js日期格式转换

/**
     *
     * @param date :Fri Oct 09 2015 15:48:21 GMT+0800 (中国标准时间)
     * @returns {string}
     */
    function myfomartdate(date) {
        var datestr = new Date(date).toLocaleDateString();
        var reg = new RegExp("/", "g");
        var datefomart = datestr.replace(reg, "-");
        return datefomart;
    }