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Math.maxで配列中の最大値を取得する

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普通のJSで配列の最大値を取る場合ってどうします?Math.maxは普通2個の引数を取って大きい方を返しますが、実は何個でも引数を取れます。これを応用してMath.maxをapplyすると適当な配列の最大値を返せます。

Math.max.apply(null, [1,4,8,7]); //=> 8

jquery.masonry.jsで使われてます。
https://github.com/desandro/masonry/blob/master/jquery.masonry.js#L177

最近はunderscore.js等でmaxなどを使うかもしれませんが、備忘録として。

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