NodeJs获取两个日期间的所有日期

const moment = require( 'moment' );

const begin_date = '2017-12-12',
    end_date = '2018-01-19',
    arr = getAllDays( begin_date, end_date );

console.log( 'arr: ', arr );

function getAllDays( begin_date, end_date ) {
    const errArr = [],
        resultArr = [],
        dateReg = /^[2]\d{3}-[01]\d-[0123]\d$/;

    if ( typeof begin_date !== 'string' || begin_date === '' || !dateReg.test( begin_date ) ) {
        return errArr;
    }

    if ( typeof end_date !== 'string' || end_date === '' || !dateReg.test( end_date ) ) {
        return errArr;
    }

    try {
        const beginTimestamp = Date.parse( new Date( begin_date ) ),
            endTimestamp = Date.parse( new Date( end_date ) );

        // 开始日期小于结束日期
        if ( beginTimestamp > endTimestamp ) {
            return errArr;
        }

        // 开始日期等于结束日期
        if ( beginTimestamp === endTimestamp ) {
            resultArr.push( begin_date );
            return resultArr;
        }

        let tempTimestamp = beginTimestamp,
            tempDate = begin_date;


        // 新增日期是否和结束日期相等， 相等跳出循环
        while ( tempTimestamp !== endTimestamp ) {
            resultArr.push( tempDate );

            // 增加一天
            tempDate = moment( tempTimestamp )
                .add( 1, 'd' )
                .format( 'YYYY-MM-DD' );

            // 将增加时间变为时间戳
            tempTimestamp = Date.parse( new Date( tempDate ) );
        }

        // 将最后一天放入数组
        resultArr.push( end_date );
        return resultArr;

    } catch ( err ) {
        return errArr;
    }
}