JavaScript DHTML/Node Operation/documentElement
"documentElement" Example
<source lang="html4strict">
<html> <body> <button onClick="alert(document.documentElement.nodeName);">Root Node</button> </body> </html>
</source>
<source lang="html4strict">
<html> <body> <button onClick="alert(document.documentElement.nodeName);">Root Node</button> </body> </html>
</source>