Des recettes faciles, des plaisirs gourmands
document.addEventListener('DOMContentLoaded', function () {
const calculateBtn = document.getElementById('calculateBtn');
const printBtn = document.getElementById('printBtn');
const saveBtn = document.getElementById('saveBtn');
const resultDiv = document.getElementById('result');
calculateBtn.addEventListener('click', () => {
const goal = document.querySelector('input[name="goal"]:checked').value;
const weight = parseFloat(document.getElementById('weight').value);
const height = parseFloat(document.getElementById('height').value);
const age = parseInt(document.getElementById('age').value);
const gender = document.getElementById('gender').value;
if (
isNaN(weight) || weight <= 0 ||
isNaN(height) || height <= 0 ||
isNaN(age) || age <= 0 ||
(gender !== 'male' && gender !== 'female')
) {
alert('Merci de remplir tous les champs correctement.');
return;
}
// Calcul BMR (Formule Mifflin-St Jeor simplifiée)
let bmr;
if (gender === 'male') {
bmr = 10 * weight + 6.25 * height - 5 * age + 5;
} else {
bmr = 10 * weight + 6.25 * height - 5 * age - 161;
}
// Ajustement selon l’objectif
let calories;
if (goal === 'weight_loss') {
calories = bmr - 500; // déficit calorique modéré
} else {
calories = bmr + 500; // surplus calorique modéré
}
calories = Math.round(calories);
resultDiv.textContent = `Votre besoin calorique quotidien estimé est : ${calories} kcal.`;
// Afficher les boutons
printBtn.style.display = 'inline-block';
saveBtn.style.display = 'inline-block';
});
printBtn.addEventListener('click', () => {
window.print();
});
saveBtn.addEventListener('click', () => {
const textToSave = resultDiv.textContent;
const blob = new Blob([textToSave], { type: 'text/plain;charset=utf-8' });
const link = document.createElement('a');
link.href = URL.createObjectURL(blob);
link.download = 'calories-estimees.txt';
link.click();
});
});
