append
Appends a new item to the children data source and initializes it if necessary.
Parameters
model Object|kendo.data.Node
The data for the new item.
Example - append child nodes
<script>
var parent = new kendo.data.Node({ text: "Parent" });
parent.append({ text: "Child" });
/* The result can be observed in the DevTools(F12) console of the browser. */
console.log(parent.children.data().length); // outputs "1"
var child = parent.children.at(0);
/* The result can be observed in the DevTools(F12) console of the browser. */
console.log(child.text); // outputs "Child"
</script>