javascript - 如何将这三个功能重构为一个？

Question

只有一行差异，我想知道这是否可能!

function sortHot() {
    var order = [];

    $("#container").children(".submission-preview").each(
        function() {
            var key = $(this).attr('id');

            var value = $("div#" + key.replace("sub", "votes")).html() * key.replace("sub", "");

            order.push([key, value]);
        }
    );

    return order;
}

function sortNew() {
    var order = [];

    $("#container").children(".submission-preview").each(
        function() {
            var key = $(this).attr('id');

            var value = key.replace("sub", "");

            order.push([key, value]);
        }
    );

    return order;
}

function sortTop() {
    var order = [];

    $("#container").children(".submission-preview").each(
        function() {
            var key = $(this).attr('id');

            var value = $("div#" + key.replace("sub", "votes")).html();

            order.push([key, value]);
        }
    );

    return order;
}

Answer 1

概括键到值转换的一种更“实用”的方法是包装一个通用排序函数，该函数接受回调参数以在键上应用该转换。例如:

function sortGeneric(callback) {
    var order = [];
    $("#container").children(".submission-preview").each(function() {
        var key = $(this).attr('id');
        var value = callback(key);
        order.push([key, value]);
    });
    return order;
}

function sortHot() {
    return sortGeneric(function (key) {
        return $("div#" + key.replace("sub", "votes")).html() * key.replace("sub", "");
    });
}

function sortNew() {
    return sortGeneric(function (key) {
        return key.replace("sub", "");
    });
}

function sortTop() {
    return sortGeneric(function (key) {
        return $("div#" + key.replace("sub", "votes")).html();
    });
}