How to listen for segment value (__/__/___) change in input[type="date"]

Question

Input[type="date"] returns a value only if all the segments( / /___) are filled with proper values. Is there a way to know if any of the segments is filled?

Answer 1

No, the values that you see (eg 05/02/ ) only exist in the UI layer. The value of the DOM element becomes "" anytime the parsing as a Date fails, and it is set to "yyyy-mm-dd" anytime the parsing as a Date succeeds.

The spec: https://dev.w3.org/html5/spec-LC/states-of-the-type-attribute.html#date-state

Quote regarding parsing/validation:

The value sanitization algorithm is as follows: If the value of the element is not a valid date string, then set it to the empty string instead.