如何为 List.js 编写排序函数?

How to write sort function for List.js?

我使用 list.js 对 table 的数据进行简单排序。排序功能工作正常,但我想修改它的初始行为。当用户第一次看到 table 时,he/she 应该将一列中具有某个特定值的记录(在本例中使用我的本地货币)放在顶部。只是最初,以后的排序应该以标准方式工作。

让我们看看代码:

<table id="accountsList">
<thead>
    <tr>
        <th scope="col" class="sort" data-sort="currency-td" aria-role="button"><span>Currency</span></th>
        <th scope="col" class="sort" data-sort="accountNo-td" aria-role="button"><span>Account number</span></th>
        <th scope="col" class="sort td-centered" data-sort="used-td" aria-role="button"><span>Used</span></th>
    </tr>
</thead>
<tbody class="list">
    <tr>
        <td class="currency-td">EUR</td>
        <td class="accountNo-td">53106010151036926643566665</td>
        <td class="used-td td-centered">
            <input type="checkbox" checked>
        </td>
    </tr>
     <tr>
        <td class="currency-td">PLN</td>
        <td class="accountNo-td">83106010151036926643522665</td>
        <td class="used-td td-centered">
            <input type="checkbox">
        </td>
    </tr>
     <tr>
        <td class="currency-td">PLN</td>
        <td class="accountNo-td">59996010151036926643566665</td>
        <td class="used-td td-centered">
            <input type="checkbox" checked>
        </td>
    </tr>
     <tr>
        <td class="currency-td">USD</td>
        <td class="accountNo-td">33106010151036999643566675</td>
        <td class="used-td td-centered">
            <input type="checkbox">
        </td>
    </tr>
</tbody>

<script type="application/javascript">
$(document).ready(function(){
var options = {
    valueNames: ['currency-td', 'accountNo-td', 'used-td']
};

var accountsList = new List('accountsList', options);

accountsList.sort("currency-td", {
    order: "desc"
});
});
</script>

我唯一想做的就是把所有带有 'PLN' 货币的记录放在开头的顶部。为什么我不按我想要的方式在 HTML 中按我想要的方式对它们进行排序,然后在没有初始排序的情况下启用排序?因为实际上,这些记录是由PHP生成的(我简化了上面的代码,只是展示了生成HTML的例子),我无法预测我会得到什么数据。

我需要在这个地方写一个排序函数:

accountsList.sort("currency-td", {
    order: "desc",
    sortFunction: function () {}
});

你有什么想法吗? :)

尝试使用 List.js 的 alphabet 功能,smthg like :

var options = {
    valueNames: ['currency-td', 'accountNo-td', 'used-td']
};

var accountsList = new List('accountsList', options);

accountsList.sort("currency-td", { alphabet: "PLNABCDEFGHIJKMOQRSTUVXYZplnabcdefghijkmoqrstuvxyz" }
);

这在此处记录http://listjs.com/api/#sort

我是这样想出来的:

accountsList.sort('currencyTd', {
        order: 'asc',
        sortFunction: function (a, b) {
            if ((a.currencyTd === 'PLN') != (b.currencyTd === 'PLN')) {
                return a.currencyTd === 'PLN' ? 1 : -1;
            }
            return a.currencyTd > b.currencyTd ? 1 :
                   a.currencyTd < b.currencyTd ? -1 : 0;
        }
    });

建议的解决方案: