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index.js
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index.js
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function calculateTip(event){
event.preventDefault();
let bill = document.getElementById('bill').value;
let serviceQuality = document.getElementById('serviceQuality').value;
let numOfPeople = document.getElementById('people').value;
if(bill == '' | serviceQuality == 0){
alert('Por favor, preencha os campos corretamente');
return;
}
if(numOfPeople == '' | numOfPeople <= 1){
numOfPeople = 1;
document.getElementById('each').style.display = 'none';
} else {
document.getElementById('each').style.display = 'block';
}
let total = (bill * serviceQuality) / numOfPeople;
total = total.toFixed(2);
document.getElementById('tip').innerHTML = total;
document.getElementById('totalTip').style.display = 'block';
}
document.getElementById('totalTip').style.display = "none";
document.getElementById('each').style.display = "none";
document.getElementById('tipsForm').addEventListener('submit', calculateTip);