将20180608141920转成date格式

var dateString="20180608141920";

var formatedDate = dateString.replace( /(\d{4})(\d{2})(\d{2})(\d{2})(\d{2})(\d{2})/,'$1/$2/$3 $4:$5:$6');

console.log(formatedDate)

////结果就是

2018/06/08 14:19:20