Created
May 27, 2019 00:09
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Fatorial simples em JS/jQuery
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <meta http-equiv="X-UA-Compatible" content="ie=edge"> | |
| <title>Ex21</title> | |
| </head> | |
| <body> | |
| <h1>Fatorial</h1> | |
| <div> | |
| <input id="input" type="number"> | |
| <button id="btn-calc">Calcular</button> | |
| </div> | |
| <div id="resultado"></div> | |
| <script | |
| src="https://code.jquery.com/jquery-3.4.1.min.js" | |
| integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" | |
| crossorigin="anonymous"></script> | |
| <script> | |
| function fatorial(n) { | |
| if (n > 0) | |
| return n * fatorial(n - 1); | |
| else | |
| return 1; | |
| } | |
| $('#btn-calc').click(function() { | |
| let input = parseInt($('#input').val()); | |
| if (!isNaN(input)) | |
| $('#resultado').text(input + "! = " + fatorial(input)); | |
| else | |
| $('#resultado').text("O valor entrado não é um número..."); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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