How to make such a calculator in vue?

Question

JavaScript

Tell me, step by step where to dig and how to do it, please

Answer 1

1. data array of options with sub options
2. data array of checked options with sub options
3. List of options ul -> li v-for
4. total region List of checked options ul -> li v-for
5. copy button handler from the list of options to the list of checked options
6. change the style of the button in the list of options style pp 5
7. computed property total. Iterates through the list of checked options and sums up the result
8. send request handler. Forms an application based on the selected options, based on a template, by the way, it is better to add the name, phone and mail fields