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javascriptでitemの件数を指定し、シャッフルする関数

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忘備録です。
既に設置してあるliが多い時、無理やり件数を絞ってシャッフル表示がしたい時用です。

var shuffleItem = function (max) {
   var randomContent = [];
    i = 0;
    $('.itemList .item').each(function() {
        randomContent.push($(this).html());
    });

    randomContent.sort(function() {
        return Math.random() - Math.random();
    });

    $('.itemList .item').remove();

    for (i = 0; i < max; i++) {
        $('ul.itemList').append('<li class="item">' + randomContent[i] + '</li>');
    }
}

よりスマートな書き方があれば教えてください。

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