---在线演示

$(function () {        songmsg.setMsg(0);        songmsg.loadRotationChart();        $("#volume").change(function () {            if($(this).val() == 0){                songmsg.songMuted(true);            }else{                songmsg.songMuted(false);            }            songmsg.setVolume($(this).val());            volume = $(this).val();        });        $("#cover").click(function (){            if($(this).hasClass('btn_pause')){                songmsg.songPause();            }else{                var data_num = song.getAttribute("data-num");                if(data_num == 0 && song.currentTime == 0){                    song.src = song_list[data_num].song_url;                    song.volume = 0.5;                }                songmsg.songPlay();            }        });        $("#play_right").click(function () {            songmsg.nextSong();        });        $("#play_left").click(function () {            songmsg.prveSong();        });        $(".vlue-icon").click(function () {            var isMuted,ele = $(this).children("i");            if(ele.hasClass("v_o")){                isMuted = true;                $("#volume").val(0);            }else {                isMuted = false;                $("#volume").val(volume);            }            songmsg.songMuted(isMuted);        });        $("#cmn-toggle-1").click(function () {            if($(this).is(':checked')){                open_lrc = true;                $(".cover_container").fadeIn();            }else{                open_lrc = false;                $(".cover_container").fadeOut();            }        });        $("#progress  ").mousedown(function (e) {            if(isNaN(song.duration)){                return;            }            var  x = e.clientX-50;            var total_width = $(this).width();            var bar = (x/total_width)*100;            bar = bar.toFixed(2);            $("#play_on").css({"transform":"translateX("+bar+"%)"});            time = parseInt(song.duration * bar/100);            song.currentTime = time;        });    });