当我们单击子复选框时，如何获取父母的父母ID

Question

i am having an kendo treeview with checkbox template.

my html code

<div id="treeview-left" style=" height: 375px; position: absolute;top: 30px;"></div>

I have defined the treeview like:

var treeview1 = $('#treeview-left').kendoTreeView({
            select: onSelect,
            checkboxTemplate: kendo.template($("#treeview-checkbox-template").html()),            
            dragAndDrop: true,
            dataSource: parent, 
            dataTextField: ["parentName", "childName"]
        }).data("kendoTreeView");

And the checkbox template is defined like:

<script id="treeview-checkbox-template" type="text/kendo-ui-template">
            <input type="checkbox" />
</script>

And the datasource will be

var parent = new kendo.data.HierarchicalDataSource({
            type: "POST",
            dataType: "json",
            transport: {
                read: {
                    url: "/Projects/leftdisplay"
                }
            },
            schema: {
                model: {
                    id: "parentid",
                    hasChildren: "childName",
                    children: child
                }
            }
        });

now the child of the parent will be like:

   var child = {
            type: "POST",
            dataType: "json",
            transport: {
                read: {
                    url: function (options) {
                        return kendo.format("/projects/modulesleftdisplay?parentid=" + options.parentid + "&roleid=" + rolevalue + "&projectid=" + projectid + "");
                    }
                }
            },
            schema: {
                model: {
                    id: "childid",
                    hasChildren: function () {
                        return false;
                    }
                }
            }
        };

Now when i am clicking on the child checkbox i want to get the parent id of the selected child. How can i get that.

I have written code like

$("#treeview-left [type=checkbox]").live('change', function (e) {      
    var chkBox = $(this)
    var parentid = chkBox.parent();
    var date = $('#treeview-left').data('kendoTreeView').dataItem(parent_id);
    var parid = date.id;
    var childid = $('#treeview-left').data('kendoTreeView').dataItem(parentid);
});

but the parid is not getting. How can i get the parent id of the selected child. Any help is appreciated.

Answer 1

Try this:

// Find all the checkboxes:
var checkboxes = Array.prototype.slice.call(document.querySelectorAll('#yourFormsID input[type=checkbox]'));

checkboxes.forEach(function(checkbox) {                //<== loop through checkboxes
    checkbox.addEventListener('change', function() {   //<== When clicked:
        console.log(this.parentNode.id);               //<== Log the id of the checkbox's parentNode in the console.
    }, false);
});

Here's a demo . Be sure to open the console.

Answer 2

you can use this

   var parentId = $(this).parent().closest(parent element).attr('id')

Example:

 var parentId  = $(this).parent().closest('li').attr('id')

instead of

 var chkBox = $(this)

 var parentid = chkBox.parent();

to get the parent id.