Document: append() method
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since April 2018.
The Document.append() method inserts a set of Node objects or strings after the last child of the document. Strings are inserted as equivalent Text nodes.
This method appends a child to a Document. To append to an arbitrary element in the tree, see Element.append().
Syntax
append(param1) append(param1, param2) append(param1, param2, /* …, */ paramN) Parameters
param1, …,paramN-
A set of
Nodeobjects or strings to insert.
Return value
None (undefined).
Exceptions
HierarchyRequestErrorDOMException-
Thrown when the node cannot be inserted at the specified point in the hierarchy.
Examples
Appending a root element to a document
If you try to append an element to an existing HTML document, it might throw a HierarchyRequestError DOMException given a <html> element already exists.
let html = document.createElement("html"); document.append(html); // HierarchyRequestError: The operation would yield an incorrect node tree. If you are creating a new document without any existing element, you can append a root HTML element (or a root SVG element):
let doc = new Document(); let html = document.createElement("html"); doc.append(html); doc.children; // HTMLCollection [<html>] Specifications
| Specification |
|---|
| DOM # ref-for-dom-parentnode-append① |