Show Unplayed Heros in Dota2 from your person Dotabuff heros page.

unplayed_heroes.js

(function() { 
	var all = ["Abaddon","Alchemist","Ancient Apparition","Anti-Mage","Axe","Bane","Batrider","Beastmaster","Bloodseeker","Bounty Hunter","Brewmaster","Bristleback","Broodmother","Centaur Warrunner","Chaos Knight","Chen","Clinkz","Clockwerk","Crystal Maiden","Dark Seer","Dazzle","Death Prophet","Disruptor","Doom","Dragon Knight","Drow Ranger","Earthshaker","Earth Spirit","Elder Titan","Ember Spirit","Enchantress","Enigma","Faceless Void","Gyrocopter","Huskar","Invoker","Io","Jakiro","Juggernaut","Keeper of the Light","Kunkka","Legion Commander","Leshrac","Lich","Lifestealer","Lina","Lion","Lone Druid","Luna","Lycan","Magnus","Medusa","Meepo","Mirana","Morphling","Naga Siren","Nature's Prophet","Necrophos","Night Stalker","Nyx Assassin","Ogre Magi","Omniknight","Outworld Devourer","Phantom Assassin","Phantom Lancer","Phoenix","Puck","Pudge","Pugna","Queen of Pain","Razor","Riki","Rubick","Sand King","Shadow Demon","Shadow Fiend","Shadow Shaman","Silencer","Skywrath Mage","Slardar","Slark","Sniper","Spectre","Spirit Breaker","Storm Spirit","Sven","Templar Assassin","Terrorblade","Tidehunter","Timbersaw","Tinker","Tiny","Treant Protector","Troll Warlord","Tusk","Undying","Ursa","Vengeful Spirit","Venomancer","Viper","Visage","Warlock","Weaver","Windranger","Witch Doctor","Wraith King","Zeus"],  res = [], min_games    = 0;
 
	$('.cell-xlarge').each(function() {
		if(($($(this).closest('tr').find('td')[2]).text() - 0) > min_games)
			res.push($(this).find('a').text());
	}); 
	
	var unplayed = all.filter(function(i) {return !(res.indexOf(i) > -1);}); 
	alert("Unplayed: " + unplayed + "(Total: " + unplayed.length + ")"); 
})();