Examine the given HTML$5$ code below. Then, complete the JavaScript functions for the given Shopping Cart webpage for a$"$camera store". A sample design template and output of the shopping cart is given below. For the given template, the user will be able to select any of the products by using checkboxes. User will be able to select the quantity $[$from $1$ to $3]$Welcome to Camera Storeof the product. You need to display the price of each product when the product and quantity is selected. You will calculate sub$-$total when "Sub$-$Total" button is clicked. You need to calculateGrand Total $(=$Total Cost $-$ Discount $(15\%))$ when "Grand Total" button is clicked.