回答

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>BFW NEW PAGE</title>

</head>
<body>
    <span id="bf"BfwOnclick="play();">播放/暂停</span>
    <span id="bf"BfwOnclick="resume();">重新播放</span>
    <audio src="//repo.bfw.wiki/bfwrepo/sound/5c89fd22dea6948307.mp3"></audio>
    <script>
        var videoEl = document.querySelector('audio');
        function play() {
            if (videoEl !== null) {
                //检测播放是否已暂停.audio.paused 在播放器播放时返回false.

                if (videoEl.paused) {
                    videoEl.play(); //audio.play();// 这个就是播放
                } else {
                    videoEl.pause(); // 这个就是暂停
                }
            }

        }
        function resume() {
            if (videoEl !== null) {
                videoEl.currentTime = 0;
                videoEl.play();

            }
        }

        videoEl.addEventListener('play', function () {})
        //播放进度监听 
        videoEl.addEventListener('timeupdate', function () {
            var vTime = videoEl.currentTime;
            var total_vtime = videoEl.duration;
            //4秒后暂停播放
            if (vTime >= 4) {
                videoEl.currentTime = 0;
                videoEl.pause();

            }
        })
    </script>

</body>
</html>