Вы можете прикрепить событие наведения мыши к каждому узлу.Вот пример
var orgchart = new getOrgChart(document.getElementById("people"), {
updatedEvent: mouseoverListener,
dataSource: [
{ id: 1, parentId: null, Name: "Amber McKenzie" },
{ id: 2, parentId: 1, Name: "Ava Field" },
{ id: 3, parentId: 1, Name: "Evie Johnson" }]
});
function mouseoverListener() {
var boxes = document.querySelectorAll("[data-node-id]");
for (i = 0; i < boxes.length; i++) {
boxes[i].addEventListener("mouseover", function () { alert("hovered node ID is " + this.getAttribute("data-node-id")) });
}
}
mouseoverListener();