日期和时间的格式化

项目中经常会遇到日期和时间的格式化问题，话不多说，直接上代码。
1.日期格式化（yyyy-MM-dd）：

function getFormatDate (data) {
    let date  = new Date(data);
    let year = date.getFullYear();    let month = date.getMonth() + 1;    let strDate = date.getDate();    if (month >= 1 && month <= 9) {        month = '0' + month;    }    if (strDate >= 0 && strDate <= 9) {        strDate = '0' + strDate;    }    return [year, month, strDate].join('-');
}

2.时间格式化 （yyyy-MM-dd hh:mm:ss）:

function getFormatTime (data) {
    let date  = new Date(data);
    let year = date.getFullYear();    
    let month = date.getMonth() + 1;    
    let strDate = date.getDate();  
    let hour = date.getHours();    let minute = date.getMinutes();    let second = date.getSeconds();  
    if (month >= 1 && month <= 9) {        
        month = '0' + month;    
    }    
    if (strDate >= 0 && strDate <= 9) {        
        strDate = '0' + strDate;    
    }    
    if (hour >= 0 && hour <= 9) {        hour = '0' + hour;    }    if (minute >= 0 && minute <= 9) {        minute = '0' + minute;    }    if (second >= 0 && second <= 9) {        second = '0' + second;    }
    return [year, month, strDate].join('-') + ' ' + [hour, minute, second].join(':');
}