Wielka Orkiestra

wielkaorkiestra.js

// simple JS script to parse and sum of donations for the chosen city
// usage
//  1. copy&paste below script
//  2. choose the city manually 
//  3. then call e.g. `sum().then(alert)` or sum().then(sum => { console.log(sum); })

sumDonations = () => {
  return [...document.querySelectorAll('.institution .value').values()].map(e => parseFloat(e.innerText)).reduce((a,b) => a + b, 0)
}

formatCurrency = (input, locale = 'pl-PL', currencyCode = 'PLN') => {
  return new Intl
    .NumberFormat(locale, { style: 'currency', currency: currencyCode })
    .format(input);
}

sum = () => {
  return Promise
    .resolve(sumDonations())
    .then(sum => formatCurrency(sum))
}