Question

好的，所以当你按一个键音频开始，现在我想点击一个键/按钮和音频开始，我不知道如果有人点击是如何获取数据，所以我可以播放它后。

所以现在我必须看到点击了哪个元素然后获取该元素的数据并将其与音频文件匹配...然后播放

 <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>
      window.addEventListener('keydown' , playSound);

      function playSound(e) {
        const audio = document.querySelector(`audio[data-key="${e.keyCode}"]`);
        const key = document.querySelector(`div[data-key="${e.keyCode}"]`);
        if (!audio) return;

        key.classList.add('playing');
        audio.currentTime = 0;
        audio.play();
      }

      const keys = Array.from(document.querySelectorAll('.key'));

      keys.forEach(key => key.addEventListener('transitionend', removeTransition));

      function removeTransition(e) {
        if (e.propertyName !== 'transform') return;
        e.target.classList.remove('playing');
      } 
    </script>

Answer 1

为每个键添加了单击侦听器，并修改了playSound函数以直接接受keyCode。

＆＃13;

window.addEventListener('keydown', e => {
  playSound(e.keyCode);
});

function playSound(keyCode) {
  const audio = document.querySelector(`audio[data-key="${keyCode}"]`);
  const key = document.querySelector(`div[data-key="${keyCode}"]`);
  if (!audio) return;

  key.classList.add('playing');
  audio.currentTime = 0;
  audio.play();
}

const keys = Array.from(document.querySelectorAll('.key'));

keys.forEach(key => key.addEventListener('transitionend', removeTransition));
keys.forEach(key => key.addEventListener('click', (e) => {
  playSound(e.srcElement.parentElement.getAttribute('data-key'))
}));

function removeTransition(e) {
  if (e.propertyName !== 'transform') return;
  e.target.classList.remove('playing');
}

＆＃13;

<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>

＆＃13;

看看javascript中点击了什么元素？

1 个答案: