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  1. #1
    New to the CF scene
    Join Date
    Jul 2005
    Posts
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    What's wrong with my script?

    I need form to average. Right now it only shows weighted total.


    </script>
    <script type="text/javascript" src="config.js"></script>

    <script Language="JavaScript">self.moveTo(0,0);self.resizeTo(screen.availWidth,screen.availHeight);</script>

    <script language="JavaScript" type="text/javascript">
    <!--

    function CalculateTotal(frm) {
    var order_total = 0

    // Run through all the form fields
    for (var i=0; i < frm.elements.length; ++i) {

    // Get the current field
    form_field = frm.elements[i]

    // Get the field's name
    form_name = form_field.name

    // Is it a "product" field?
    if (form_name.substring(0,4) == "PROD") {

    // If so, extract the price from the name
    item_price = parseFloat(form_name.substring(form_name.lastIndexOf("_") + 1))

    // Get the quantity
    item_quantity = parseInt(form_field.value)

    // Update the order total
    if (item_quantity >= 0) {
    order_total += item_quantity * item_price
    }
    }
    }

    // Display the total rounded to two decimal places
    frm.TOTAL.value = round_decimals(order_total, 2)
    }

    function round_decimals(original_number, decimals) {
    var result1 = original_number * Math.pow(10, decimals)
    var result2 = Math.round(result1)
    var result3 = result2 / Math.pow(10, decimals)
    return pad_with_zeros(result3, decimals)
    }

    function pad_with_zeros(rounded_value, decimal_places) {

    // Convert the number to a string
    var value_string = rounded_value.toString()

    // Locate the decimal point
    var decimal_location = value_string.indexOf(".")

    // Is there a decimal point?
    if (decimal_location == -1) {

    // If no, then all decimal places will be padded with 0s
    decimal_part_length = 0

    // If decimal_places is greater than zero, tack on a decimal point
    value_string += decimal_places > 0 ? "." : ""
    }
    else {

    // If yes, then only the extra decimal places will be padded with 0s
    decimal_part_length = value_string.length - decimal_location - 1
    }

    // Calculate the number of decimal places that need to be padded with 0s
    var pad_total = decimal_places - decimal_part_length

    if (pad_total > 0) {

    // Pad the string with 0s
    for (var counter = 1; counter <= pad_total; counter++)
    value_string += "0"
    }
    return value_string
    }


    //-->
    </script>

  • #2
    Regular Coder
    Join Date
    Dec 2002
    Location
    a bit west of pittsburgh
    Posts
    236
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    Code:
    function CalculateTotal(frm){
    var itemCount=0;
    
    ...
    
    for (var i=0; i < frm.elements.length; ++i, ++itemCount)
    
    ...
    
    frm.TOTAL.value = round_decimals((order_total/itemCount), 2)
    alternatively, you can omit the itemCount variable and use 'i' to keep count, and divide by i.
    Last edited by joeframbach; 07-08-2005 at 08:31 PM.


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