Method _trimLeadingAndTrailingZeros

src/AutoNumeric.js:6218–6244

* Removes any zeros in excess in the front and back of the given `value`, according to the `settings`. * This also manages the cases where the decimal point is on the far left or far right of the `value`. * * @param {string} value * @returns {string|null}

(value)

     * @returns {string|null}
     */
    _trimLeadingAndTrailingZeros(value) {
        // Return the empty string is the value is already empty. This prevents converting that value to '0'.
        if (value === '' || value === null) {
            return value;
        }

        if (this.settings.leadingZero !== AutoNumeric.options.leadingZero.keep) {
            if (Number(value) === 0) {
                // Return '0' if the value is zero
                return '0';
            }

            // Trim the leading zeros, while leaving one zero to the left of the decimal point if needed
            value = value.replace(/^(-)?0+(?=\d)/g,'$1');
        }

        //TODO remove this from that function and use `trimPaddedZerosFromDecimalPlaces()` instead
        // Trim the trailing zeros after the last decimal place not being a zero (i.e. 1.2300 -> 1.23)
        if (AutoNumericHelper.contains(value, '.')) {
            value = value.replace(/(\.[0-9]*?)0+$/, '$1');
        }

        // Remove any trailing decimal point
        value = value.replace(/\.$/, '');

        return value;
    }

    /**
     * Generate the name for the persistent stored data variable