Html5 tips: getting head elements through document. head

Comments: Get the head element through document. head in html5

Today, I saw a foreign website and found that the following elements of the head obtained by people:

The Code is as follows:
Var head = document. head | document. getElementsByTagName ('head') [0];

The following is a common method. We see document. head for the first time. I found it was html5. It's really easy. It's done with a single attribute.

Of course, IE6/7/8 is not supported. IE9/Safari/Chrome/FF/Opera are supported (the latest version ). Record.

The HTMLDocument interface in html4 is as follows:

The HTMLDocument interface in html5 is as follows:

Related:

Http://www.w3.org/TR/DOM-Level-2-HTML/html.html#ID-26809268

Http://www.w3.org/TR/html5/dom.html#html-documents

Http://msdn.microsoft.com/en-us/library/gg593004%28v=VS.85%29