Method _getFormHandlerKey

src/AutoNumeric.js:1462–1473

* Return the form handler key name from the parent form element, for the global form handler list. * * @returns {string} * @private

()

     * @private
     */
    _getFormHandlerKey() {
        if (!this._hasFormHandlerFunction()) {
            AutoNumericHelper.throwError(`Unable to retrieve the form handler name`);
        }

        const formHandlerName = this.parentForm.dataset.anFormHandler;
        if (formHandlerName === '') {
            AutoNumericHelper.throwError(`The form handler name is invalid`);
        }

        return formHandlerName;
    }

    /**
     * Return the 'submit' event handler function used for the parent form.