排序数据属性 [英] Sorting data attributes

问题描述

我编写了一个函数，该函数应该按价格高->低的顺序对data-cost数据属性进行排序.当data-cost都具有相同数量的数字时，它可以正常工作，但是如果我添加具有不同数量的数字的data-cost，则该功能将不再起作用.我想保持现在的结构，但是由于我对JS还是比较陌生，因此我对更多可重用的解决方案持开放态度.预先感谢您的帮助.

I wrote a function that's supposed to sort a data-cost data attribute by price high -> low. It works fine when the data-cost all have the same amount of numbers, but if I add data-costs that have different amounts of numbers, the function no longer works. I'd like to keep the same structure that I have now, but as I'm still relatively new to JS, I'm open to more reusable solutions. Thanks in advance for any help.

小提琴:

http://jsfiddle.net/dn6mja0t/

HTML:

<a id="sort" href="#">Price High to Low</a>

<ul class="returned-list">
    <li data-cost="101">101</li>
    <li data-cost="103">103</li>
    <li data-cost="106">106</li>
    <li data-cost="42">42</li>
</ul>

JS:

var sortHL = function () {
    function compare(a,b) {
        if (a.cost > b.cost)
            return -1;
        if (a.cost < b.cost)
            return 1;
        return 0;
    }

    var items = [];
    $('.returned-list li').each(function() {
        var item = {
            cost: $(this).attr('data-cost'),
            contents: $(this)[0].outerHTML
        };
        items.push(item);
    });

    items.sort(compare);
    $('.returned-list').html('');
    for(var i=0;i<items.length;i++) {
        $('.returned-list').append(items[i].contents);
    }
};

$('#sort').on('click', function () { 
    sortHL();
});

推荐答案

执行强制转换:

cost: Number($(this).attr('data-cost')),

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