Hello freeCodeCamp community! I’m super excited to join this awesome forum as a beginner coder. I’ve been working through the freeCodeCamp JavaScript curriculum and wanted to share a small project idea I’ve been tinkering with, hoping to get some feedback and learn from you all!
I’m building a simple fuel cost calculator in JavaScript for road trips (I love driving and saving gas 
). The idea is to take inputs like distance (km), fuel efficiency (km/liter), and fuel price ($/liter) to calculate the total cost. Here’s a basic version I coded:
function calculateFuelCost(distance, efficiency, pricePerLiter) {
const fuelNeeded = distance / efficiency;
const totalCost = fuelNeeded * pricePerLiter;
return totalCost.toFixed(2);
}
// Example usage
console.log(calculateFuelCost(400, 15, 1.5)); // Outputs: 40.00
It works, but I want to make it more interactive, maybe with an HTML form and real-time updates in the browser. I’m thinking of adding features like:
- Handling multiple fuel types (e.g., gasoline, diesel).
- Saving trip history using localStorage.
- Showing a breakdown of costs (e.g., per 100 km).
As a newbie, I’m not sure about best practices for structuring this or making it user-friendly. Should I use vanilla JS or try a framework like React? Also, any tips on handling user inputs to avoid errors (like negative numbers)? I’d love to hear how you’d approach this or any cool features you’d add to a fuel calculator!
Thanks in advance for any advice, and super happy to be here learning with you all!