涉及到課程的視訊：有多節課選擇

廢話不多說直接上程式碼：

 var videoPlayer = $("#my-video").get(0);
 if (typeof (videoPlayer) != "undefined") {
    var myPlayer = videojs('my-video');
        myPlayer.dispose();
    }

先判斷之前有沒有例項化過videoJs，例項化過的話就需要dispose()這個方法銷燬例項化的物件；

之後在動態新增：

            var id = "my-video";
            $("#my-wrap").html("<video id='" + id + "' class='video-js' controls preload='none' width='1280px' height='' poster='' ><source id='video-source' src='' type='video/mp4'></video>");
            //設定資源路徑
            $("#my-wrap").attr("src", $scope.videoUrl);
            videojs(id, {}, function () { //自動播放
                // Player (this) is initialized and ready.
                var myPlayer = videojs(id);
                videojs(id).ready(function () {
                    var myPlayer = this;
                    myPlayer.play();
                });
                videojs(id).on("click", function () {
                    if (myPlayer.paused()) {
                        $(".vjs-has-started .vjs-big-play-button").show();
                    } else {
                        $(".vjs-has-started .vjs-big-play-button").hide();
                    }
                })
            });
 

這樣即可以實現視訊頁面 課程的切換