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@ermogenes
Created November 11, 2022 01:30
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Aula 10/11/2022
<!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">
<title>Aula DOM</title>
<style>
form > * {
display: block;
}
</style>
</head>
<body>
<h1>Aula DOM</h1>
<form>
<label for="nota1">Nota 1</label>
<input type="text" id="nota1" name="nota1">
<label for="nota2">Nota 2</label>
<input type="text" id="nota2" name="nota2">
<button id="calcula">Calcular Média</button>
<label for="media">Média</label>
<input type="text" readonly id="media" name="media">
</form>
<h2>Histórico</h2>
<div id="historico"></div>
<script src="index.js"></script>
</body>
</html>
const cliqueNoBotao = (event) => {
event.preventDefault();
const campoNota1 = document.getElementById('nota1');
const campoNota2 = document.querySelector('#nota2');
const nota1 = parseFloat(campoNota1.value);
const nota2 = parseFloat(campoNota2.value);
const media = (nota1 + nota2) / 2;
const campoMedia = document.getElementById('media');
campoMedia.value = media;
// histórico
const historico = document.getElementById('historico');
const mensagem = `<div>A média entre ${nota1} e ${nota2} é ${media}.</div>`;
historico.insertAdjacentHTML('afterbegin', mensagem);
};
const iniciar = () => {
const botao = document.getElementById('calcula');
botao.addEventListener('click', cliqueNoBotao);
};
document.addEventListener('DOMContentLoaded', iniciar);
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