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Counter APP 본문

Javascript

Counter APP

HiroDaegu 2023. 2. 17. 00:12
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<!DOCTYPE html>
<html lang="ko">

<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>COUNTER APP</title>
    <link rel="stylesheet" href="style.css">
    <script defer src="main.js"></script>
</head>

<body>
    <h1>Counter APP</h1>
    <p class="counter-preview">0</p>
    <div class="buttons" id="allBtns">
        <button class="decrement" id="decrement">decrement</button>
        <button class="reset" id="reset">reset</button>
        <button class="increment" id="increment">increment</button>
    </div>
</body>

</html>
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-size: 16px;
    color: #333;
    width: 400px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    min-height: 100vh;
    background-color: #ABDCF0;
}

h1 {
    text-transform: uppercase;
}

.counter-preview {
    font-size: 8rem;
    font-weight: 700;
    color: #333;
}

button {
    color: #FFF;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    font-size: 18px;
    cursor: pointer;
    margin-top: 20px;
    margin-left: 1rem;
}

.decrement {
    background-color: #4CAF50;
}

.reset {
    background-color: #F44336;
}

.increment {
    background-color: #2196F3;
}
const display = document.querySelector(".counter-preview");
const allBtns = document.querySelector("#allBtns");

allBtns.addEventListener("click", counter);

let value = 0;
function counter(e) {
  const btn = e.target.id;
  if (btn === "increment") {
    value += 1;
  } else if (btn === "decrement") {
    value -= 1;
  } else {
    value = 0;
  }

  display.textContent = value;
}
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