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Javascript - Progress Steps 본문

Javascript

Javascript - Progress Steps

HiroDaegu 2021. 9. 26. 00:25
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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>Progress Steps</title>
  <link rel="stylesheet" href="style.css">
  <script defer src="main.js"></script>
</head>
<body>
  <div class="container">
    <div class="progress-container">
      <div class="progress" id="progress"></div>
      <div class="circle active">1</div>
      <div class="circle">2</div>
      <div class="circle">3</div>
      <div class="circle">4</div>
    </div>
    <button class="btn" id="prev" disabled>prev</button>
    <button class="btn" id="next" >next</button>
  </div>
</body>
</html>
@import url('https://fonts.googleapis.com/css?family=Muli&display=swap');

:root {
  --line-border-fill: #3498db;
  --line-border-empty: #e0e0e0;
}

* {
  box-sizing: border-box;
}

body {
  background-color: #f6f7fb;
  font-family: 'Muli', sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  overflow: hidden;
  margin: 0;
}

.container {
  text-align: center;
}

.progress-container {
  display: flex;
  justify-content: space-between;
  position: relative;
  margin-bottom: 30px;
  max-width: 100%;
  width: 350px;
}

.progress-container::before {
  content: '';
  background-color: var(--line-border-empty);
  position: absolute;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
  height: 4px;
  width: 100%;
  z-index: -1;
}

.progress {
  background-color: var(--line-border-fill);
  position: absolute;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
  height: 4px;
  width: 0%;
  z-index: -1;
  transition: 0.4s ease;
}

.circle {
  background-color: #fff;
  color: #999;
  border-radius: 50%;
  height: 30px;
  width: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 3px solid var(--line-border-empty);
  transition: 0.4s ease;
}

.circle.active {
  border-color: var(--line-border-fill);
}

.btn {
  background-color: var(--line-border-fill);
  color: #fff;
  border: 0;
  border-radius: 6px;
  cursor: pointer;
  font-family: inherit;
  padding: 8px 30px;
  margin: 5px;
  font-size: 14px;
}

.btn:active {
  transform: scale(0.98);
}

.btn:focus {
  outline: 0;
}

.btn:disabled {
  background-color: var(--line-border-empty);
  cursor: not-allowed;
}
const progress = document.getElementById("progress");
const prev = document.getElementById("prev");
const next = document.getElementById("next");
const circles = document.querySelectorAll(".circle");

let currenActive = 1;

next.addEventListener("click", () => {
  currenActive++;
  if(currenActive > circles.length) {
    currenActive = circles.length;
  }
  update();
})

prev.addEventListener("click", () => {
  currenActive--;
  if(currenActive < 1) {
    currenActive = 1;
  }
  update();
})

function update() {
  circles.forEach((circle, index) => {
    if(index < currenActive) {
      circle.classList.add("active");
    } else {
      circle.classList.remove("active");
    }
  })

  const actives = document.querySelectorAll(".active")
  progress.style.width = `${((actives.length - 1) / (circles.length - 1))*100}%`

  if(currenActive === 1) {
    prev.disabled = true;
  } else if(currenActive === circles.length) {
    next.disabled = true;
  } else {
    prev.disabled = false;
    next.disabled = false;
  }
}
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