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For example here the code goes like this:
<html lang="en">
<head>
<!-- whatever -->
<script>
$(function() {
$( "#datepicker" ).datepicker();
});
</script>
</head>
<!-- whatever -->
Note that <script> should have contained type attribute (perhaps set to "text/javascript") but it is not present here.
This is not the only example I've seen. Such code makes Visual Studio editor unhappy - it underlines <script> and says there should be a type attribute. It also makes me curious big time.
Why is type often omitted? What happens if I add type="text/javascript" - will jQuery break or something?
467
That's probably because HTML5 does not require a type attribute on <script> elements (it defaults to "text/javascript").
130
In HTML 5 it's now set by default that the script will be of type JavaScript, so there's no need to specify it. HTML 4.01 does require it though, it seems.
See here: http://www.w3.org/TR/html401/interact/scripts.html#h-18.2.1
And: http://www.w3.org/TR/html5/scripting-1.html#script
22
It is no longer a requirement in html5.
http://www.w3.org/html/wg/drafts/html/master/scripting-1.html
42
The type tag is optional.
Default programming languages in all browsers has been JavaScript so that is what it defaults to. In XHTML, this attribute is required and unnecessary. In HTML, it is better to leave it out.
The browsers will know it is Javascript.
24
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