Problem 1: Develop a page to store and retrieve a value “43854” in variable “W” using a hidden field. Then, implement code to alter W at the client side and check if alteration is possible.
Problem 2: Create a web form with a list box containing customer names (text) and their IDs (value). Transfer selected item using query string to another page. Add more form elements and transfer all data using query string.
Problem 3: On the first page access, create a persistent cookie storing the customer’s name and access time. When revisiting, retrieve and display the cookie data.