ThegetHTML() method of theElement interface is used to serialize an element's DOM to an HTML string.

The method provides an options argument that enables the serialization of child nodes that are shadow roots.The options can be used to include nested shadow roots that have been set asserializable, and/or a specified array ofShadowRoot objects, which may be either open or closed.

Without arguments, child nodes that are shadow roots are not serialized, and this method behaves in the same way as reading the value ofElement.innerHTML.

Note that some browsers serialize the< and> characters as< and> when they appear in attribute values (seeBrowser compatibility).This is to prevent a potential security vulnerability (mutation XSS) in which an attacker can craft input that bypasses asanitization function, enabling a cross-site scripting (XSS) attack.

Syntax

getHTML(options)

Parameters

optionsOptional

An options object with the following optional parameters:

serializableShadowRoots

A boolean value that specifies whether to includeserializable shadow roots.The default value isfalse.

shadowRoots

An array ofShadowRoot objects to serialize.These are included regardless of whether they are marked asserializable, or if they are open or closed.The default value is an empty array.

Return value

A string that represents the HTML serialization of the element.

Exceptions

None.

Specifications

Browser compatibility

See Also

• ShadowRoot.getHTML()
• Element.innerHTML
• Element.setHTMLUnsafe()
• ShadowRoot.setHTMLUnsafe()