Re: [CFTALKTor] Calculator

Mon, 11 Mar 2002 19:45:58 -0800

no...but I think the answer lies somewhere in the javascript code and passing the variables to the cfoutput tag. the java  code is as follows...hope you can help or some other guru.
thanks
 
<SCRIPT LANGUAGE="LiveScript">
    function checkNumber(input, min, max, msg) {
        msg = msg + " field has invalid data: " + input.value;
        var str = input.value;
        for (var i = 0; i < str.length; i++) {
            var ch = str.substring(i, i + 1)
            if ((ch < "0" || "9" < ch) && ch != '.') {
                alert(msg);
                return false;
            }
        }
        var num = 0 + str
        if (num < min || max < num) {
            alert(msg + " not in range [" + min + ".." + max + "]");
            return false;
        }
        input.value = str;
        return true;
    }
 
    function computeField(input) {
        if (input.value != null && input.value.length != 0)
            input.value = "" + eval(input.value);
        computeForm(input.form);
    }
 
    function computeForm(form) {
        if (form.downpayment.value == null || form.downpayment.value.length == 0)
            form.downpayment.value = 0;
        if ((form.payments.value == null || form.payments.value.length == 0) ||
            (form.interest.value == null || form.interest.value.length == 0) ||
            (form.principal.value == null || form.principal.value.length == 0)) {
            return;
        }
 
        if (!checkNumber(form.payments, 1, 480, "# of payments") ||
            !checkNumber(form.interest, .001, 99, "Interest") ||
            !checkNumber(form.principal, 100, 10000000, "Principal") ||
            !checkNumber(form.downpayment, 0, form.principal.value, "Down payment")) {
            form.payment.value = "Invalid";
            return;
        }
 
        var i = form.interest.value;
       
        if (i > 1.0) {
            i = i / 100.0;
            form.interest.value = i;
        }
        i /= 12;
 
        var pow = 1;
        for (var j = 0; j < form.payments.value; j++)
            pow = pow * (1 + i);
        form.payment.value = ((form.principal.value - form.downpayment.value) * pow * i) / (pow - 1)
    }
 
    function clearForm(form) {
        form.payments.value = "";
        form.interest.value = "6";
        form.principal.value = "";
        form.downpayment.value = "";
    }
 
</SCRIPT>
 
 
 
 
 
----- Original Message -----
Sent: Monday, March 11, 2002 12:51 PM
Subject: Re: [CFTALKTor] Calculator

D you have a budget for this work?
 
Gustavo
----- Original Message -----
From: Sean King
Sent: Monday, March 11, 2002 11:33 PM
Subject: [CFTALKTor] Calculator

 
 
 
I would like to customize Ben Fortas calculator application so that the the user selects a radio button for the interest field giving him/her the option to select from 3 or more different interest rates. The rates should be hidden form the user and substituted with text fields. The other fields will operate as they do now in the program. 
 
For example:
 
There are 3 different interest rates. Say 8, 10 and 12%. The actual rates are hidden from the user but are represented by Mortgage1, Mortgage2 and Mortgage3. The user would click one of these options (say Mortgage1) using a radio button and the payment field would be updated using an 8% interest rate. If they select Mortgage2 the payment field would be updated for the interest rate associated with that option ( 10% in this case) ...and so on.
 
 
I would appreciate if you could help me with this.
 
 
Thanks
Sean King
 
 

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