Created
July 23, 2020 22:20
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Plantão Extra - Event Listeners
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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"> | |
| <title>Document</title> | |
| </head> | |
| <body> | |
| <div id="resposta"></div> | |
| <input id="num1" /> <br> | |
| <input id="num2" /> <br> | |
| <a href="#" id="soma" class='operador'>Somar</a> | |
| <a href="#" id="mult" class='operador'>Multiplicar</a> | |
| <script> | |
| const botoes = document.querySelectorAll(".operador"); | |
| const input1 = document.querySelector("#num1"); | |
| const input2 = document.querySelector("#num2"); | |
| for (let index = 0; index < botoes.length; index++) { | |
| botoes[index].addEventListener('click', calcular); | |
| } | |
| function calcular(event) { | |
| let operacao = event.target.id; | |
| let resultado = 0; | |
| if (operacao == 'soma') { | |
| resultado = parseInt(input1.value) + parseInt(input2.value); | |
| } else { | |
| resultado = parseInt(input1.value) * parseInt(input2.value); | |
| } | |
| document.querySelector("#resposta").innerHTML = resultado; | |
| } | |
| </script> | |
| </body> | |
| </html> |
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