javascript - jQuery 可排序发布数据，但没有数据

Question

谁能告诉我我在这里缺少什么。

我的数据似乎总是空的，我做错了什么？

$(document).ready(function () {
    $(".nav").sortable({
        connectWith: ".nav",
        axis: 'y',
        update: function (event, ui) {

            var data = $(this).sortable('serialize');   
            // POST to server using $.post or $.ajax
            alert(data);
        }
    }).disableSelection();
});

FIDDLE

Answer 1

根据 sortable API:

If serialize returns an empty string, make sure the id attributes include an underscore. They must be in the form: "set_number" For example, a 3 element list with id attributes "foo_1", "foo_5", "foo_2" will serialize to "foo[]=1&foo[]=5&foo[]=2". You can use an underscore, equal sign or hyphen to separate the set and number. For example "foo=1", "foo-1", and "foo_1" all serialize to "foo[]=1".

在您的 li 中添加一些带下划线的 ID，然后就可以了。

演示:http://jsfiddle.net/tymeJV/vzQ2X/4/