javascript - 如何使用 html 和 javascript 创建音频播放器

标签 javascript html audio drop-down-menu

我正在尝试使用 html 和 javascript,而不是 jquery 创建一个音频播放器。我有一些专辑需要从专辑中返回歌曲。然后我会选择一首歌,它会播放。到目前为止,这是我的代码。我知道它非常困惑,我只是一个初学者所以请原谅。

<!DOCTYPE html>
<html>
<head>
    <script type="text/javascript" src="music.js"></script>
    <style type="text/css"></style>
</head>    
<body>

    <table width="400" height="400" border="1" style="display: inline-block;">
    <caption>Albums</caption>
<tr>
    <td><p>Please select an album from the list
<select name='Album'>
<option>Birdsong Small Birds</option>
<option>Birdsong Large Birds</option>
<option>Birdsong Medium Birds</option>
<option>Birdsong Finches</option>
<option>Birdsong Tits</option>
</select>
</select>
</td>
</tr>
</table>


<table width="400" height="400" border="1" style="display: inline-block;">
<caption>Songs</caption>
<tr>
    <td>a</td>
</tr>
</table>


<table width="400" height="400" border="1" style="display: inline-block;">
<caption>
Selected Songs
</caption>
<tr>
<td>a</td>
</tr>
</table>
</body>
</html>            

因此,当我在第一个表格中选择一张专辑时,我所选择的歌曲将出现在第二个表格中。然后当我在第二个表中选择一首歌曲时,它将在最后一个表中播放

这是我的最终作品的示例
Example
我有一个 music.js 文件,格式如下:

var albums= [ { "title":"Birdsong Small Birds", "artist":"BBC", "artwork":"Wren", "tracks":[ {"title":"Dunnock","mp3":"Birdsong-Dunnock.mp3", "lyrics":"The Dunnock or hedge sparrow has a fast warbling song often delivered from the top of a hedge or bush"},

这是一小块,因为它包含每首歌曲的所有专辑文件夹。

最佳答案

我更改了 codepin样本。您可以在此 pin 中查看工作示例link to codepin.io

我更改了专辑和歌曲自动呈现的 HTML 代码。

已添加 <audio>标签来播放我们的 mp3。已删除 <select> option s 按代码填充。

这是代码

已更新

var albums = [{
    "title": "Birdsong Small Birds",
    "artist": "BBC",
    "artwork": "Wren",
    "tracks": [{
      "title": "Dunnock",
      "mp3": "Birdsong-Dunnock.mp3",
      "lyrics": "The Dunnock or hedge sparrow has a fast warbling song often delivered from the top of a hedge or bush"
    }, {
      "title": "Another Dunnock",
      "mp3": "http://www.noiseaddicts.com/samples_1w72b820/272.mp3",
      "lyrics": "The Dunnock or hedge sparrow has a fast warbling song often delivered from the top of a hedge or bush"
    }, {
      "title": "Third Dunnock",
      "mp3": "Third-Dunnock.mp3",
      "lyrics": "The Dunnock or hedge sparrow has a fast warbling song often delivered from the top of a hedge or bush"
    }]
  },
  {
    "title": "Second Birdsong Birds",
    "artist": "BBC",
    "artwork": "Wren",
    "tracks": [{
      "title": "Dunnock in Second",
      "mp3": "Birdsong-Dunnock.mp3",
      "lyrics": "The Dunnock or hedge sparrow has a fast warbling song often delivered from the top of a hedge or bush"
    }, {
      "title": "Another Dunnock  in Second",
      "mp3": "http://www.noiseaddicts.com/samples_1w72b820/272.mp3",
      "lyrics": "The Dunnock or hedge sparrow has a fast warbling song often delivered from the top of a hedge or bush"
    }, {
      "title": "Third Dunnock  in Second",
      "mp3": "Third-Dunnock.mp3",
      "lyrics": "The Dunnock or hedge sparrow has a fast warbling song often delivered from the top of a hedge or bush"
    }]
  }
];

//add onchange event
var albumElement = document.getElementById('album-select');
albumElement.addEventListener('change', function() {
  // populate songs for selected album
  populateSongs(albumElement.value)
});

// fill Albums from database (albums JSON obj)
for (var i = 0; albums.length; i++) {
  var option = document.createElement("option");
  option.text = albums[i].title;
  albumElement.add(option)
}

function populateSongs(album) {
  var songsTable = document.getElementById('songs-table');

  //delete old songs
  while (songsTable.rows.length > 0) {
    songsTable.deleteRow(0);
  }


  //populate songs in table
  // loop through albums
  for (var i = 0; albums.length; i++) {

    //check selected album
    if (albums[i].title == album) {

      //found album: loop through tracks 
      for (var track = 0; albums[i].tracks.length; track++) {
        //add new <td> and <td>
        var row = songsTable.insertRow(track);
        var cell = row.insertCell(0);

        cell.innerHTML = albums[i].tracks[track].title;

        // add attribute to <td> for mp3 file.
        // we need mp3, title and album onClick
        // creates something like: 
        //         <td title="Song title" album="Album title" file="file.mp3"
        //            Song title
        //         </td>

        cell.setAttribute("title", albums[i].tracks[track].title);
        cell.setAttribute("album", albums[i].title);
        cell.setAttribute("file", albums[i].tracks[track].mp3);


        // add click event
        cell.addEventListener('click', function() {
          // pass clicked <td>
          // this <td> has all data 
          play(this);
        });

      }
    }
  }

  // Add some text to the new cells:


}

function play(element) {
  // retrieve passed data from element attributes
  var songTitle = element.getAttribute('title');
  var albumTitle = element.getAttribute('album');
  var songFile = element.getAttribute('file');

  document.getElementById('audio-player').src = songFile;
  document.getElementById('song-album').innerHTML = albumTitle;
  document.getElementById('song-title').innerHTML = songTitle;

  console.log(song);

}
<html>

<head>

  <style type="text/css"></style>
</head>

<body>

  <table width="400" border="1" style="display: inline-block;">
    <caption>Albums</caption>
    <tr>
      <td>
        <p>Please select an album from the list</p>
        <select id="album-select" name='Album'>
          <option></option>
        </select>
    </tr>
  </table>


  <table id="songs-table" width="400" border="1" style="display: inline-block;">
    <caption>Songs</caption>
    <tr>
      <td></td>
    </tr>
  </table>


  <table width="400" border="1" style="display: inline-block;">
    <caption>
      Selected Songs
    </caption>
    <tr>
      <td>
        <h3 id="song-album">Choosen Album </h3>
        <h4 id="song-title">Song 1</h4>
        <!-- play() adds src attribute -->
        <audio id="audio-player" autoplay controls title="TJs PL">
    Your browser does not support the audio tag.
  </audio>
      </td>
    </tr>
  </table>
</body>

</html>

关于javascript - 如何使用 html 和 javascript 创建音频播放器,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/34124154/

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