js快速获取当前时间并且返回想要的格式

Posted 2021-05-15 平凡是最美荡气回肠

function backCurrentTime (type) {
    let currentTime=new Date( new Date() + 8 * 3600 * 1000 ).toJSON().substr(0,19).replace("T"," ");
    if(type==\'y\'){
        return currentTime.substr(0,4)
    }else if(type==\'m\'){
        return currentTime.substr(5,2)
    }else if(type==\'d\'){
        return currentTime.substr(8,2)
    }else if(type==\'y-m\'){
        return currentTime.substr(0,7)
    }else if(type==\'y-m-d\'){
        return currentTime.substr(0,10)
    }else if(type==\'y-m-d-h-m\'){
        return currentTime.substr(0,16)
    }else{
        return currentTime
    }
}
console.log(\'当前年\',backCurrentTime(\'y\') )
console.log(\'当前月\',backCurrentTime(\'m\') )
console.log(\'当前天\',backCurrentTime(\'d\') )
console.log(\'当前年-月-天\',backCurrentTime(\'y-m-d\') )
console.log(\'当前年-月-天-时-分\',backCurrentTime(\'y-m-d-h-m\') )

主要是利用toJSON转格林威治时间 在+8小时得到就是北京时间
参考地址：https://www.cnblogs.com/youwei716/p/14088544.html