JavaScript でグローバル領域を汚染しているプロパティを見つける
グローバルオブジェクトをガンガン汚染してる得体の知れない HTML をメンテせざるを得ないこともあったりします。(ちょっと韻踏んでる)
ソースコード直リンク
iframe で生成したピュアな window オブジェクトと差分を取ることでグローバルリークしているプロパティを探せます。ちなみに Tumblr のダッシュボードはこんな感じ。
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多すぎ！
追記 (2013/11/12 2:46)
@haya14busa さんにブックマークレット化して頂きました。お試しあれ。
http://haya14busa.com/js-global-leak-detector-marklet/