There is a bug in HtmlUnit which prevents re-rendered scripts from being executed. I've reported it at htmlunit mailing list:
http://sourceforge.net/mailarchive/forum.php?thread_name=AANLkTin_tNYEVEKsxGLZ4_AMmpUoaRBHa1A%2B-wap0iqn%40mail.gmail.com&forum_name=htmlunit-user
This is a pain if you have i.e. table with datascroller in second tab of your tab panel that works in ajax mode. To display the table you need to click on a tab, which re-renders part of page with the tabe and script that initializes datascroller. Now, the script doesn't get executed and you may wonder for a long time why clicking on datascroller doesn't trigger another ajax request.
As a temporary workaround call this method after ajax request:
public static void executeAjaxReRenderedScripts(HtmlPage page) {
final DomNodeList<HtmlElement> scripts = page.getElementsByTagName("script");
/**
* We cannot iterate over html DomNodeList cause it depends on sibling relationship which we will modify.
*/
final List<HtmlElement> scriptsList = new ArrayList<HtmlElement>();
for (HtmlElement element : scripts) {
scriptsList.add(element);
}
for (HtmlElement element : scriptsList) {
if (element.getChildNodes().size() > 1) {
element.removeChild(element.getFirstChild());
final DomNode sibling = element.getNextSibling();
final DomNode parentNode = element.getParentNode();
/**
* Script will be executed upon inserting into DOM tree, so we removed and add it again.
*/
if (sibling != null) {
parentNode.removeChild(element);
sibling.insertBefore(element);
} else {
parentNode.removeChild(element);
parentNode.appendChild(element);
}
}
}
}
A visible sign that the script has not beed executed is such output when you call scriptElement.asXml():
<script type="text/javascript">
//<![CDATA[
//
//]]>
</script>
