程序實現(xiàn)微信朋友圈時間顯示效果：

1分鐘前，2分鐘前，···，59分鐘前，1小時前，2小時前，···，23小時前，一天前，2天前，2019-06-21 等等...

相關代碼如下：

getTime() {
    let start = '2019-6-21 22:41:00'
    let nowTime = new Date()
    let oldTime = new Date(start)
    let diff = Math.floor((nowTime - oldTime)/1000/60)
    let time = start
    
    if(diff <= 59){
        time = diff + '分鐘前'
    }else if(diff <= 60*24-1){
        time = Math.floor(diff / 60) + '小時前'
    }else if(diff <= 60*24*3-1){
        time = Math.floor(diff / 60 / 24) + '天前'
    }else{
        time = time.split(" ")[0]
    }
    return time
}