HTML5 pattern for formatting input box to take date mm/dd/yyyy?

Question

I used jQuery datepicker and I want to restrict my input field with a HTML5 pattern if a user, instead of getting the date from jQuery datepicker, types the date.

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Answer 1

pattern="[0-9]{1,2}/[0-9]{1,2}/[0-9]{4}"

This is pattern to enter the date for textbox in HTML5.
The first one[0-9]{1,2} will take only decimal number minimum 1 and maximum 2.
And other similarly.