In some browsers, months or days with no leading zeroes may produce an error:
const d = new Date("2015-3-25");
The behavior of "YYYY/MM/DD" is undefined.
Some browsers will try to guess the format. Some will return NaN.
const d = new Date("2015/03/25");
The behavior of "DD-MM-YYYY" is also undefined.
Some browsers will try to guess the format. Some will return NaN.
const d = new Date("25-03-2015");
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