Function previewBindScroll

static/editor.md/editormd.amd.js:1779–1803

()

            };

            var previewBindScroll = function() {
                
                preview.bind(mouseOrTouch("scroll", "touchmove"), function(event) {
                    var height    = $(this).height();
                    var scrollTop = $(this).scrollTop();         
                    var percent   = (scrollTop / $(this)[0].scrollHeight);
                    var codeView  = codeMirror.find(".CodeMirror-scroll");

                    if(scrollTop === 0) 
                    {
                        codeView.scrollTop(0);
                    }
                    else if (scrollTop + height >= $(this)[0].scrollHeight)
                    {
                        codeView.scrollTop(codeView[0].scrollHeight);                        
                    }
                    else 
                    {
                        codeView.scrollTop(codeView[0].scrollHeight * percent);
                    }
                    
                    $.proxy(settings.onpreviewscroll, _this)(event);
                });

            };

            var previewUnbindScroll = function() {
                preview.unbind(mouseOrTouch("scroll", "touchmove"));