请问各位小哥哥怎么分割日期时间

Question

这个是后台返回的日期时间createTime: "20210915163538"
想要转换成 2009-12-30 13:28:29 这样的格式

Answer 1

正则替换

"20210915163538".replace(/(\d{4})(\d{2})(\d{2})(\d{2})(\d{2})(\d{2})/,'$1-$2-$3 $4:$5:$6')
'2021-09-15 16:35:38'

Answer 2

用 moment.js 吧，你再需要把 Date 转回 String 时也方便：

let date = moment('20210915163538', 'YYYYMMDDHHmmss');

http://momentjs.cn/docs/parsi...

Answer 3

  const numbertime = '20210915163538'
  const year = numbertime.slice(0,4)
  const month = numbertime.slice(4,6)
  const day = numbertime.slice(6,8)
  console.log(year,month,day);