Jquery 中each循环嵌套的使用示例教程

1、从MVC返回的Json数据如下：

2、下面是客户端实现的示例：

$.post("/admin/GetPermissionsForRole", function (data,status) {
if (status == "success") {
    var ghtml = "";
    $.each(data, function (i, items) { //items相当于二维数组里的每一个一维数组
        if (items["ParentPermissionId"] == "")
        {
            ghtml += "<div class='panel panel-transparent'> <ul class='list-group'>";
            ghtml += "<div class='panel-heading'><i class='fa fa-list-ul'></i>&nbsp;<span class='panel-title text-bold'>" + items["PermissionName"] + "</span></div>";
            ghtml += "<ul class='list-group'>";
            $.each(data, function (i, sitems) {
                if (sitems["ParentPermissionId"] == items["PermissionId"])
                {
                    ghtml += "<li class='list-group-item'>";
                    ghtml += "<h6 class='text-bold text-semibold text-xs' style='margin:20px 0 10px 0'>";
                    ghtml += "<label class='px-single'><input type='checkbox' class='px'><span class='lbl'>&nbsp;</span></label>&nbsp;&nbsp;" + sitems["PermissionName"];
                    ghtml += "</h6>";
                    ghtml += "<p>";
                    $.each(data, function (i, ssitems)
                    {
                     if (ssitems["ParentPermissionId"] == sitems["PermissionId"])
                     {
                       ghtml += "<label class='checkbox'><input type='checkbox' class='px' /><span class='lbl'>" + ssitems["PermissionName"]+ "</span></label>";
                     }
                    })
                    ghtml += "</p>";
                    ghtml += "</li>";
                }

            })
            ghtml += "</ul></div>";
        }
    });
    $("#premlist").html(ghtml);
}
})

3、最后要实现的效果如下：

//权限"全选或者取消"功能代码，此代码必须要放在append()的后面，不然不起作用
var xsChk = 'px';//定义的样式
var xsChkAll = "input[type='checkbox'][class='" + xsChk + "'][name]";//所有定义此样式的checkbox
$(xsChkAll).each(function () {
    var name = $(this).attr("name");
    name = "input[type='checkbox'][class!='" + xsChk + "'][name='" + name + "']";//此全选框下面的子checkbox
    $(this).on('click', function () {
        $(name).attr("checked", $(this)[].checked);
    })
    var xschk = $(this);
    $(name).on('click', function () {
        var IAll = $(name).length; //此子项目下所有checkbox的个数
        var IChk = $(name + ":checked").length; //此子项目下所有勾选checkbox的个数
        var isAllChecked = true; //是否是全选
        if (IAll != IChk) {
            isAllChecked = false;
        }
        $(xschk).attr("checked", isAllChecked);
    });
});
//会选或者取消功能结束