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Old 04-14-2005, 10:52 AM   #1
linuxfond
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if - else


function doSalesTax(field,form) {

if (field.checked)

form.tax_amt.value = formatDecimal(

<?php echo isset($cur_sales_tax)? $cur_sales_tax: 0 ?> * form.sub_tot.value );

else form.tax_amt.value = 0;

if (form.sub_tot.value > 0) doTotals(form);


Hi,
I am not a programer. Hobby, so to say. This function adds the SalesTax only if the field is checked. I would like to do the opposite: SalesTax is added if the field is not checked. If the field is checked, the SalesTax is 0%. What should I change/add? Thanks.
 
Old 04-14-2005, 11:02 AM   #2
jtshaw
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Code:
if (!field.checked)

form.tax_amt.value = formatDecimal(

<?php echo isset($cur_sales_tax)? $cur_sales_tax: 0 ?> * form.sub_tot.value );

else form.tax_amt.value = 0;

if (form.sub_tot.value > 0) doTotals(form);
 
Old 04-14-2005, 11:03 AM   #3
marghorp
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You are checking the field.checked with the if condition. The condition looks like this:

if(field.checked) -----> this is true when the field is checked.

You want it true when the field is unchecked, just reverse the condition.

You can reverse a condition by putting a ! sign in front of it, like this:

if(!field.checked) ------> this will be true when the field is not checked.
 
Old 04-14-2005, 11:49 AM   #4
linuxfond
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Thanks, it works great but my question, my fault, was not put the right way.
I still have to check the box for the tax amount to appear in the field.
However if I uncheck the box, the tax remains displayed.
How can I display the tax without checking - unchecking the box?
The tax amount 0.00 should display if the box is checked.

I am not sure I provide all necessary variables in this post...

Here is the code which does it:
Code:
// VAT 

if ( isset($state) && !empty($state) && isset($cur_sales_tax) && !empty($cur_sales_tax) ) {

  $class = ($class == 'even')? 'odd': 'even';

  echo '<tr class="' . $class . '">

	 <td colspan="2">Check if you live outside ' . $state . '

    <input type="checkbox" name="sales_tax" tabindex="' . ($num_products + 2) . '" onclick="doSalesTax(this,this.form)"></td>

	 <td class="lbl" colspan="2">VAT 21%:

   &euro;<input class="cur" type="text" name="tax_amt" size="8" value="0" readonly onfocus="this.blur()"></td>

 </tr>

';

}
 
Old 04-14-2005, 12:53 PM   #5
keefaz
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Try add in your body (say your form name is 'MyForm') :
Code:
<body onload="doSalesTax(document.MyForm.sales_taxfield, document.MyForm);">
That's way the doSalesTax() is called as soon as the page is loaded
 
Old 04-14-2005, 02:14 PM   #6
linuxfond
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Great!
This almost does the trick.
The only problem is that I have to reload (refresh) the page for the TAX to show up in the field.
Some mysterious script which would do it without refreshing is missing.
Thanks a lot!
 
  


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