how to get numbers from a form text field using BreezingForms in Joomla?

[SilverNodashi]

Does anyone know, or use BreezingForms, on Joomla?


How do I get only numbers from a text field? i.e. a user types in R40, how do I only get the "40" part of it?

I tried the following, but it just gives me "NaN" as response:

function ff_Total12_validation(element, message)
{
    ff_wendy_calculate12();
    if (element.value==0) {
        ff_validationFocus('Price12');
        return message;
    } // if
    return '';
} // ff_Total12_validation

function ff_wendy_calculate12()
{
    var amount12 = 0;
    var order12;
    var price12;

    qty12 = Number(ff_getElementByName('QTY12').value);
    price12 = Number(ff_getElementByName('Price12').value);
    if (qty12 != '') amount12 += parseInt(qty12) * Number(parseInt(price12));

    ff_getElementByName('Total12').value = Math.round(amount12*100)/100;
    ff_OrderTotalAmount_validation();

} // ff_wendy_calculate12

A few google searches suggest that the "Number()" function could do this, but it doesn't seem to work. I'm using Joomla 1.5.15 + BreezingForms 1.7.1 Stable (build 730) [Trinity]

 

[jonno_081]

Is this PHP or Javascript? It looks like Javascript, but you've said PHP?

Anyway, in Javascript, the Number function does not strip out the letters, it only converts a character representation of a number into a number, ie, the string "123" into the number 123.

Write your own function to strip out non numeric characters before passing to Numbers();

If you need help with that just shout.