Method isFunction

src/AutoNumericHelper.js:196–198

* Return `true` if the parameter is a function. * * @param {function} func * @returns {boolean}

(func)

     * @returns {boolean}
     */
    static isFunction(func) {
        return typeof func === 'function';
    }

    /**
     * Return `true` is the string `str` contains the string `needle`