What can I do if I choose only child multiple times about jqtree

[NickHi]

How to verify whether it is a node after clicking?
I just want to select child.

[mbraak]

Jqtree adds a jqtree-loading css class to the node when data is loading. Maybe you can do the same.

• The class is added to the li element.
• Also see

  jqTree/src/elementsRenderer.ts

  Line 308 in c262efa

  classes.push("jqtree-loading");

[mbraak]

This example only allows the selection of child nodes. It uses the tree.click event. Also see https://mbraak.github.io/jqTree/#event-tree-click

const $tree = $("#tree1");

$tree.tree({
    data: ExampleData.exampleData,
    selectable: true,
});

$tree.on("tree.click", (e) => {
    const node = e.node;

    if (node.children.length >= 1) {
        // You can prevent selection using preventDefault
        e.preventDefault();
    } else {
        console.log("child");
    }
});

[NickHi]

I want the loading state to be displayed before the current node
I don't know what to do with it

$tree.on( 'tree.click', function(e) {
	var _Node = e.node;
	if(_Node.ajaxState){
		$tree.tree('selectNode',_Node);
		return false;
	}else{
		$.ajax({
			type: "POST",
			url: "http://*****/search.php",
			data: {
				act:'list',
				id: _Node.id
			},
			dataType: "json",
			success: function(json){
				if(json.state=='success'){
					_Node['ajaxState'] = true;
					$tree.tree('updateNode',_Node,_Node);
					for(var i=0; i<json.res.length; i++){
						$tree.tree('appendNode',json.res[i],_Node);
					}
					$tree.tree('openNode',_Node);
				}else{
					alert(json.des);
				}
			}
		});
	}
})

[mbraak]

What does this code do? Does it execute some action on the server when a node is clicked?

[NickHi]

What does this code do? Does it execute some action on the server when a node is clicked?

Click and load the child node