对于标准时间转换为日常年月日时分秒标准格式补零的

 function getDateString(date) {
            var year = date.getFullYear().toString().padStart(4, "0");
            var month = (date.getMonth() + 1).toString().padStart(2, "0");
            var day = date.getDate().toString().padStart(2, "0");

            var hour = date.getHours().toString().padStart(2, "0");
            var minute = date.getMinutes().toString().padStart(2, "0");
            var second = date.getSeconds().toString().padStart(2, "0");
            return `${year}- ${month}-${day} ${hour}:${minute}:${second}`;
        }