This web app is just for studying and may have some bugs. I use Vue.js and Vuex to build this app and firebase to store the invoice data.
click the "New Invoice" button to create a new invoice
and you will see a sidebar like this. then you can fill those blanks and save or upload the invoice.
you can click any invoice in the Home view and an invoice view will show up. you can edit it at your will or just discard it.
you can click the filter button to display invoices of a specific status.
install the dependencies
npm install
run the app
npm run serve