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Re: JavaScript Case Project 3-1: The dreaded NaN error

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On Sunday, November 11, 2012 11:08:42 AM UTC-6, Mel Smith wrote:
> where I'm going wrong?
> 
> 
> 
>     You must convert the text string input to a floating point number --  
> 
> probably using the parseFloat() function. See below
> 
> 
> 
> -Mel Smith (one neophyte to another)
> 
> 
> 
> 
> 
> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" 
> 
> "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
> 
> <html xmlns="http://www.w3.org/1999/xhtml">
> 
> <head>
> 
> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
> 
> <title>Untitled Document</title>
> 
> <script type="text/javascript">
> 
> var purchasePrice = txtPurchasePrice.value, shippingAndHandling, totalCost;
> 
> function calculateShipping() {
> 
> 
> 
>     // in here you need to convert the txtPurchasePrice to a floating point 
> 
> numeric before
> 
>     // you can start your calculations. Perhaps like the following:
> 
> 
> 
>     purchasePrice = 
> 
> parseFloat(document.getElementById("txtPurchasePrice").value) ;
> 
> 
> 
>     if (purchasePrice <= 25)
> 
>         shippingAndHandling = 1.50;
> 
>     else
> 
>         shippingAndHandling = purchasePrice * .10;
> 
>     totalCost = purchasePrice + shippingAndHandling;
> 
> 
> 
>     // now you should format your totalCost to an appropriate number of 
> 
> digits below
> 
> 
> 
> window.alert('Purchase price plus shipping and handling is $' + totalCost);
> 
> }
> 
> </script>
> 
> </head>
> 
> 
> 
> <body>
> 
> Purchase price (no dollar signs):
> 
> <form id="form1" method="post" action="">
> 
>   <p>
> 
>     <label for="txtPurchasePrice"></label>
> 
>     <input type="text" name="txtPurchasePrice" id="txtPurchasePrice" />
> 
>     <input type="submit" name="btnCalculate" id="btnCalculate" 
> 
> value="Calculate" onclick="calculateShipping()" />
> 
>   </p>
> 
> </form>
> 
> </body>
> 
> </html>
> 
> 
> 
> For the record, I've also tried changing "txtPurchasePrice.value" to 
> 
> "document.getElementById('txtPurchasePrice').value" and even 
> 
> "txtPurchasePrice.text", but none of what I'm doing appears to make any 
> 
> difference -- no matter which way I go, it still says NaN.

Sadly, I think I tried that, and it also failed.

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JavaScript Case Project 3-1: The dreaded NaN error dmn2004404@gmail.com - 2012-11-11 08:28 -0800
  Re: JavaScript Case Project 3-1: The dreaded NaN error "Mel Smith" <med_cutout_syntel@aol.com> - 2012-11-11 10:08 -0700
    Re: JavaScript Case Project 3-1: The dreaded NaN error dmn2004404@gmail.com - 2012-11-11 09:34 -0800
      Re: JavaScript Case Project 3-1: The dreaded NaN error "Mel Smith" <med_cutout_syntel@aol.com> - 2012-11-11 10:56 -0700
        Re: JavaScript Case Project 3-1: The dreaded NaN error dmn2004404@gmail.com - 2012-11-11 10:07 -0800
        Re: JavaScript Case Project 3-1: The dreaded NaN error dmn2004404@gmail.com - 2012-11-11 10:52 -0800
          Re: JavaScript Case Project 3-1: The dreaded NaN error JJ <jaejunks@glegooilma-swapit.com> - 2012-11-11 20:15 +0000
            Re: JavaScript Case Project 3-1: The dreaded NaN error dmn2004404@gmail.com - 2012-11-11 12:45 -0800
          Re: JavaScript Case Project 3-1: The dreaded NaN error JJ <jaejunks@glegooilma-swapit.com> - 2012-11-11 20:11 +0000
        Re: JavaScript Case Project 3-1: The dreaded NaN error dmn2004404@gmail.com - 2012-11-11 12:15 -0800
          Re: JavaScript Case Project 3-1: The dreaded NaN error Osmo Saarikumpu <osmo@weppipakki.com> - 2012-11-12 10:10 +0200
  Re: JavaScript Case Project 3-1: The dreaded NaN error Gregor Kofler <usenet@gregorkofler.com> - 2012-11-12 09:51 +0100
    Re: JavaScript Case Project 3-1: The dreaded NaN error Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2012-11-12 11:49 +0100

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