(displayweekday.html) Write a program that asks the user to enter a weekday number (0 - Sunday, 1 - Monday, etc.) through a prompting box and displays the corresponding weekday name in an alert box. If the user enters an invalid number, display an appropriate message and ask the user to try again. You must use a switch block. (displayweekday.html) Write a program that asks the user to enter a weekday number (0 - Sunday, 1 - Monday, etc.) through a prompting box and displays the corresponding weekday name in an alert box. If the user enters an invalid number, display an appropriate message and ask the user to try again. You must use a switch block