Method isString

src/AutoNumericHelper.js:75–77

* Return `true` if the given parameter is a String * * @param {*} str * @returns {boolean}

(str)

     * @returns {boolean}
     */
    static isString(str) {
        return (typeof str === 'string' || str instanceof String);
    }
    /**
     * Return `true` if the `value` is an empty string ''
     *