Minimal setup for dateinput
Call $(":date").dateinput() and your <input type="date" />'s will work. Here's one.
You can navigate between days with your Arrow Keys or with VIM keyboard shortcuts HJKL. Page UP/DOWN navigates between months and Enter selects the day. The Home key will navigate to the current day.
Here is the entire code for the above example:
You need to place the script block after the HTML code or you can alternatively use jQuery's $(document).ready to execute the script as soon as the webpage's Document Object Model (DOM) has been loaded. Read more about that from the User's Manual.