Please use javascript knowledge to solve these,give me the html and javascript and css

1.Create an html and JavaScript file to transfer or copy data from one field to another based on user indicating they should have the same value - 5marks

Example: Shipping Address and Billing Address

Sample:

2.Create a custom browser-based validation feedback using the following

a. checkValidity() and setCustomValidity() methods 2.5 marks

b. CSS :invalid and :valid pseudo-classes 5 marks

3.selectedIndex = -1 5 marks

4.use placeholder 2.5 marks

To change properties of form elements based on validity status.

Sample: ENTRY First Name firstname Last Name lastname Address lastname Gender Male Phone lastname Year 2015 V ENTRY 2 same as Entry2 First Name firstname Last Name lastname Address lastname Gender Male Phone lastname Year 2015 v Submit S