text:     //play control
      $.extend(Video.prototype, {
          $_playbtn: '',
          $_playFullBtn: '',
          playRender: function() {
              var playpause = $('<div class="yvp_button yvp_play_pause">\
                      <div class="yvp_button_under"></div>\
                      <button type="button" title="播放/暂停">\
                          <span class="yvp_btn_val">\
                          </span>\
                      </button>\
                  </div>');
              this.$_control.append(playpause);
              var fullPlay = $('<a href="javascript:;" class="yvp_overlay_play">\
                  <span class="yvp_button_play"></a>\
              </div>');
              this.$el.append(fullPlay);
              //cache button element
              this.$_playbtn = playpause;
              this.$_playFullBtn = fullPlay;
  
              this._playControl()
          },
          _playControl: function() {
              var __ = this,
                  video = this.$video;
              //when video is paused
              video.on('pause', function() {
                  __._playChangeStatus();
              });
              video.on('play', function() {
                  __._playChangeStatus();
              })
  
              //trigger events
              this.$_playbtn.on('click', 'button', function() {
                  __._play_on_off();
              })
              this.$_playFullBtn.on('click', function() {
                  __._play_on_off();
              });
              this._playChangeStatus();
          },
          _play_on_off: function() {
              var __ = this,
                  video = __.$video; 
              //如果暂停时参数为true,则不显示
              if(__._hideConbar)return;  
              if (video[0].paused) {
                  video[0].play();
              } else {
                  video[0].pause();
              }
          },
          //播放
          play: function(showConBar) {
              if(typeof showConBar === 'boolean' && showConBar){
                  this._hideConbar = false;
              }
              this.$video[0].play();
          },
          //暂停
          pause:function(hideConBar){
  
              if(typeof hideConBar === 'boolean' && hideConBar){
                  this._hideConbar = true;
                  this._controlBar_hide();
              }else{
                  this._hideConbar = false;
              }
              this.$video[0].pause();
          },
          _playChangeStatus: function() {
              var video = this.$video;
              if (video[0].paused) {
                  this._play_playicon();
                  //如果暂停时参数为true,则不显示
                  if(this._hideConbar)return; 
                  this.$_playFullBtn.show();
              } else {
                  this._play_puaseicon();
                  this.$_playFullBtn.hide();
              }
          },
          _play_playicon: function() {
              var icon = this.$_playbtn.find('.yvp_btn_val');
              icon.html('<em class="yvphicon yvphicon-play"></em>');
          },
          _play_puaseicon: function() {
              var icon = this.$_playbtn.find('.yvp_btn_val');
              icon.html('<em class="yvphicon yvphicon-pause"></em>');
          }
      });