转换时间戳

/**
 * @description 根据时间戳获取指定格式时间
 * @param {number} tamp 时间戳
 * @param {string} format 时间格式 如：YYYY-MM-DD hh:mm:ss
 * @param {boolean} padStart 是否填充两位数字不足补零
 * @return {string}
 */
export function getTime(tamp = new Date().getTime(), format, padStart = true) {
    let unitArr = ['YYYY', 'MM', 'DD', 'hh', 'mm', 'ss'];
    let date = new Date(tamp);
    let timeObj = {};
    let timeStr = format || 'YYYY-MM-DD hh:mm:ss';
    timeObj.YYYY = padStart ? String(date.getFullYear()) : date.getFullYear();
    timeObj.MM = padStart
        ? String(date.getMonth() + 1).padStart(2, '0')
        : date.getMonth() + 1;
    timeObj.DD = padStart
        ? String(date.getDate()).padStart(2, '0')
        : date.getDate();
    timeObj.hh = padStart
        ? String(date.getHours()).padStart(2, '0')
        : date.getHours();
    timeObj.mm = padStart
        ? String(date.getMinutes()).padStart(2, '0')
        : date.getMinutes();
    timeObj.ss = padStart
        ? String(date.getSeconds()).padStart(2, '0')
        : date.getSeconds();
    unitArr.forEach(item => {
        timeStr = timeStr.replace(item, timeObj[item]);
    });
    return timeStr;
}