Tab Atkins Jr. schrieb:
On Thu, Aug 6, 2009 at 6:14 PM, Cready, James<[email protected]> wrote:
You make a great point. But whether or not you use the XML/XHTML <syntax/>
or the HTML 4 <syntax> doesn¹t matter much. Since like I showed in my
previous example: the instant you specify a src attribute on your opening
<script> tag the browser will not execute anything inside the tags.
Regardless of whether or not you even specified a value for it.
[snip]
It seems like there should be some consistency between the two, either:
A) Allow <link> to pull in all types of external files:
CSS: <link rel="stylesheet" type="text/css" href="style.css" />
JS : <link rel="javascript" type="text/javascipt" href="script.js" />
or
B) Allow ONLY <script> and <style> to pull in their external files:
CSS: <style src="style.css" type="text/css"></style>
JS : <script src="script.js" type="text/javascript"></script>
I (and others in this thread, and probably a lot of people on the web
as a whole) agree with you that it would be nice to have some
consistency there (I favor the <link> approach myself). However, the
world is neither kind nor just, and one of HTML5's explicit guidelines
is to codify and standardize browser behavior in the wild. We can
improve it when it's possible to do so in a backwards-compatible way,
but otherwise it's out.
The favored example:
<link rel="script" type="text/javascript" href="script.js">
would actually not break pages in legacy browsers, unless their
functionality depends on the script. They would just not find and thus
not execute the script, and possibly throw "function does not exist"
errors.
Authors are encouraged to code web pages in a way that the functionality
is provided, or at least degrades nicely, in no-script environments. So
I assume that a properly coded page would work or degrade nicely in
legacy browsers with the <link> syntax. Anyway I am not sure about this,
as I am aware of the fact that a missing script file is not the same as
a user agent without script execution. At least the following example
would work in Firefox - if the foo() function is not defined,
otherpage.php will be called:
<a href="otherpage.php" onClick="return foo()">Click here</a>
