moment.js validating invalid date “2013-10-311”

Question

Running moment.js, 2.2.1

moment(\"2010-10-319\", [\"YYYY-MM-DD\"]).isValid()

... returns true, and the moment object would be

Answer 1

Moment.js version 2.3.0 added strict parsing.

moment("2010-10-319", ["YYYY-MM-DD"]).isValid();       // true
moment("2010-10-319", ["YYYY-MM-DD"], true).isValid(); // false

moment("2010-10-31a", ["YYYY-MM-DD"]).isValid();       // true
moment("2010-10-31a", ["YYYY-MM-DD"], true).isValid(); // false

var formats = ["MM/DD/YYYY", "MM-DD-YYYY", "YYYY-MM-DD"];

moment("2010-10-319",  formats).isValid(); // true
moment("2010-10-3199", formats).isValid(); // false

moment("2010-10-319",  formats, true).isValid(); // false
moment("2010-10-3199", formats, true).isValid(); // false

moment("2010-10-319qr", formats).isValid();       // true
moment("2010-10-319qr", formats, true).isValid(); // false

Answer 2

create an Issue on the Git Repository from momentjs https://github.com/moment/moment/ the best way to handle this error.

Answer 3

If the user is not selecting any date, then it is showing as invalid date. It is wrong, it should show no date or date not selected. To change that in moment.js you can change that to nodate instead of invalid date.