JavaScript implementation: how to write beautiful conditional expression>>>

The reason for the error is very simple, the reason is repeated

For example, date format:

Correct: to_ DATE(‘2012-07-03 13:04:58’, ‘yyyy-MM-dd hh24:mi:ss’)

Error: to_ Date (‘2012-07-03 13:04:58 ‘,’yyyy MM DD hh24: Mi: DD’) DD is a duplicate

Error: to_ Date (‘2012-07-03 13:04:58 ‘,’yyyy MM DD hh24: mm: Ss’) mm is repeated

Error: to_ Date (‘2012-07-03 13:04:58 ‘,’yyyy MM DD hh24: mm: DD’) DD, mm is repeated