Reliable JS rounding numbers with toFixed(2) of a 3 decimal number

Question

I am simply trying to round up 1.275.toFixed(2) and I was expecting a return of 1.28, rather than 1.27.

Using various calculators and t

Answer 1

While I am a little late, this could help someone with the same requirement. If the value is a string, simply add an additional "1" to the end and your issue will be fixed. If input = 10.55 then it would become 10.551 which in turn would become 10.56.

This example uses jQuery

function toTwoDecimalPlaces(input) {
        var value = $(input).val();
        if (value != null) {
            value = parseFloat(value + "1").toFixed(2);
        }
        $(input).val(value);
}

Update: If the input is accepting whole numbers and/or numbers with 1 decimal place, then you will want to check how many decimal places have been used. If it is greater than the fixed amount then add the "1".

function toTwoDecimalPlaces(input) {
        var value = $(input).val();
        if (value.includes(".")) {
            var splitValue = value.split(".");
            if (splitValue[1].length > 2) {
                value = parseFloat(value + "1").toFixed(2);
            }
        }
        $(input).val(value);
}