Fixed : issue/#2100

[NayanKhedkar]

set visited to current stage item when moving from small/medium screen size to large.

[NayanKhedkar]

Issue : adaptlearning/adapt_framework#2100

[oliverfoster]

            var wasDesktop = this.model.get('_isDesktop');
            this.setDeviceSize();
            var isDesktop = this.model.get('_isDesktop');
            if (wasDesktop !== isDesktop) this.replaceInstructions();
            this.calculateWidths();
            this.evaluateNavigation();
            /*set current stage item to visited when moving from small/medium screen size to large*/
            if (!isDesktop) return;
            var stage = this.model.get('_stage') || 0;
            if (this.getCurrentItem(stage)._isVisited) return;
            this.setStage(stage, true);

You don't need to define isDesktop at the top if you're going to redefine its value immediately afterward.
Reducing that double nesting of the two if blocks can be achieved by moving it to a separate function or by moving it to the end of the block and returning early. Really a separate function would work, something like setCurrentItemVisited() ?
Then it would be:

            var wasDesktop = this.model.get('_isDesktop');
            this.setDeviceSize();
            var isDesktop = this.model.get('_isDesktop');
            if (wasDesktop !== isDesktop) this.replaceInstructions();
            this.calculateWidths();
            this.evaluateNavigation();
            /*set current stage item to visited when moving from small/medium screen size to large*/
            if (isDesktop) this.setCurrentItemVisited();

setCurrentItemVisited: function() {
  var stage = this.model.get('_stage') || 0;
  if (this.getCurrentItem(stage)._isVisited) return;
  this.setStage(stage, true);
},

[moloko]

could you modify this to have a link to adaptlearning/adapt_framework#2100 i.e.

/**
 * need to set current stage item to visited when moving from small/medium screen size to large
 * see https://github.com/adaptlearning/adapt_framework/issues/2100
 */

[NayanKhedkar]

done.