Comparing Money Values???

[scripter73]

Hi,

** PLEASE DON'T GET INTIMIDATED BY THIS POST'S LENGTH. I THINK ITS AN EASY ONE (THOUGH I CAN'T CRACK IT.) **

I have a form that has 3 radio buttons. The 1st radio button is a minimum value, the 2nd is a maximum value, and the 3rd one has a text box associated with it where the user can enter dollar amounts. (Keep in mind this is a text box.) The values for these radio buttons are held in hidden fields on the form.

When the user clicks Submit, a Javascript validation function is invoked. It checks the following:
1) If the user picked the 3rd radio button, then verify they entered an amount (this works).

2) Compare the 3rd box value with the other two box values.

Condition: (if 3rd box value is < 1st box value) alert user
OR (if the 3rd box value is > 2nd box value) alert user (here's my problem - this isn't working).

Here's my Javascript code:


if (document.payment_form.cc_payment[2].checked)
{
//require text box be filled in
if (document.payment_form.otheramt.value == &quot;&quot; || document.payment_form.otheramt.value == null){
alert(&quot;Please enter a dollar amount for payment.&quot;
return false;
}


//validate text box to make sure it is the right amount
alert(&quot;Min amt is &quot; + document.payment_form.min_amt.value);
alert(&quot;Max amt is &quot; + document.payment_form.max_amt.value);
alert(&quot;Other amt is &quot; + document.payment_form.otheramt.value);

var min_curr = document.payment_form.min_amt.value;(1st radio button value)
var max_curr = document.payment_form.max_amt.value;(2nd radio button value)
var oth_curr = document.payment_form.otheramt.value;(3rd radio button value)

if (oth_curr < min_curr){
alert(&quot;Other currency entered is less than the minimum amt due! Please enter another amount.&quot;
return false;
}

if (oth_curr > max_curr){
alert(&quot;Other currency entered exceeds the maximum amount due! Please enter another amount.&quot;
return false;
}





The problem is even if I force a condition that should trigger the second alert message, I still get the first. That tells me Javascript's not recognizing these values as I've intended.

I'm thinking its because I'm referencing the hidden &quot;text&quot; boxes and these are not considered numeric or floating values. I tried using the parseFloat(), but that doesn't work. I get the same thing.

Any ideas??? Any help is greatly appreciated.

Thanks,
scripter73




Change Your Thinking, Change Your Life.

 

[trollacious]

Try forcing a conversion to numerical values, since input values are typically processed as strings:

var min_curr = document.payment_form.min_amt.value * 1;
var max_curr = document.payment_form.max_amt.value * 1;
var oth_curr = document.payment_form.otheramt.value * 1;

Also, just to avoid errors, you might use:

if (document.payment_form.otheramt.value.length == 0 || isNaN(document.payment_form.otheramt.value * 1))
{
alert(&quot;Please enter a dollar amount for payment.&quot;
return false;
}

 

[scripter73]

Thanks for your response, trollacious.

I finally! got the variables to be recognized as numeric with the following:

var min_curr = parseInt(document.payment_form.min_amt.value);
var max_curr = parseInt(document.payment_form.max_amt.value);
var oth_curr = parseInt(document.payment_form.otheramt.value);


I had a function to tell me if they were considered numeric or not. And they are.

However, now I'm just trying to do a simple comparison and its like Javascript can't read the values. All I'm saying is the following:


if (oth_curr < min_curr){
alert(&quot;Other currency entered is less than the minimum amt due! Please enter another amount.&quot;

}

if (oth_curr > max_curr){
alert(&quot;Other currency entered exceeds the maximum amount due! Please enter another amount.&quot;

}



The amounts are as follows:

min_curr = 505.50
max_curr = 1651.51
oth_curr = 15,000.00

Is it something I'm doing wrong. This seems to simple to mess up.

Thanks,
scripter73
Change Your Thinking, Change Your Life.

 

[paulfla]

Did you ever find a solution for this. I am experiencing something similar.

Here is my code

<script language="JavaScript1.2">
<!--   # Below is the Maximum Order Quantity Logic # //-->
function doMaxOrdQ() {
var entered_qty = document.qtyForm.f_ItemQty.value
var maxordqty = document.qtyForm.f_MaxOrdQty.value
if (maxordqty>0)
	{
		if (entered_qty>maxordqty) 
		{
			document.qtyForm.f_ItemQty.select()
			document.qtyForm.f_ItemQty.focus()
			return false
			}
		else
		{
			return true
		}
	}
	else
	{
	//	Max qty is zero so there is no ceiling limit
	return true
	}	
}
</script>

I believe it does not treat the values as numeric.

Can someone please help.

Thanks in advance.

 

[GUJUm0deL]

try:

var entered_qty = parseint(document.qtyForm.f_ItemQty.value)
var maxordqty = parseint(document.qtyForm.f_MaxOrdQty.value)

the parseint() converts the value into numeric.


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