如何在jQuery中使用自定义排序顺序对列表项进行排序 [英] How to sort list items using custom sort order in jQuery

问题描述

我的问题与我在Stack Overflow上发现的其他问题非常相似，但并不完全相同.

My question is very similar to a number of others I've found on Stack Overflow, but not quite the same.

我想基于每个项目中包含的跨度的内容对列表项进行排序-但要使用我可以定义的排序顺序.这是示例列表项的HTML:

I'd like to sort list items based on the content of a span contained within each item -- but using a sort order that I can define. Here's the HTML for a sample list item:

<li>
    <span class="fname">John</span>
    <span class="lname">Doe</span>
    <span class="year">Sophomore</span>
</li>

我想基于年份"跨度的内容进行排序，但是要按时间顺序而不是按字母顺序进行排序.显然，顺序是:

I want to sort based on the content of the "year" span, but chronologically rather than alphabetically. The order, obviously, needs to be:

• 新鲜人
• 二年级学生
• 初中
• 高级

我该怎么做?

仅供参考，我正在使用以下jQuery代码(效果很好)按姓氏按字母顺序排序:

Just for reference, I'm using the following jQuery code (which works perfectly) to sort alphabetically by last name:

function sortByLastName(){
    var myList = $('#foo ul');
    var listItems = myList.children('li').get();
    listItems.sort(function(a,b){
        var compA = $(a).find('.lname').text().toUpperCase();
        var compB = $(b).find('.lname').text().toUpperCase();
        return (compA < compB) ? -1 : (compA > compB) ? 1 : 0;
    });
    $(myList).append(listItems);
};

推荐答案

要匹配您的sortByLastName()函数，这将起作用:

To match your sortByLastName() function, this would work:

function sortByYear(){
  var myYears = ['Freshman', 'Sophomore', 'Junior', 'Senior'];
  var myList = $('#foo ul');
  var listItems = myList.children('li').get();
  listItems.sort(function(a,b){
    var compA = $.inArray($(a).find('.year').text(), myYears);
    var compB = $.inArray($(b).find('.year').text(), myYears);
    return (compA < compB) ? -1 : (compA > compB) ? 1 : 0;
  });
  $(myList).append(listItems);
}

只需使用 $ .inArray()即可找到大批.请注意，对于数组中未找到的值，这将返回-1，这会将这些元素放在列表的顶部.

Just use $.inArray() to find the indices of each school year within the array. Note that this will return -1 for values not found in the array, which will put those elements at the top of your list.

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