::placeholder CSS pseudo-element
The ::placeholder pseudo-element represents placeholder text in an input field: text that represents the input and provides a hint to the user on how to fill out the form. For example, a date-input field might have the placeholder text `YYYY-MM-DD` to clarify that numeric dates are to be entered in year-month-day order.
Input Method Editor API
Provides scripted access to the Input Method Editor (IME). An IME is often used to input characters from East Asian languages by typing roman characters and selecting from the resulting suggestions.
Date and time input types
Form field widgets to easily allow users to enter a date, time or both, generally by using a calendar/time input widget. Refers to supporting the following input types: `date`, `time`, `datetime-local`, `month` & `week`.
htmlinputelement api: formnovalidate
htmlinputelement api: showpicker: `datetime-local` input
htmlinputelement api: showpicker: `date` input
htmlinputelement api: valueasdate
htmlinputelement api: willvalidate
html element: input: formnovalidate
html element: input: `type="date"`
html element: input: `type="datetime-local"`