Jquery检查MVC视图中的所有动态复选框列表

Question

最近我创建了这个动态复选框,并在C#MVC Razor视图中显示它们.

<ul>
    @for (int i = 0; i < Model.sites.Count; i++)
    {
        <li>
            @Html.CheckBoxFor(m => m.sites[i].IsCheck)
            @Html.LabelFor(m => m.sites[i].IsCheck, Model.sites[i].SiteName)
            @Html.HiddenFor(m => m.sites[i].SiteId)
            @Html.HiddenFor(m => m.sites[i].SiteName)
        </li>
        for (int j = 0; j < Model.sites[i].Roomz.Count; j++)
        {
            @Html.CheckBoxFor(m => m.sites[i].Roomz[j].IsCheck)
            @Html.LabelFor(m => m.sites[i].Roomz[j].IsCheck, Model.sites[i].Roomz[j].RoomName)
            @Html.HiddenFor(m => m.sites[i].Roomz[j].RoomId)
            @Html.HiddenFor(m => m.sites[i].Roomz[j].RoomName)
        }
    }
</ul>

下面的图像是复选框的显示

如何使用jquery检查sites.ischeck以检查相同网站下的所有子项目？示例检查CO2也将检查套件1和2

Answer 1

修改html,以便您可以使用相对选择器,包括向复选框添加类名.

<ul>
    @for (int i = 0; i < Model.sites.Count; i++)
    {
        <li>
            @Html.CheckBoxFor(m => m.sites[i].IsCheck, new { class = "parent" })
            @Html.LabelFor(m => m.sites[i].IsCheck, Model.sites[i].SiteName)
            @Html.HiddenFor(m => m.sites[i].SiteId)
            @Html.HiddenFor(m => m.sites[i].SiteName)
            <div> // suggest you style this to give a margin-left so its indented relative to the parent
                for (int j = 0; j < Model.sites[i].Roomz.Count; j++)
                {
                    @Html.CheckBoxFor(m => m.sites[i].Roomz[j].IsCheck, new { class = "child" })
                    @Html.LabelFor(m => m.sites[i].Roomz[j].IsCheck, Model.sites[i].Roomz[j].RoomName)
                    @Html.HiddenFor(m => m.sites[i].Roomz[j].RoomId)
                    @Html.HiddenFor(m => m.sites[i].Roomz[j].RoomName)
                }
            <div>
        </li>
    }
</ul>

然后,您可以处理.change()"父"复选框的事件,并在同一<li>元素中获取"子"复选框

$('.parent').click(function() {
    var isChecked = $(this).is(':checked');
    var children = $(this).closest('li').find('.child');
    $.each(children, function(index, item) {
        $(this).prop('checked', isChecked);
    });
});

您可能还想要处理子复选框,这样如果您取消选中任何子项,父项也将被取消选中,或者如果您检查子项,并且还检查了所有子项,则将检查父项.

$('.child').click(function () {
    var parent = $(this).closest('li').find('.parent');
    var isChecked = $(this).is(':checked');
    if (!isChecked) {
        // the parent must be unchecked
        parent.prop('checked', false);
    } else {
        // check if all siblings have the same checked status
        var siblings = $(this).siblings('.child');
        var total = siblings.length;
        var matches = siblings.filter(function () {
            return $(this).prop('checked') == isChecked;
        }).length;
        if (matches === total) {
            parent.prop('checked', isChecked);
        }
    }
})