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HuXn-WebDevHuXn-WebDev
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Interchangeable Background Color
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‎44. Interchangeable Background Color/app.js‎

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const btns = document.querySelectorAll(".btn");
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btns.forEach((btn) => {
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btn.addEventListener("click", () => {
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number = btn.value;
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changeBackground(number);
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});
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});
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const body = document.body;
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function changeBackground(number) {
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body.className = "";
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switch (number) {
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case "purple":
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body.classList.add("purple");
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break;
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case "blue":
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body.classList.add("blue");
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break;
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case "red":
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body.classList.add("red");
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break;
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case "green":
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body.classList.add("green");
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break;
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case "yellow":
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body.classList.add("yellow");
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break;
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case "teal":
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body.classList.add("teal");
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break;
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default:
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break;
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}
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}

‎44. Interchangeable Background Color/index.html‎

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<html lang="en">
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<head>
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<meta charset="UTF-8" />
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<meta http-equiv="X-UA-Compatible" content="IE=edge" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<title>Interchangeable Background Color</title>
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<link rel="stylesheet" href="style.css" />
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</head>
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<body>
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<div class="content-container">
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<nav class="nav">
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<input type="button" value="purple" class="btn purple" />
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<input type="button" value="blue" class="btn blue" />
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<input type="button" value="red" class="btn red" />
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<input type="button" value="green" class="btn green" />
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<input type="button" value="yellow" class="btn yellow" />
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<input type="button" value="teal" class="btn teal" />
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</nav>
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</div>
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<script src="app.js"></script>
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</body>
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</html>

‎44. Interchangeable Background Color/style.css‎

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* {
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margin: 0;
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padding: 0;
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box-sizing: border-box;
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}
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body {
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background: rgb(28, 28, 35);
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}
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.content-container {
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height: 100vh;
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display: flex;
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flex-direction: column;
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justify-content: center;
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align-items: center;
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}
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.btn {
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padding: 10px 20px;
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border: none;
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color: #fff;
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border: 2px solid white;
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width: 120px;
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height: 100px;
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margin: 20px;
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cursor: pointer;
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font-weight: bold;
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text-transform: uppercase;
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}
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.purple {
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background-color: purple;
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}
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.blue {
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background-color: blue;
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}
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.red {
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background-color: red;
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}
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.green {
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background-color: green;
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}
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.yellow {
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background-color: yellow;
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}
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.teal {
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background-color: teal;
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}

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