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JavaScriptでかっこよくthisを回避する

Posted at
var a = {
    f: function() {
        // do something
    }
};

こんな感じのオブジェクトがあるとき、

a.f.call(null);

こんなコードを書くことがあります。Function#call()メソッドを使ってa.f()の中でthisaになるのを避けているんですけど、わりとダサイ感じです。

(0, a.f)();

こうすることで同じことができることに気づいたのでメモ。

('unset this', a.f)();

これだとコードの意図も書いておけて、なんかかっこいい気がしました。タイプ数増えちゃいますけど。

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