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Document: append() method

The Document.append() method inserts a set of Node objects or string objects after the last child of the document. String objects 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

js

append(param1)
append(param1, param2)
append(param1, param2, /* …, */ paramN)

Parameters

param1, …, paramN

A set of Node or string objects to insert.

Return value

None (undefined).

Exceptions

HierarchyRequestError DOMException

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.

js

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):

js

let doc = new Document();
let html = document.createElement("html");
doc.append(html);

doc.children; // HTMLCollection [<html>]

Specifications

Specification
DOM Standard
# ref-for-dom-parentnode-append①

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
append 54 17 49 No 41 10 54 54 49 41 10 6.0

See also

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/Document/append