HTML DOM Figcaption Object
Figcaption Object 
The Figcaption Object is new in HTML5.
The Figcaption object represents an HTML <figcaption> element.
Access a Figcaption Object
You can access a <figcaption> element by using getElementById():
Create a Figcaption Object
You can create a <figcaption> element by using the document.createElement() method:
Standard Properties and Events
The Figcaption object also supports the standard properties and events.
Related Pages
HTML reference: HTML <figcaption> tag
