How do I delete a node based on its ID

[ttoby]

How do I delete a node based on its ID ？For example, I now want to delete all nodes of type XXX in the diagram.How can this be done?

[Niklas_Kiefer]

You can do that via the element registry. Either by id

const elementRegistry = modeler.get("elementRegistry");

const startEvent = elementRegistry.get("StartEvent_1");

or by type

import { is } from "bpmn-js/lib/util/ModelUtil.js";

const events = elementRegistry.filter((element) => is(element, "bpmn:Event"));

And then delete the elements via the modeling API.

const modeling = modeler.get("modeling");

modeling.removeElements(events);

Source: remove elements by type - CodeSandbox