Update to handle small steps - ie: 0.0000001

[ebouwsema]

I was having issues with very, very small step increments. Updated so that the code now will handle small steps by multiplying by that step amount to convert to a handleable number.

Example:
var testObj = ko.observable('')
.extend({ step: 0.00000003 });

testObj(0.00001115);
    testObj.isValid() != true;

[gtripoli]

Hi,
I solved it this way

validation.rules['step'] = {
        validator: function (value, step) {
            var values = (value).toString().split(".");
            var steps = (step).toString().split(".");

            if (kv.utils.isEmptyVal(val) || step === 'any') { return true; }

            if (values.length <= 1 && steps.length <= 1) {
                return (value % step) == 0;
            }

            var decimals = (values.length > 1) ? values[1].split("").length : steps[1].split("").length;

            var multiplier = 10 ** decimals;

            return Math.round(value * multiplier) % (step * multiplier) < 1
        },
        message: 'The value must increment by {0}.'
    };

https://jsfiddle.net/v5zm18s7/1/