get youtube playlist index

问题

I have a playlist embeded in my website using the youtube API (with javascript) and the playlist has 3 songs.

QUESTION: How can I get the index of the song that is currently playing?

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ELABORATING ON WHAT I MEAN:

In the following snippet of code:

function onYouTubePlayerAPIReady() {
    player = new YT.Player('player', {
        height: '390',
        width: '640',
        loadPlaylist:{
            listType:'playlist',
            list:['1asdfasdfs','2asdfasdfs','3asdfasdfs'],
            index:parseInt(0),
            suggestedQuality:'small'
        },
        events: {
            'onReady': onPlayerReady,
            'onStateChange': onPlayerStateChange
        }
    });
}

index:parseInt(0) is telling the youtube api to start playing the song from the first song in the list (1asdfasdfs). I am assuming that this index is contantly shifting, since the users can click any of the 3 songs in the playlist and shift to another song at any time they want. What I would like is to know what method exists to get the current index.

Note: I recognize that I could be a bit hacky and use player.getVideoData()['video_id']; to retrieve the video id, and then loop through the list of three songs ['1asdfasdfs','2asdfasdfs','3asdfasdfs'] and then save the position of that video id in the array, however I believe there is a cleaner method available, possibly a method in the youtube api? I can't seem to find it anywhere though.

回答1:

You probably want to just use player.getPlaylistIndex()

https://developers.google.com/youtube/iframe_api_reference#Retrieving_video_information

来源：https://stackoverflow.com/questions/37724246/get-youtube-playlist-index