打算用audio自己做个播放器，需要用audio标签的currentTime属性，来控制播放进度。但是这个属性在FireFox及ie11下都有效，但就是在chrome下面，设置了无效，不知道各位大神知道原因吗？
代码如下：

.directive('mediaPlayer',function(mediaPlayerConfig,$interval,$timeout){
                return {
                    restrict:'EA',
                    templateUrl:'template/player.html',
                    scope:{
                        playList:'='
                    },
                    controller:function($scope){
                        var player=this;
                        var conf=mediaPlayerConfig;
                        var playList=$scope.playList||[];
                        var $audio,isPlaying=false;
                        var timer=null;
                        var index=0;
                        var audioLike={
                            currentTime:0,
                            duration:0,
                            volume:0
                        };


                        player.initialize=function(){
                            $scope.audioLike=audioLike;
                            audioLike.volume=$audio.volume;
                            player.play(index)
                        };

                        player.setAudio=function(element){
                            $audio=element[0];
                            player._bindEvents(element);
                        };

                        player.play=function(file){
                            var idx;

                            if(angular.isNumber(file)){
                                idx=file;
                                file=playList[idx];
                            }

                            if(file){
                                $audio.src=file[conf.fileUrlProp];
                                $scope.currentFile=file;
                            }


                            $interval.cancel(timer);

                            timer=$interval(function(){
                                audioLike.currentTime=$audio.currentTime.toFixed(0);
                            },1000);

                            $audio.play();

                            isPlaying=true;
                        };

                        player.pause=function(){
                            $audio.pause();

                            isPlaying=false;

                            $interval.cancel(timer);
                        };

                        //播放上一首，如果已经是第一首，则跳到最后一首
                        player.prev=function(){
                            index=index===0?
                                    playList.length-1:
                                    index-1;

                            player.play(index);
                        };


                        //播放下一首，如果已经是最后一首，则跳到第一首
                        player.next=function(){
                            index=index===(playList.length-1)?
                            0:
                            index+1;

                            player.play(index);
                        };

                        player.skipTo=function(sec){
                            $audio.currentTime=sec;

                        };

                        player.togglePlay=function(){
                            var method=isPlaying?'pause':'play';
                            player[method]();
                        };

                        player.isPlay=function(){
                            return isPlaying;
                        };

                        player.random=function(){
                            var min=0;
                            var max=playList.length-1;
                            var range=max-min;
                            var rand=Math.random();

                            rand=min + Math.round(rand * range);
                            player.play(rand);
                        };

                        player._bindEvents=function(element){
                            element
                                    .on('canplay',function(e){

                                        $scope.$apply(function(){
                                            audioLike.duration=$audio.duration.toFixed(0);
                                        });

                                    })
                                    .on('ended',function(){
                                        //如果允许循环
                                        if(conf.loop){

                                        }

                                        if(conf.random){
                                            player.random();
                                            return;
                                        }
                                        $scope.$apply(function(){
                                            player.next();
                                        });
                                    })
                                    .on('progress',function(e){
                                        console.log(e);
                                    });
                        };

                        player.volume=function(volume){
                            if(angular.isNumber(volume)){
                                $audio.volume=volume;
                            }else{
                                return $audio.volume;
                            }
                        };
                    },
                    link:function(scope,element,attr,mediaPlayerCtrl){
                        mediaPlayerCtrl.initialize();
                        scope.skipTo=function(){
                            mediaPlayerCtrl.skipTo(250);
                        };
                    }
                }
            })