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88 lines (83 loc) · 2.35 KB
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<!DOCTYPE html>
<html lang="pt">
<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>Mostrar uma sequência decrescente de números</title>
<style>
body {
background: #84ffff;
font: normal 20pt times;
}
header {
color: rgb(15, 15, 15);
text-align: center;
}
div.entrada {
background: #ffcdd2;
border-radius: 13px;
padding: 15px;
width: auto;
margin: auto;
text-align: center;
box-shadow: 5px 5px 10px rgba(0, 0, 0, 0.384);
}
div.saída {
background: #ffffff;
border-radius: 13px;
padding: 15px;
width: auto;
margin: auto;
text-align: center;
box-shadow: 5px 5px 10px rgba(0, 0, 0, 0.384);
}
IMG.abaixo {
display: block;
margin-left: auto;
margin-right: auto
}
footer {
color: black;
text-align: center;
font-style: oblique;
}
</style>
</head>
<body>
<header>
<h1>Visualize uma sequência decrescente
</h1>
</header>
<section>
<div class="entrada">
<p >
Digite o primeiro número: <input style="font: normal 20pt times; width: 70px; height: 30px;" type="number" id="txtini">
</p>
<p style="text-align: center;">
<input style="font: normal 20pt times;" type="button" value="Vamos contar!" onclick="Congatem()">
</p>
</div>
<div class="saída" id="saida">
</div>
</section>
<footer>
<p>© BrunoCastro </p>
</footer>
<script>
function Congatem() {
const entrada1 = window.document.querySelector('input#txtini')
var inicio = Number(entrada1.value)
let contador = 0
let soma = 0
var saida = window.document.querySelector('div#saida')
saida.innerHTML = "Inciando a contagem: <br>"
for (var i = inicio; inicio > -1 ; inicio -=1) {
contador += 1
soma = soma + inicio
saida.innerHTML += `${inicio} 🕴`
}
saida.innerHTML += `<p>O somatório = ${soma}</p><p>A média = ${soma/contador}</p>`
}
</script>
</html>