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JavaScript Drum Kit 指南(纯 JS 模拟敲鼓效果)

2024-05-06 15:13:58
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核心代码:

<script> function removeTransition(event) {  if (event.propertyName !== 'transform') return; // 过滤其中一种事件  event.target.classList.remove('playing'); // 移除高亮的样式 } function playSound(event) {  const audio = document.querySelector(`audio[data-key="${event.keyCode}"]`); // 根据触发按键的键码,获取对应音频  const key = document.querySelector(`div[data-key="${event.keyCode}"]`); // 获取页面对应按钮 DIV 元素  if (!audio) return; // 处理无效的按键事件  key.classList.add('playing'); // 改变样式  audio.currentTime = 0; // 每次播放之后都使音频播放进度归零  audio.play(); // 播放相应音效 } const keys = Array.from(document.querySelectorAll('.key')); // 获取页面所有按钮元素 keys.forEach(key => key.addEventListener('transitionend', removeTransition)); // 添加 transition 事件监听 window.addEventListener('keydown', playSound);</script>

中文版本完整代码:

<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>JS Drum Kit</title> <link rel="stylesheet" href="style.css" rel="external nofollow" rel="external nofollow" ></head><body> <div class="keys">  <div data-key="65" class="key">   <kbd>A</kbd>   <span class="sound">clap</span>  </div>  <div data-key="83" class="key">   <kbd>S</kbd>   <span class="sound">hihat</span>  </div>  <div data-key="68" class="key">   <kbd>D</kbd>   <span class="sound">kick</span>  </div>  <div data-key="70" class="key">   <kbd>F</kbd>   <span class="sound">openhat</span>  </div>  <div data-key="71" class="key">   <kbd>G</kbd>   <span class="sound">boom</span>  </div>  <div data-key="72" class="key">   <kbd>H</kbd>   <span class="sound">ride</span>  </div>  <div data-key="74" class="key">   <kbd>J</kbd>   <span class="sound">snare</span>  </div>  <div data-key="75" class="key">   <kbd>K</kbd>   <span class="sound">tom</span>  </div>  <div data-key="76" class="key">   <kbd>L</kbd>   <span class="sound">tink</span>  </div> </div> <audio data-key="65" src="sounds/clap.wav"></audio> <audio data-key="83" src="sounds/hihat.wav"></audio> <audio data-key="68" src="sounds/kick.wav"></audio> <audio data-key="70" src="sounds/openhat.wav"></audio> <audio data-key="71" src="sounds/boom.wav"></audio> <audio data-key="72" src="sounds/ride.wav"></audio> <audio data-key="74" src="sounds/snare.wav"></audio> <audio data-key="75" src="sounds/tom.wav"></audio> <audio data-key="76" src="sounds/tink.wav"></audio><script> function removeTransition(event) {  if (event.propertyName !== 'transform') return; // 过滤其中一种事件  event.target.classList.remove('playing'); // 移除高亮的样式 } function playSound(event) {  const audio = document.querySelector(`audio[data-key="${event.keyCode}"]`); // 根据触发按键的键码,获取对应音频  const key = document.querySelector(`div[data-key="${event.keyCode}"]`); // 获取页面对应按钮 DIV 元素  if (!audio) return; // 处理无效的按键事件  key.classList.add('playing'); // 改变样式  audio.currentTime = 0; // 每次播放之后都使音频播放进度归零  audio.play(); // 播放相应音效 } const keys = Array.from(document.querySelectorAll('.key')); // 获取页面所有按钮元素 keys.forEach(key => key.addEventListener('transitionend', removeTransition)); // 添加 transition 事件监听 window.addEventListener('keydown', playSound);</script></body></html>            
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