- From: Alexandre Morgaut <Alexandre.Morgaut@4d.com>
- Date: Wed, 9 Feb 2011 11:08:20 +0100
Another approach:
The link tag is meant to support a "prefetch" value for the "rel" attribute asking to preemptively cache the resource:
- http://blog.whatwg.org/the-road-to-html-5-link-relations#rel-prefetch
- http://davidwalsh.name/html5-prefetch
We can then write:
<link rel="prefetch" type="text/javascript" src="myscript.js">
let the link HTML Element have an execute() method when the "type" attribute is one off a User-Agent supported Scripting Media Types:
+-----------------------------------------------------+
| text/javascript | text/ecmascript |
| text/javascript1.0 | text/javascript1.1 |
| text/javascript1.2 | text/javascript1.3 |
| text/javascript1.4 | text/javascript1.5 |
| text/jscript | text/livescript |
| text/x-javascript | text/x-ecmascript |
| application/x-javascript | application/x-ecmascript |
| application/javascript | application/ecmascript |
+-----------------------------------------------------+
(source: RFC 4329 "Scripting Media Types" - http://www.rfc-editor.org/rfc/rfc4329.txt )
let the execute property value be null otherwise
Note 1:
Glenn just told me: "I doubt it's possible to change an object's interface based on the current value of an attribute."
So, the execute() method may exits everytime and throw an Error like:
"Wrong call, the resource is not executable"
Note2
The rel attribute can accept several values.
- http://www.whatwg.org/specs/web-apps/current-work/multipage/semantics.html#attr-link-rel
It may then accept an additional "script" value,
The link tag may take profit from a getElementsByRelationship(relationName) method similar to getElementsByClassName(className)
This way, prefetched scripts could be more easily retrievable (as any other link tag)
Received on Wednesday, 9 February 2011 02:08:20 UTC