Javascript 为什么我的音频自动播放两次？

下面是一个JSFIDLE：

单击“循环播放”按钮时，音频播放两次

以下是html:

以下是jquery代码：

   $("i.icon-play-circle").click(function(){
    var word = "你好"
    var url = 'http://apifree.forvo.com/key/b1b0641fac44c20e42373e0af5d05325/format/json/callback/pronounce/action/standard-pronunciation/word/'+encodeURI(word)+'/language/zh';
    $.ajax({
        url: url,
        jsonpCallback: "pronounce",
        dataType: "jsonp",
        type: "jsonp",
        success: function (json) {
       var mp3 = json.items[0].pathmp3;
       var ogg = json.items[0].pathogg;
       var sound = '<audio autoplay="true"><source src='+mp3+'</source><source src='+ogg+'</source></audio>';
       $('body').append(sound);
   },
    error: function(){
        console.log("error");
}});
});

$（“i.icon-play-circle”）。单击（函数（）{
变量字=”你好"
var url='1〕http://apifree.forvo.com/key/b1b0641fac44c20e42373e0af5d05325/format/json/callback/pronounce/action/standard-pronunciation/word/'+encodeURI（word）+'/language/zh'；
$.ajax({
url:url，
jsonpCallback：“发音”，
数据类型：“jsonp”，
类型：“jsonp”，
成功：函数（json）{
var mp3=json.items[0].pathmp3；
var ogg=json.items[0].pathogg；
var sound='这就是最终对我起作用的原因：

html:



javascript:

       $("i.icon-play-circle").click(function(){
        var word = "你好";
        var url = 'http://apifree.forvo.com/key/b1b0641fac44c20e42373e0af5d05325/format/json/callback/pronounce/action/standard-pronunciation/word/'+encodeURI(word)+'/language/zh';
        $.ajax({
            url: url,
            jsonpCallback: "pronounce",
            dataType: "jsonp",
            type: "jsonp",
            success: function (json) {
           var mp3 = json.items[0].pathmp3;
           var ogg = json.items[0].pathogg;
           var sound = '<audio autoplay="false"><source src='+mp3+' type="audio/mpeg"</source><source src='+ogg+' type="audio/ogg"</source></audio>';
                $('audio:first-child').attr('src',mp3);
                $('audio:last-child').attr('src',ogg);
                $('audio')[0].play();
       },
        error: function(){
            console.log("error");
    }});
    });



//above api key is a free throw away.

$（“i.icon-play-circle”）。单击（函数（）{
变量字=”你好";
var url='1〕http://apifree.forvo.com/key/b1b0641fac44c20e42373e0af5d05325/format/json/callback/pronounce/action/standard-pronunciation/word/'+encodeURI（word）+'/language/zh'；
$.ajax({
url:url，
jsonpCallback：“发音”，
数据类型：“jsonp”，
类型：“jsonp”，
成功：函数（json）{
var mp3=json.items[0].pathmp3；
var ogg=json.items[0].pathogg；
瓦尔桑德酒店
       $("i.icon-play-circle").click(function(){
        var word = "你好";
        var url = 'http://apifree.forvo.com/key/b1b0641fac44c20e42373e0af5d05325/format/json/callback/pronounce/action/standard-pronunciation/word/'+encodeURI(word)+'/language/zh';
        $.ajax({
            url: url,
            jsonpCallback: "pronounce",
            dataType: "jsonp",
            type: "jsonp",
            success: function (json) {
           var mp3 = json.items[0].pathmp3;
           var ogg = json.items[0].pathogg;
           var sound = '<audio autoplay="false"><source src='+mp3+' type="audio/mpeg"</source><source src='+ogg+' type="audio/ogg"</source></audio>';
                $('audio:first-child').attr('src',mp3);
                $('audio:last-child').attr('src',ogg);
                $('audio')[0].play();
       },
        error: function(){
            console.log("error");
    }});
    });



//above api key is a free throw away.