Date validation on input was broken #559
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…turns false, unlike isNaN('Invalid Date')
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Valid date validation on input is broken.
This is because Number.isNaN('Invalid Date') returns false (Number.isNaN returns true only if the parameter is NaN), unlike isNaN('Invalid Date').
See this for more information:
https://stackoverflow.com/questions/1353684/detecting-an-invalid-date-date-instance-in-javascript
Currently, if you dropdown a daterange, select a date and then manually modify it to an invalid date (say, deleting a digit from the month), the entire dropdown calendar will show invalid date or Inv...
This pull request fixes this.