selectNumber() {
        //TODO Make sure the selection is ok when showPositiveSign is set to `true` (select the negative sign, but not the positive one)
        const unformattedValue = AutoNumericHelper.getElementValue(this.domElement);
        const valueLen = unformattedValue.length;
        const currencySymbolSize = this.settings.currencySymbol.length;
        const currencySymbolPlacement = this.settings.currencySymbolPlacement;
        const negLen = (!AutoNumericHelper.isNegative(unformattedValue, this.settings.negativeSignCharacter))?0:1;
        const suffixTextLen = this.settings.suffixText.length;

        let start;
        if (currencySymbolPlacement === AutoNumeric.options.currencySymbolPlacement.suffix) {
            start = 0;
        } else if (this.settings.negativePositiveSignPlacement === AutoNumeric.options.negativePositiveSignPlacement.left &&
            negLen === 1 && currencySymbolSize > 0) {
            start = currencySymbolSize + 1;
        } else {
            start = currencySymbolSize;
        }

        let end;
        if (currencySymbolPlacement === AutoNumeric.options.currencySymbolPlacement.prefix) {
            end = valueLen - suffixTextLen;
        } else {
            switch (this.settings.negativePositiveSignPlacement) {
                case AutoNumeric.options.negativePositiveSignPlacement.left:
                    end = valueLen - (suffixTextLen + currencySymbolSize);
                    break;
                case AutoNumeric.options.negativePositiveSignPlacement.right:
                    if (currencySymbolSize > 0) {
                        end = valueLen - (currencySymbolSize + negLen + suffixTextLen);
                    } else {
                        end = valueLen - (currencySymbolSize + suffixTextLen);
                    }
                    break;
                default :
                    end = valueLen - (currencySymbolSize + suffixTextLen);
            }
        }

        AutoNumericHelper.setElementSelection(this.domElement, start, end);

        return this;
    }
Select only the numbers in the formatted element content, leaving out the currency symbol, whatever the value of the `selectNumberOnly` option

@returns {AutoNumeric}