处理音频总时长

function duration(){
    let musicDom = document.getElementsByTagName('audio')[0];  // 获取AudioDom节点
    musicDom.load();//因为source标签不能直接更改路径，所以整个audio标签必须重新加载一次
    musicDom.oncanplay = function () {
        console.log("音乐时长",musicDom.duration);//音乐总时长
        //处理时长
        var time = musicDom.duration;
        //分钟
        var minute = time / 60;
        var minutes = parseInt(minute);
        if (minutes < 10) {
            minutes = "0" + minutes;
        }
        //秒
        var second = time % 60;
        var seconds = Math.round(second);
        if (seconds < 10) {
            seconds = "0" + seconds;
        }
        $('.setTime').html(minutes+":"+seconds);
        console.log('处理音乐时长',minutes+"："+seconds)
    }
}