Webmaster in a Nutshell, 3rd Edition By Robert Eckstein, Stephen Spainhour
Table of Contents
Chapter 11. JavaScript
DOMImplementation
DOM Level 1
Creates documents, checks DOM features
document .implementation
Methods
createHTMLDocument( title )
Creates and returns a new HTML Document object and populates it with <html>, <head>, <title>, and <body> elements. title is the text to appear in the <title> element. DOM Level 2.
hasFeature( feature , version )
Returns true if the implementation supports the specified version of the specified feature, or false otherwise . If no version number is specified, the method returns true if the implementation completely supports any version of the specified feature. Both feature and version are strings; for example, " core ", "1.0" or "html", "2.0".