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RE: Re: "Form" is not a constructor

by Ben Kyrlach :: Rate this Message:

I've also experienced this problem before. Unfortunantly, I was unable to isolate the problematic code from the application under test. If you're using "prototype.js" (a standard javascript library it seems) I've found that a simple modification to that JS file solved my problem.

I havn't been able to fully investigate the problem, but it does seem to have something to do with class prototyping in JavaScript confusing HTMLUnit. Unfortunantly, I think Marc was having a bad day that day, and I didn't get much help here. If you want to see where exactly I modified the file, I'll be happy to show you.

Thanks,

Ben Kyrlach -- Operations Intern.

-----Original Message-----
From: htmlunit-user-admin@...
[mailto:htmlunit-user-admin@...]On Behalf Of Marc
Guillemot
Sent: Monday, December 12, 2005 5:10 AM
To: htmlunit-user@...
Subject: [Htmlunit-user] Re: "Form" is not a constructor

Hi Thomas,

is

currentForm = document.getElementById("formName");

really the code at line 105 in your js file?

Can you try to produce a minimal html/js reproducing the problem?

Marc.

Thomas Robbs wrote:

> I’ve recently come across a problem when the JavaScriptEngine.execute(…)
> method executes the following line of JavaScript:
>
>
>
> currentForm = document.getElementById("formName");
>
>
>
> … where “formName” is the id of a form on the page.
>
>
>
> The exception that is thrown is:
>
>
>
> org.mozilla.javascript.WrappedException: Wrapped
> com.gargoylesoftware.htmlunit.ScriptException: "Form" is not a
> constructor. (/javascript file name/#105) (/javascript file name/ #105)
>
>
>
> I’m using the following BrowserVersion:
>
>
>
> public static final BrowserVersion IE_6_0_SP2_on_WINXP_SP2 = new
> BrowserVersion(
>
> BrowserVersion.INTERNET_EXPLORER, "4.0 (compatible; MSIE 6.0;
> Windows NT 5.1; SV1; .NET CLR 1.1.4322)",
>
> "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET
> CLR 1.1.4322)", "1.2", 6 );
>
>
>
> I’ve walked through the functionality using the real browser that the
> above BrowserVersion represents as well as FireFox 1.0.7 and I’m not
> seeing any JavaScript errors on the page when it loads.
>
>
>
> I’m also using a build of HtmlUnit 1.7 from 2005-12-05.
>
>
>
> Any ideas as to what would cause this Exception?
>
>
>
> Thanks in advance,
>
>
>
> Tom
>
>
>
>
>

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