结束后自动切换到下一首歌 [英] auto change to the next song after ended

问题描述

我想在结束直到最后一首歌后自动播放下一首歌。目前这是我的代码。

I want to auto to play next song after ended until last song. currently this my code.

HTML

<audio id="audio" src="Music/Inuyasha - Dearest ~Instrumental~.mp3" controls></audio>
<div class="btn" name="Music/Inuyasha - Dearest ~Instrumental~.mp3"></div><br>
<div class="btn" name="Music/Fear and Loathing in Las Vegas -  Just Awake.mp3"></div><br>
<div class="btn" name="Music/Fear and Loathing in Las Vegas - How Old You Are Never Forget Your Dream.mp3"></div><br>
<div class="btn" name="Music/Fear and Loathing in Las Vegas - Short but Seems Long time of our Life Lyrics.mp3"></div><br>
<div class="btn" name="Music/My First Story - Calling You.mp3"></div><br>
<div class="btn" name="Music/My First Story - Bullet Radio.mp3"></div>

JavaScript

$（）是document.getElementById（）。我让它拥有。

$() is document.getElementById(). i make it owns.

  // my codes is not JQuery but Pure JavaScript.

var btn = document.getElementsByClassName('btn');

for(i=0; i < btn.length; i++){

    btn[i].addEventListener('click', function(v){
        $('audio').src = v.target.getAttribute('name');
        $('audio').play();
    }, false);

    //Above codes is not problem but bottom for auto to change next song after ended

    btn[i].index = i;

    $('audio').addEventListener('ended', function(){
        $('audio').src = btn[this.index+1].getAttribute('name');
        $('audio').play();
    }, false);
}

//我的结束作品是当歌曲结束时它将获得当前索引阵列歌曲然后+1当前索引数组并播放它直到最后一首歌曲。但它不起作用。

// my ended works is when song ended it will get current index array song then +1 the current index array and play it until last song. but it doesn't work.

推荐答案

var btn = document.getElementsByClassName('btn'),
    currentBtn = -1;

for(i=0; i < btn.length; i++){
    btn[i].addEventListener('click', function(){
        // get current btn index
        currentBtn = Array.prototype.slice.call( btn ).indexOf(this);

        $('audio').btn[currentBtn].getAttribute('name');
        $('audio').play();
    }, false);
}

$('audio').addEventListener('ended', function() {
    // get next button index. if it was last one - repeat from first btn
    currentBtn++;
    if (currentBtn >= btn.length) {
      currentBtn = 0;
    }
    $('audio').src = btn[currentBtn].getAttribute('name');
    $('audio').play();
}, false);

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