方法
var dateStr = '20180418230102';
var reg = /(\d{4})(\d{2})(\d{2})(\d{2})(\d{2})(\d{2})/;
dateStr = dateStr.replace(reg, '$1-$2-$3 $4:$5:$6');
"2018-04-18 23:01:02"
最后修改：2021 年 11 月 10 日
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