实战教程：如何用JavaScript构建一个功能强大的音乐播放器，兼容本地与在线资源

项目地址：Music Player App

作者：Reza Mehdikhanlou

视频地址：youtube

我将向您展示如何使用 javascript 编写音乐播放器。我们创建一个项目，您可以使用 javascript 从本地文件夹或任何 url 播放音频文件。

项目目录

assets
- 1.jpg
- 1.mp3
- 2.jpg
- 2.mp3
- 3.jpg
- 3.mp3
index.html
index.js
style.css

代码

index.html

<!DOCTYPE html>
<html lang="en"><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"><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css"><link rel="stylesheet" href="style.css"><title>Music Player App</title>
</head><body><div class="background"><img src="" id="bg-img"></div><div class="container"><div class="player-img"><img src="" class="active" id="cover"></div><h2 id="music-title"></h2><h3 id="music-artist"></h3><div class="player-progress" id="player-progress"><div class="progress" id="progress"></div><div class="music-duration"><span id="current-time">0:00</span><span id="duration">0:00</span></div></div><div class="player-controls"><i class="fa-solid fa-backward" title="Previous" id="prev"></i><i class="fa-solid fa-play play-button" title="Play" id="play"></i><i class="fa-solid fa-forward" title="Next" id="next"></i></div></div><script src="index.js"></script>
</body></html>

index.js

const image = document.getElementById('cover'),title = document.getElementById('music-title'),artist = document.getElementById('music-artist'),currentTimeEl = document.getElementById('current-time'),durationEl = document.getElementById('duration'),progress = document.getElementById('progress'),playerProgress = document.getElementById('player-progress'),prevBtn = document.getElementById('prev'),nextBtn = document.getElementById('next'),playBtn = document.getElementById('play'),background = document.getElementById('bg-img');const music = new Audio();const songs = [{path: 'assets/1.mp3',// path:'https://childish.oss-cn-hangzhou.aliyuncs.com/songs/Peel%20Back%20the%20Heart.mp3'displayName: 'The Charmer\'s Call',cover: 'assets/1.jpg',artist: 'Hanu Dixit',},{path: 'assets/2.mp3',displayName: 'You Will Never See Me Coming',cover: 'assets/2.jpg',artist: 'NEFFEX',},{path: 'assets/3.mp3',displayName: 'Intellect',cover: 'assets/3.jpg',artist: 'Yung Logos',}
];let musicIndex = 0;
let isPlaying = false;function togglePlay() {if (isPlaying) {pauseMusic();} else {playMusic();}
}function playMusic() {isPlaying = true;// Change play button iconplayBtn.classList.replace('fa-play', 'fa-pause');// Set button hover titleplayBtn.setAttribute('title', 'Pause');music.play();
}function pauseMusic() {isPlaying = false;// Change pause button iconplayBtn.classList.replace('fa-pause', 'fa-play');// Set button hover titleplayBtn.setAttribute('title', 'Play');music.pause();
}function loadMusic(song) {music.src = song.path;title.textContent = song.displayName;artist.textContent = song.artist;image.src = song.cover;background.src = song.cover;
}function changeMusic(direction) {musicIndex = (musicIndex + direction + songs.length) % songs.length;loadMusic(songs[musicIndex]);playMusic();
}function updateProgressBar() {const { duration, currentTime } = music;const progressPercent = (currentTime / duration) * 100;progress.style.width = `${progressPercent}%`;const formatTime = (time) => String(Math.floor(time)).padStart(2, '0');durationEl.textContent = `${formatTime(duration / 60)}:${formatTime(duration % 60)}`;currentTimeEl.textContent = `${formatTime(currentTime / 60)}:${formatTime(currentTime % 60)}`;
}function setProgressBar(e) {const width = playerProgress.clientWidth;const clickX = e.offsetX;music.currentTime = (clickX / width) * music.duration;
}playBtn.addEventListener('click', togglePlay);
prevBtn.addEventListener('click', () => changeMusic(-1));
nextBtn.addEventListener('click', () => changeMusic(1));
music.addEventListener('ended', () => changeMusic(1));
music.addEventListener('timeupdate', updateProgressBar);
playerProgress.addEventListener('click', setProgressBar);loadMusic(songs[musicIndex]);

style.css

@import url('https://fonts.googleapis.com/css2?family=Ubuntu:wght@300;400;500;700&display=swap');html{box-sizing: border-box;
}body{margin: 0;font-family: 'Ubuntu', sans-serif;font-size: 12px;min-height: 100vh;display: flex;align-items: center;justify-content: center;
}.background{position: fixed;width: 200%;height: 200%;top: -50%;left: -50%;z-index: -1;
}.background img{position: absolute;margin: auto;top: 0;left: 0;bottom: 0;right: 0;min-width: 50%;min-height: 50%;filter: blur(15px);-webkit-filter: blur(50px);transform: scale(1.1);
}.container{background-color: #e7e7e7;height: 500px;width: 400px;border-radius: 20px;box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);transition: all 0.5s ease;
}.container:hover{box-shadow: 0 15px 30px rgba(0, 0, 0, 0.6);
}.player-img{width: 300px;height: 300px;position: relative;top: -50px;left: 50px;
}.player-img img{object-fit: cover;border-radius: 20px;height: 0;width: 0;opacity: 0;box-shadow: 0 5px 30px 5px rgba(0, 0, 0, 0.5);
}.player-img:hover img{box-shadow: 0 5px 30px 5px rgba(0, 0, 0, 0.8);
}.player-img img.active{width: 100%;height: 100%;transition: all 0.5s;opacity: 1;
}h2{font-size: 25px;text-align: center;font-weight: 500;margin: 10px 0 0;
}h3{font-size: 18px;text-align: center;font-weight: 500;margin: 10px 0 0;
}.player-progress{background-color: #fff;border-radius: 5px;cursor: pointer;margin: 40px 20px 35px;height: 6px;width: 90%;
}.progress{background-color: #212121;border-radius: 5px;height: 100%;width: 0%;transition: width 0.1s linear;
}.music-duration{position: relative;top: -25px;display: flex;justify-content: space-between;
}.player-controls{position: relative;top: -15px;left: 120px;width: 200px;
}.fa-solid{font-size: 30px;color: #666;margin-right: 30px;cursor: pointer;user-select: none;transition: all 0.3s ease;
}.fa-solid:hover{filter: brightness(40%);
}.play-button{font-size: 44px;position: relative;top: 3px;
}