是否可以只对多个音频进行一个音量控制

Question

我正在开发一个供个人使用的交互式视频网站项目。这里我想同时对多个音频做一个音量控制，我该怎么做？

我试过为一个音频制作一个音量控制并且成功了:

var audio = document.getElementById('bgsound1');
var volumeControl = document.getElementById('vol-control');

var setVolume = function(){
audio.volume = this.value / 100;
};

volumeControl.addEventListener('change',setVolume);
volumeControl.addEventListener('input',setVolume);

这是我的音频标签：

<audio src="asset/sound/M2.mp3" id="bgsound1"></audio>
<audio src="asset/sound/sound2.mp3" id="bgsound2"></audio>
<audio src="asset/sound/sound3.mp3" id="bgsound3"></audio>

Answer 1

当然，您必须遍历每个音频元素。请参阅下面代码中的注释。

let volumeControl = document.getElementById('vol-control');

function setVolume (){

  console.clear()
  console.log(volumeControl.value)
  
  // Get the array of audio element and loop through them to set the new volume value
  Array.from(document.querySelectorAll("audio")).forEach(function(audio){
  
      //  if the input value is "", use zero
      audio.volume = volumeControl.value == "" ? 0 : volumeControl.value / 100;
    })
};

volumeControl.addEventListener('change', setVolume);
volumeControl.addEventListener('input', setVolume);

// On load
setVolume()

<input id="vol-control" type="number" min="0" max="100" value="25">
<br>


<audio src="https://www.soundhelix.com/examples/mp3/SoundHelix-Song-1.mp3" id="bgsound1" controls></audio>
<audio src="https://www.soundhelix.com/examples/mp3/SoundHelix-Song-8.mp3" id="bgsound2" controls></audio>
<audio src="https://www.soundhelix.com/examples/mp3/SoundHelix-Song-16.mp3" id="bgsound3" controls></audio>

是否可以只对多个音频进行一个音量控制

is it possible to make only one volume control for multiple audio

html

javascript

audio

volume