## mark a section (Learn more)

var itemsByIndex = []; var itemsByObject = []; items = document.body.getElementsByTagName('li'); for (var i=0; i<items.length; i++) { itemsByIndex[i] = items[i]; itemsByObject[items[i]] = i; } window.status = 'itemsByIndex:' + itemsByIndex.length + ', ItemsByObject:' + itemsByObject.length; // itemsByIndex shows the proper count but itemsByObject is empty?

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