I need help with modifing following program using javascript

The Assignment Modify the following web document: sandwich shop htm Your job is to write the function that will confirm what the user ordered and to output the total cost of their order. You should output this information to the

section called 'results For example, if the user chose hamburger, and checked the boxes for both avocado and cheese, but selected 'no for chips, you would output: You ordered a hamburger. You wanted cheese. lou wanted avocado. You did not want chips. The cost is S10.74. Output to 2 decimal places (since this is a monetary amount) .Using a contextual selector, style the results section so that any text inside is displayed in italics