Custom Events

Listen to calculator widget events for analytics and integration

The widget dispatches custom events that bubble from the host element, allowing you to integrate with analytics, tracking systems, or your existing JavaScript.

Event Reference

All events are dispatched on the widget’s host element and bubble up to document. Use standard addEventListener() to listen for them.

Event	Payload	When fired
cdn-calculator:ready	{ countries: Country[] }	Widget initialized and country data loaded
cdn-calculator:calculate	{ country, currency, gross, period }	User clicked calculate (before API request)
cdn-calculator:result	Result	Calculation completed successfully
cdn-calculator:view	{ view: 'form' | 'result' }	User switched between form and result views
cdn-calculator:error	ApiError	API request failed or validation error

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Event Details

cdn-calculator:ready

Fired when the widget is fully loaded and ready for user interaction.

JavaScript

mount.addEventListener('cdn-calculator:ready', e => {
  console.log('Widget ready with', e.detail.countries.length, 'countries');
});

cdn-calculator:calculate

Fired when user submits the form, before making the API request.

JavaScript

mount.addEventListener('cdn-calculator:calculate', e => {
  console.log('Calculating for', e.detail.country.name, 'at', e.detail.gross);
  analytics.track('salary_calculation_started', e.detail);
});

cdn-calculator:result

Fired when calculation completes successfully.

JavaScript

mount.addEventListener('cdn-calculator:result', e => {
  console.log('Total employer cost:', e.detail.totalEmployerCost);
});

cdn-calculator:view

Fired when user navigates between form and result views.

JavaScript

mount.addEventListener('cdn-calculator:view', e => {
  console.log('User switched to', e.detail.view, 'view');
});

cdn-calculator:error

Fired when an error occurs (invalid API key, network issues, etc.).

JavaScript

mount.addEventListener('cdn-calculator:error', e => {
  console.error('Widget error:', e.detail.message);
});

---

Integration Example

Google Analytics 4:

JavaScript

mount.addEventListener('cdn-calculator:result', e => {
  gtag('event', 'salary_calculated', {
    country: e.detail.country.code,
    gross_amount: e.detail.grossAmount.amount,
    employer_cost: e.detail.totalEmployerCost.amount
  });
});

---

Event Payload Structures

cdn-calculator:ready

JavaScript

{
  countries: [
    {
      code: "CO",
      name: "Colombia",
      regions: [
        { code: "AMA", name: "Amazonas" },
        { code: "ANT", name: "Antioquia" }
      ]
    }
  ]
}

cdn-calculator:calculate

JavaScript

{
  country: {
    code: "CO",
    name: "Colombia"
  },
  currency: {
    code: "COP",
    name: "Colombian Peso"
  },
  gross: 2000000,
  period: "monthly"
}

cdn-calculator:result

JavaScript

{
  grossAmount: {
    amount: 200000000,  // in cents
    currency: "COP"
  },
  netAmount: {
    amount: 142824527,
    currency: "COP"
  },
  deductions: [
    {
      name: "Pension Fund",
      isStatutory: true,
      amount: {
        amount: 8000000,
        currency: "COP"
      }
    }
  ],
  employerContributions: [
    {
      name: "Pension Fund",
      isStatutory: true,
      amount: {
        amount: 24000000,
        currency: "COP"
      }
    }
  ],
  totalEmployerCost: {
    amount: 43044000,
    currency: "COP"
  },
  country: {
    code: "CO",
    name: "Colombia"
  }
}

cdn-calculator:view

JavaScript

{
  view: "form" | "result"
}

cdn-calculator:error

JavaScript

{
  message: "Unable to load calculator. Please ensure your key is valid.",
  status: 401,
  code: "UNAUTHORIZED"
}

All monetary amounts are returned in cents to avoid floating-point precision issues. Divide by 100 to get the actual currency amount.