在您的代码中playerId 是字符串。所以playerId.tracks 无法工作。

因此，您可以使用wp_localize_script （WP 3.3+）：

$playlists = array(
  \'playlist150\' => array( \'tracks\'=> array(\'track1\', \'track2\') ),
  \'playlist257\' => array( \'tracks\'=> array(\'track3\', \'track4\') )
);
wp_localize_script( \'some_handle\', \'allPlaylists\', $playlists );

然后在js中，使用括号符号检索正确的数组：

jQuery(document).ready(function($) {
  $(\'.playlist-item\').each(function() {
      var tracks = allPlaylists[playerId].tracks // this is an array     
  });
});

前一条是一般信息。据我所知，你想用jPlayerPlaylist object.

我在文档中读到的是，它需要一个实例化，如：

// This is pseudo-code.
var myPlaylist = new jPlayerPlaylist({cssSelector}, [playlist], {options});

其中，playlist是一组对象，每个对象类似于：

{
  title:"The Title",
  artist:"The Artist",
  free: true,
  mp3:"http://www.example.com/songs/track1.mp3",
}

css选择器是一个具有两个属性的对象，必须与必须显示播放器的div相关。

现在，如果您的html容器是：

<div id="playlist150" class="playlist-item"></div>
<div id="playlist257" class="playlist-item"></div>

在插件或函数中。php您必须创建正确的数组，将脚本排队，并以类似以下方式传递数据：

add_action(\'wp_enqueue_scripts\', \'mytracklists\');

function mytracklists() { 
  $playlists = array(
    \'playlist150\' => array(
      \'tracks\' => array(
        array(
          \'title\' => "Track 1",
          \'artist\' => "One Artist",
          \'free\' => true,
          \'mp3\' => "http://www.example.com/songs/track1.mp3",
        ),
        array(
          \'title\' => "Track 2",
          \'artist\' => "One Artist",
          \'free\' => true,
          \'mp3\' => "http://www.example.com/songs/track2.mp3",
        )
      )
    ),
    \'playlist257\' => array(
      \'tracks\' => array(
        array(
          \'title\' => "Track 3",
          \'artist\' => "Second Artist",
          \'free\' => true,
          \'mp3\' => "http://www.example.com/songs/track3.mp3",
        ),
        array(
          \'title\' => "Track 4",
          \'artist\' => "Second Artist",
          \'free\' => true,
          \'mp3\' => "http://www.example.com/songs/track4.mp3",
        )
      )
    ),
  );
  wp_register_script(\'jplayer\', get_template_directori_uri() . \'/js/jplayer/jquery.jplayer.min.js\', array(\'jquery\'));
  wp_register_script(\'jplayerplaylist\', get_template_directori_uri() . \'/js/jplayer/add-on/jplayer.playlist.min.js\', array(\'jplayer\'));
  wp_enqueue_script(\'myplaylists\', get_template_directori_uri() . \'/js//myplaylists.js\', array(\'jplayerplaylist\'));
  wp_localize_script( \'myplaylists\', \'allPlaylists\', $playlists );
}

你看我排队了jplayer, jplayerplaylist 和一个名为myplaylists 应该包含以下内容：

jQuery(document).ready(function($) {
  // options, valid for all players 
  var my_options = {
    playlistOptions: {
      autoPlay: false,
      loopOnPrevious: false,
      shuffleOnLoop: true,
      enableRemoveControls: false,
      displayTime: \'slow\',
      addTime: \'fast\',
      removeTime: \'fast\',
      shuffleTime: \'slow\'
    },
    supplied: "mp3"
  }
  // settings for each player
  $(\'.playlist-item\').each(function() { 
    var cssSelector = {
      jPlayer: \'#player_\' + $(this).attr(\'id\'),
      cssSelectorAncestor: \'#\' + $(this).attr(\'id\')
    }
    var playerId = $(this).attr(\'id\');
    // create and populate the playlist array
    // taking data from objet passed via wp_localize_script
    var playlist = new Array();
    $.each( allPlaylists[playerId].tracks, function(i, value) {
      playlist.push(value);
    })
    // instanciate jPlayerPlaylist
    var myPlayer = new jPlayerPlaylist( cssSelector, playlist, my_options );
  });
});

因此，迭代div脚本创建cssSelector 对象并创建包含轨迹的对象数组。之后，使用这些变量（和options对象）实例化jPlayerPlaylist 对象