Method _onFocus

src/AutoNumeric.js:6418–6423

* Handler for the 'focus' event. * We update the info of the focused state in the `this.isFocused` variable when the element gets focused. * @private

()

     * @private
     */
    _onFocus() {
        if (this.settings.isCancellable) {
            // Save the current unformatted value for later use by the 'cancellable' feature
            this._saveCancellableValue();
        }
    }

    /**
     * Handler for the 'focusin' event.