Issues with most basic e4x test

Question

When I load a page containing e4x in FF 3.5, I get no inkling that e4x even exists in the browser's JS implementation. Notes below, but here's my HTML :

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <title>e4x test</title>
    <script type="text/javascript" src="lib/dojo/dojo/dojo.js">
    </script>
    <script type="text/javascript;e4x=1">
        function hello() {
            var x = new XML();
            x = <foo></foo>
            dojo.byId("container").innerHTML = "Print me!" + x.toXMLString();
        }
    </script>
    <script type="text/javascript">
        dojo.addOnLoad(hello);
    </script>
</head>
<body>
<div id="container">
</div>
</body>
</html>

When I inspect in firebug, it says x doesn't have a toString() method, and my IDE (aptana) thinks that XML is not an object type. Does anyone have any idea what I'm doing wrong?

Prestaul Prestaul · Accepted Answer · 2009-09-03T01:54:38

I'm guessing that it was working all along, but your browser doesn't recognize a "foo" tag and because it does not know how to render it, it ignores it. By putting something inside of your foo tag you would get content out.

BTW: The new XML() statement is entirely unnecessary. You can just do this:

var x = <foo>bar</foo>;

That will create a new XML object for you. Saying new XML() is like saying new String(). You can do it, but it is just a waste of space.

Issues with most basic e4x test

2 Answers