ZUML Reference/ZUML/Processing Instructions/link

<syntax lang="xml" >

<?link [href="uri"] [name0="value0"] [name1="value1"] [name2="value2"] [if="..."] [unless="..."]?>
<?meta [name0="value0"] [name1="value1"] [name2="value2"] [if="..."] [unless="..."]?>
<?script type="text/javascript" [src="uri"] [charset="encoding"]
 [content="javascript"] [if="..."] [unless="..."]?> 

</syntax>

Since : 3.6.2

These are so-called header elements in HTML. They are generated inside the HEAD element. The meta tags are generated before ZK default JavaScript and CSS files, while the other tags are generated after ZK default JavaScript and CSS files. Currently only HTML-based clients (so-called browsers) support them.

Developers can specify whatever attributes with these header directives. ZK only encodes the URI of the href and src attribute (by use of the encodeURL method of the Executions class). ZK generates all other attributes directly to the client.

Notice that these header directives are effective only for the main ZUL page. In other words, they are ignored if a page is included by another pages or servlets. Also, they are ignored if the page is a zhtml file.

<syntax lang="xml" >

<?link rel="alternate" type="application/rss+xml" title="RSS feed"
 href="/rssfeed.php"?>
<?link rel="shortcut icon" type="image/x-icon" href="/favicon.ico"?>
<?link  rel="stylesheet" type="text/css" href="~./zul/css/ext.css.dsp"?>

<?script type="text/javascript" src="/js/foo.js"?> <?script type="text/javascript" content="var foo = true; if (zk.ie) foo = false;"?>

<window title="My App">
    My content
</window>

</syntax>

Alternatives

In addition to the script directive, you could use the script component to embed JavaScript code. The script component supports more features such as defer, but it has some memory foot print at the server (since it is a component).

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