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.
TheDocument.append() methodinserts a set ofNode objects or strings afterthe last child of the document. Stringsare inserted as equivalentText nodes.
This method appends a child to aDocument. To append to an arbitrary element in the tree, seeElement.append().
Syntax
append(param1)append(param1, param2)append(param1, param2, /* …, */ paramN)Parameters
param1, …,paramNA set of
Nodeobjects or strings to insert.
Return value
None (undefined).
Exceptions
HierarchyRequestErrorDOMExceptionThrown 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 aHierarchyRequestErrorDOMException 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 |