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Webmaster Forum / HTML, CSS, Scripts / JavaScript / October 2007'undefined' is null or not an object javascript
Hello I have the above javascript error on filling in mandatory fields and submitting the form below: http://www.wildwoodbushcraft.com/voucherformtest.htm?course_name=Bushcraft+Weeke nd+course&price_code=SWC This error only occurs in IE not firefox and I can't see anything wrong with the functioning of the form. I have been tearing my hair out on this one and would be very gratefulf for any help. All the best Redge P.S. Please reply to this group rather than by email - thanks. > I have the above javascript error on filling in mandatory fields and > submitting the form below: > > http://www.wildwoodbushcraft.com/voucherformtest.htm?course_name=Bushcraft+Weeke nd+course&price_code=SWC > > This error only occurs in IE not firefox An error occurs in Firefox (2.0.0.8). Select the Tools menu, Error Console item (or whatever debugging tool you employ -- to http://getfirebug.com/ is strongly recommended.) > P.S. Please reply to this group rather than by email - thanks. The opposite would be abnormal and generally unwished for in Usenet, so there is not really a need for asking for it in an OP. (Nevertheless, there must be an address in the From header, meaning it designates a container that receives e-mail; see RFC1036 and RFC2822.) PointedEars  Signaturerealism: HTML 4.01 Strict evangelism: XHTML 1.0 Strict madness: XHTML 1.1 as application/xhtml+xml -- Bjoern Hoehrmann Apologies - I forgot to upload one file at the time I posted so the error response was not as described - it is now - please try it again and see if you can help me out - many thanks. Regards Redge. > Apologies - I forgot to upload one file at the time I posted so the > error response was not as described - it is now - please try it again > and see if you can help me out - many thanks. Same error (uncached): urchinTracker is not defined http://www.wildwoodbushcraft.com/voucherformtest.htm?course_name=Bushcraft+Weeke nd+course&price_code=SWC Line: 248 Code: urchinTracker(); Since `urchinTracker' appears to be a method, that would be the explanation why IE shows the unhelpful "undefined is null or not an object" error message: `undefined' cannot be called. ISTM it is your using Google Analytics at the end of the `body' element (and possibly also your serving invalid markup -- <http://validator.w3.org/>) that causes the problem. Incidentally, Google's client-side script code is recognized here to have been written by in[ae]pt people. PointedEars SignaturePrototype.js was written by people who don't know javascript for people who don't know javascript. People who don't know javascript are not the best source of advice on designing systems that use javascript. -- Richard Cornford, cljs, <f806at$ail$1$8300dec7@news.demon.co.uk> Thanks for your advice Thomas... > ISTM it is your using Google Analytics at the end of the `body' element (and > possibly also your serving invalid markup -- <http://validator.w3.org/>) > that causes the problem. Actually I have placed the Analytics tag exactly where Google say to put it and the validator code seems strict xhtml and I am not sure why it would create this error as other pages with transitional or loose syntax and also Analytics tags in the same place do not give the error... perhaps I am missing something here but I am still not sure how to progress. regards Redge [Quoting repaired] > [Thomas 'PointedEars' Lahn wrote:] >> ISTM it is your using Google Analytics at the end of the `body' element (and [quoted text clipped - 3 lines] > Actually I have placed the Analytics tag exactly where Google say to > put it You misunderstood me. I did _not_ mean to say that the position of the "Analytics tag", which is rather a `script' element containing a call to Google Analytics code, was wrong. Mentioning the position was merely a way to point you directly to the line where the problem appears to occur. > and the validator code seems strict xhtml Parse error. *Your* code is _not_ valid. http://validator.w3.org/check?verbose=1&ss=1&uri=http%3A%2F%2Fwww.wildwoodbushcr aft.com%2Fvoucherformtest.htm%3Fcourse_name%3DBushcraft%2BWeekend%2Bcourse%26pri ce_code%3DSWC shows 12 errors, and that is assuming HTML 4.01 Transitional because you omitted the required DOCTYPE declaration in your code. > and I am not sure why it would create this error as other pages with > transitional or loose syntax and also Analytics tags in the same place > do not give the error... Would that not be an indication that Google Analytics, at least the way you used it, does not work with XHTML? > perhaps I am missing something here but I am still not sure how to progress. Use Valid HTML 4.01, preferably Strict. Please take heed on the FAQ on how to quote properly: http://www.jibbering.com/faq/faq_notes/clj_posts.html#ps1Post PointedEars Signature"Use any version of Microsoft Frontpage to create your site. (This won't prevent people from viewing your source, but no one will want to steal it.)" -- from <http://www.vortex-webdesign.com/help/hidesource.htm> I have now updated the page to conform to valid html 4.0 Transitional but the error still persists. wrote on 25 okt 2007 in comp.lang.javascript: > I have now updated the page to conform to valid html 4.0 Transitional > but the error still persists. What error? [please always quote on usenet, this is not email] SignatureEvertjan. The Netherlands. (Please change the x'es to dots in my emailaddress) > wrote on 25 okt 2007 in comp.lang.javascript: > [quoted text clipped - 9 lines] > The Netherlands. > (Please change the x'es to dots in my emailaddress) Sorry, I was talking about the original error "'undefined' is null or not an object". I have taken earlier advice which suggested that the Javascript for my Google analytics combined with invalid mark up may have been causing the error but although it may relate to another error on validating the page and even removing the Analytics javascript the "'undefined' is null or not an object" error still persists. I am not surprised since other pages with the same invalid markup and Analytics tags do not produce the error. On Oct 26, 5:52 am, red...@hotmail.com wrote: > > wrote on 25 okt 2007 in comp.lang.javascript: > [quoted text clipped - 18 lines] > persists. I am not surprised since other pages with the same invalid > markup and Analytics tags do not produce the error. Here are some problems: var pfname, cemail, psurname, p_email, vvouchertype, vcoursedate, vvoucher_email; with(window.document.msgform) { pfname = purchaser_firstname; cemail = purchaser_email; psurname = purchaser_surname; pemail = purchaser_email; vvouchertype = voucher_type; vcoursedate = course_date; vvoucher_email = voucher_email; } There are so many things wrong with this, it is hard to know where to begin. First, don't use a with clause unless you know exactly what you are doing and have a good reason for doing it (it isn't needed here.) Second, pemail is undeclared. Third, read the FAQ section about form element access. The exception occurs in your trim function. At some point you pass it an undefined variable. > Sorry, I was talking about the original error "'undefined' is null or > not an object". I have taken earlier advice which suggested that the [quoted text clipped - 4 lines] > persists. I am not surprised since other pages with the same invalid > markup and Analytics tags do not produce the error. Looks like vvouchertype.value to me. http://www.jibbering.com/faq/faq_notes/form_access.html#faBut shows you how to retrieve radio button values. Since the value of the checked item is in the HTML, it's a puzzle as to why you should be trying to trim it in any case. I agree with David on the code quality: it's not a very obscure bug and it's a worry that it takes so long to pinpoint it. > red...@hotmail.com wrote: > [quoted text clipped - 17 lines] > I agree with David on the code quality: it's not a very obscure bug and > it's a worry that it takes so long to pinpoint it. Many thanks and also to David for your constructive comments - that has solved the problem. >> [please always quote on usenet, this is not email] JFTR: Quoting is useful with e-mail, too. PointedEars |
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