<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <link rel="stylesheet" href="style.css" />
    <title>Project #6 - Color Switcher</title>
  </head>
  <body>
    <p class="color">
      rgb(255, 255, 255)
    </p>
    <button class="switch">바꿔봐!</button>

    <!-- --------------------------------- -->
    <!-- JS File -->
    <script src="app.js"></script>
  </body>
</html>

* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

body {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  font-family: Arial, Helvetica, sans-serif;
  transition: all 0.3s ease-in-out;
}

.switch {
  background-color: #333;
  color: #fff;
  border: none;
  outline: none;
  padding: 15px 30px;
  font-size: 20px;
  margin-top: 40px;
  cursor: pointer;
}

.color {
  font-size: 50px;
}

const body = document.body;
const switchBtn = document.querySelector(".switch");
const switchPara = document.querySelector(".color");

switchBtn.addEventListener("click", function () {
  let color1 = getRandomNum(); //red
  let color2 = getRandomNum(); //green
  let color3 = getRandomNum(); //blue

  const colorString = `rgb(${color1}, ${color2}, ${color3})`;
  // console.log(colorString);

  body.style.backgroundColor = colorString;
  switchPara.innerText = colorString;
});

function getRandomNum() {
  return Math.floor(Math.random() * 256);
}
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External CSS

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External JavaScript

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