javascript
Meus codigos:
<!DOCTYPE html>
<html lang="pt-br">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!--CSS-->
<link rel="stylesheet" href="styles.css">
<title>Contador</title>
</head>
<body>
<div class="container">
<h1>Contador</h1>
<span id="valor">0</span>
<div class="button">
<button class="btn diminuir">Diminuir</button>
<button class="btn resetar">Resetar</button>
<button class="btn aumentar">Aumentar</button>
</div>
<!--JavaScript-->
<script src="script.js"></script>
</body>
</html>
let count = 0;
const valor = document.querySelector("#valor");
const btns = document.querySelectorAll(".btn");
btns.forEach(function (btn){
btn.addEventListener("click", function (e){
const styles = e.currentTarget.classList;
if (styles.contains("diminuir")){
count--;
} else if (styles.contains("aumentar")){
count++;
} else{
count = 0;
}
valor.textContent = count;
});
});