">Monthly Insurance</font></td>
            <td><font size="2" face="Arial, Verdana" color="003366">
              <input
  type="TEXT" name="MI" size="10">
            </font></td>
          </tr>
          <tr>
            <td><strong><font size="2"
  face="Arial, Verdana" color="003366">Total Payment</font></strong></td>
            <td><strong><font size="2"
  face="Arial, Verdana" color="003366">
            <input
  type="TEXT" name="MP" size="10">
</font></strong></td>
          </tr>
        </table></td>
      </tr>
      <tr>
        <td><hr width="100%" size=1 noshade></td>
      </tr>
      <tr>
        <td><font size="-2" face="Arial, Verdana" color="003366">&nbsp;This information is accurate but may not apply to your actual mortgage agreement.&nbsp; Consult a professional Realtor or Mortgage Company for a written quote. </font></td>
      </tr>
    </table></td>
  </tr>
</table>
</body>
  </html>
*************************************************************************

Can anybody help?
0
Comment
Question by:velcrobots
3 Comments
 
LVL 12

Accepted Solution

by:
venkateshwarr earned 250 total points
ID: 10737499
Hi velcrobots,

Include the form name before the table as
<form name="temps">
<table>
.
.
.
</table>
</form>

Cheers!
venkat.
0
 
LVL 15

Expert Comment

by:Timbo87
ID: 10737505
Not quite sure what "temps" is. I replaced it with a form and it works.

<html>
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
  <title>Mortgage Calculator</title>
  <script LANGUAGE="JavaScript">
function floor(number)
  {
  return Math.floor(number*Math.pow(10,2))/Math.pow(10,2);
  }
function dosum()
  {
  var mi = document.forms[0].IR.value / 1200;
  var base = 1;
  var mbase = 1 + mi;
  for (i=0; i<document.forms[0].YR.value * 12; i++)
  {
  base = base * mbase
  }
  document.forms[0].PI.value = floor(document.forms[0].LA.value * mi / ( 1 - (1/base)))
  document.forms[0].MT.value = floor(document.forms[0].AT.value / 12)
  document.forms[0].MI.value = floor(document.forms[0].AI.value / 12)
  var dasum = document.forms[0].LA.value * mi / ( 1 - (1/base)) +
  document.forms[0].AT.value / 12 +
  document.forms[0].AI.value / 12;
  document.forms[0].MP.value = floor(dasum);
  }
</script>
 
</head>
<body bgcolor="#FFFFFF">
<form>
<table width="71%"  border="0" cellspacing="0" cellpadding="0">
  <tr>
    <td><table width="100%"  border="0" cellspacing="2" cellpadding="2">
      <tr>
        <td colspan="6">Mortgage and Expense Information</td>
        </tr>
      <tr>
        <td colspan="6"><hr width="100%" size=1 noshade></td>
        </tr>
      <tr>
        <td width="15%"><font size="2"
  face="Arial, Verdana" color="003366">Term (Yrs.):</font></td>
        <td width="14%"><font size="2"
  face="Arial, Verdana" color="003366">
          <input name="YR"
  onChange="dosum()" size="6" value="25">
        </font></td>
        <td width="18%"><font size="2"
  face="Arial, Verdana" color="003366">Interest Rate:</font></td>
        <td width="18%"><font size="2"
  face="Arial, Verdana" color="003366">
          <input type="TEXT"
  name="IR" onChange="dosum()" size="6" value="8.0">
        </font></td>
        <td width="18%"><font color="003366" size="2" face="Arial, Verdana">Loan Amount: </font></td>
        <td width="17%"><font size="2"
  face="Arial, Verdana" color="003366">
          <input type="TEXT"
  name="LA" onChange="dosum()" size="7" value="100000">
        </font></td>
      </tr>
      <tr>
        <td><font size="2"
  face="Arial, Verdana" color="003366">Annual Taxes:</font></td>
        <td><font size="2"
  face="Arial, Verdana" color="003366">
          <input name="AT"
  onChange="dosum()" size="6" value="1500">
        </font></td>
        <td><font size="2"
  face="Arial, Verdana" color="003366">Annual Insurance:</font></td>
        <td><font size="2"
  face="Arial, Verdana" color="003366">
          <input name="AI"
  onChange="dosum()" size="6" value="500">
        </font></td>
        <td colspan="2"><font
  size="2" face="Arial, Verdana" color="003366">
          <input name="button"
  type="button" onClick="dosum()" value="Calculate Now!">
        </font></td>
        </tr>
    </table></td>
  </tr>
  <tr>
    <td><table width="100%"  border="0" cellspacing="2" cellpadding="2">
      <tr>
        <td>Resulting Payments</td>
      </tr>
      <tr>
        <td><hr width="100%" size=1 noshade></td>
      </tr>
      <tr>
        <td><table width="100%"  border="0" cellspacing="2" cellpadding="2">
          <tr>
            <td width="56%"><font size="2" face="Arial, Verdana" color="003366">Monthly Principal and Interest</font></td>
            <td width="44%"><font size="2" face="Arial, Verdana" color="003366">
              <input
  name="PI" size="10">
            </font></td>
          </tr>
          <tr>
            <td><font size="2" face="Arial, Verdana" color="003366">Monthly Taxes</font></td>
            <td><font size="2" face="Arial, Verdana" color="003366">
              <input
  type="TEXT" name="MT" size="10">
            </font></td>
          </tr>
          <tr>
            <td><font size="2" face="Arial, Verdana" color="003366">Monthly Insurance</font></td>
            <td><font size="2" face="Arial, Verdana" color="003366">
              <input
  type="TEXT" name="MI" size="10">
            </font></td>
          </tr>
          <tr>
            <td><strong><font size="2"
  face="Arial, Verdana" color="003366">Total Payment</font></strong></td>
            <td><strong><font size="2"
  face="Arial, Verdana" color="003366">
            <input
  type="TEXT" name="MP" size="10">
</font></strong></td>
          </tr>
        </table></td>
      </tr>
      <tr>
        <td><hr width="100%" size=1 noshade></td>
      </tr>
      <tr>
        <td><font size="-2" face="Arial, Verdana" color="003366">&nbsp;This information is accurate but may not apply to your actual mortgage agreement.&nbsp; Consult a professional Realtor or Mortgage Company for a written quote. </font></td>
      </tr>
    </table></td>
  </tr>
</table>
</form>
</body>
  </html>
0
 

Author Comment

by:velcrobots
ID: 10737651
Thank you both for the quick response, it works just perfectly now.  I had to give the points to vankat, he was just a couple minutes earlier!!!

Thanks again!
0

Featured Post

ScreenConnect 6.0 Free Trial

Explore all the enhancements in one game-changing release, ScreenConnect 6.0, based on partner feedback. New features include a redesigned UI, app configurations and chat acknowledgement to improve customer engagement!

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
how can i select 4 35
how can i make the array into an object? 4 33
Jquery 10 20
Jquery Check against database on select from auto fill not working in all browsers 5 32
JavaScript can be used in a browser to change parts of a webpage dynamically. It begins with the following pattern: If condition W is true, do thing X to target Y after event Z. Below are some tips and tricks to help you get started with JavaScript …
Nothing in an HTTP request can be trusted, including HTTP headers and form data.  A form token is a tool that can be used to guard against request forgeries (CSRF).  This article shows an improved approach to form tokens, making it more difficult to…
The viewer will learn the basics of jQuery, including how to invoke it on a web page. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery.: (CODE)
The viewer will learn the basics of jQuery including how to code hide show and toggles. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery…

803 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