Currency Converter

Small but production-like app with form validation, conversion logic and API integration for real rates.

JavaScript
HTML5
SCSS
REST API

Implemented two-way conversion and the calculation logic.
Added input validation and formatting.
Integrated the frontend with the backend API.

export function convertCurrency(amount, rate, precision = 2) {
  if (!Number.isFinite(amount) || !Number.isFinite(rate)) {
    return '0.00';
  }

  return (amount * rate).toFixed(precision);
}

Amount120.00

Rate89.51

Result: 10 741.20