Please implement the following only using Javascript.
design a cash register class that can be used with inventory item class. The cash register class needs to:
1. ask user for item and quantity being purchased.
2. get the items cost from inventory item object
3. add 30% profit to the cost to get the items unit price
4. multiply the unit price times the quantity being purchased to get purchase subtotal
5. compute a 6% sales tax on the subtotal to get the purchase total
6. display the purchase subtotal, tax, and total to the screen
7. subtract the quantity being purchased from variable of inventory item class object
Thank you for all of your help. remember Only Javascript can be used.
Please implement the following only using Javascript. design a cash register class that can be used...
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