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前端 用HTML，CSS, JS 写一个简易的音乐播放器
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<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><title>Music Player</title><style>/* 样式可自行修改 */.container {width: 600px;margin: 0 auto;}h2 {text-align: center;}.controls {display: flex;justify-content: space-between;align-items: center;margin-bottom: 20px;}.progress {width: 400px;height: 10px;background-color: #ccc;}.progress-bar {height: 10px;background-color: #6cb0ff;}.info {display: flex;justify-content: center;align-items: center;margin-bottom: 20px;}.song-info {margin-left: 20px;display: flex;flex-direction: column;}.song-info span {margin-bottom: 5px;}.song-list {list-style: none;padding: 0;}.song-list li {margin-bottom: 5px;cursor: pointer;}.song-list li.active {color: #6cb0ff;}.play-mode {display: flex;align-items: center;}.play-mode span {margin-right: 5px;}</style>
</head>
<body><div class="container"><h2>Music Player</h2><div class="controls"><button id="prev">上一首</button><button id="play">播放</button><button id="next">下一首</button><div class="progress"><div class="progress-bar"></div></div><input type="range" id="volume" min="0" max="1" step="0.1" value="0.5"></div><div class="info"><img src="" alt="" id="cover"><div class="song-info"><span id="song-name">歌曲名称</span><span id="artist">歌手</span></div></div><ul class="song-list"><li data-src="./music/song1.mp3">歌曲1</li><li data-src="./music/song2.mp3">歌曲2</li><li data-src="./music/song3.mp3">歌曲3</li></ul><div class="play-mode"><span>播放模式：</span><button id="loop">循环</button><button id="random">随机</button><button id="single">单曲</button></div></div><script>const audio = new Audio(); // 创建音乐播放器对象const songList = document.querySelectorAll('.song-list li');const prevBtn = document.querySelector('#prev');const playBtn = document.querySelector('#play');const nextBtn = document.querySelector('#next');const volumeSlider = document.querySelector('#volume');const progressBar = document.querySelector('.progress-bar');const coverImg = document.querySelector('#cover');const songName = document.querySelector('#song-name');const artistName = document.querySelector('#artist');const loopBtn = document.querySelector('#loop');const randomBtn = document.querySelector('#random');const singleBtn = document.querySelector('#single');let currentIndex = 0;let isPlaying = false;let playMode = 'loop'; // 默认播放模式为循环function playSong(index) {const song = songList[index];audio.src = song.dataset.src;audio.play();isPlaying = true;playBtn.textContent = '暂停';coverImg.src = `./images/cover${index+1}.jpg`;songName.textContent = song.textContent;artistName.textContent = '歌手名称';songList.forEach((item) => {item.classList.remove('active');});song.classList.add('active');}function getNextIndex() {let nextIndex;switch(playMode) {case 'loop':nextIndex = currentIndex + 1;if (nextIndex >= songList.length) {nextIndex = 0;}break;case 'random':nextIndex = Math.floor(Math.random() * songList.length);break;case 'single':nextIndex = currentIndex;break;}return nextIndex;}function updateProgress() {const progress = audio.currentTime / audio.duration * 100;progressBar.style.width = `${progress}%`;}function init() {playSong(currentIndex);}init();prevBtn.addEventListener('click', () => {currentIndex--;if (currentIndex < 0) {currentIndex = songList.length - 1;}playSong(currentIndex);});nextBtn.addEventListener('click', () => {currentIndex = getNextIndex();playSong(currentIndex);});playBtn.addEventListener('click', () => {if (isPlaying) {audio.pause();isPlaying = false;playBtn.textContent = '播放';} else {audio.play();isPlaying = true;playBtn.textContent = '暂停';}});volumeSlider.addEventListener('input', () => {audio.volume = volumeSlider.value;});audio.addEventListener('timeupdate', updateProgress);progressBar.addEventListener('click', (e) => {const width = progressBar.clientWidth;const clickX = e.offsetX;const duration = audio.duration;audio.currentTime = clickX / width * duration;});songList.forEach((song, index) => {song.addEventListener('click', () => {currentIndex = index;playSong(currentIndex);});});loopBtn.addEventListener('click', () => {playMode = 'loop';});randomBtn.addEventListener('click', () => {playMode = 'random';});singleBtn.addEventListener('click', () => {playMode = 'single';});audio.addEventListener('ended', () => {currentIndex = getNextIndex();playSong(currentIndex);});</script>
</body>
</html>这个实现了基本的播放/暂停、歌曲切换、音量控制、进度条控制和显示歌曲信息等功能，同时还支持播放模式切换和歌曲列表操作。不过这只是一个简单的示例，实际上还有很多功能需要进一步完善和优化，例如：
- 支持歌词显示和同步
- 支持播放列表编辑和保存
- 支持拖拽上传歌曲
- 支持在线搜索歌曲
- 支持分享和评论等社交功能
这些功能的实现需要涉及到不同的技术和工具，如 AJAX、WebSocket、React、Node.js 等。如果你想要深入学习和掌握 Web 开发技术，可以选择相应的学习路径和教程进行学习。
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