单击fancytree.js的第二级时如何警告消息

Question

I'm using fancytree.js i want to alert a message when i clic on a node. but not all nodes. Just when clicking on the nodes in the 2nd level. Example

  <ul> <li>1</li> <ul> <li>1.1</li> <li>1.2</li> </ul> <li>2</li> <ul> <li>1.1</li> <li>1.2</li> </ul> <li>3</li> </ul> 

i want just alert when on clicking on 1.1 and 1.2 or 2.1 and 2.2

$(document) . ready(function () {
    var data = '{{ path('gouvernorat_map') }}';
    $("#filter_switches") . fancytree({
        source: {
            url:data
        },
        icon: false,
        keyboard: true,
        quicksearch: false,
        tooltip: false,
        click: function (event, data) {
            alert(data . node + '---' + data . node . key + '---' + data . node . title + '---');
        }
    });
});

this alert when i click in any level. so how can i did it?

Answer 1

you can ask the level from any node by using data.node.getLevel() . If you put this into an if-statement, you can filter by level.

For more information, see the documentation of fancytree

Good luck