Javascript: object expected on line 1 char 2 - javascript

http://pastie.org/856698
Anyone have any idea why the script is causing this error?

Check your jQuery file to see if you don't have extra characters in there. That is the first referenced script and your error doesn't give a file.
UPDATE:
I'm not getting any errors on your site in IE8 until I press submit. Then it tells me regSubmit() is not an object, and indeed it isn't, your function is called submitReg(). Perhaps the reason you are getting errors "in IE" is simply because without a debugger loaded, non-IE browsers tend to just skip errors, whereas IE stops processing and puts up a notification.
Try installing Firebug or using Chrome, CTRL+SHIFT+J and watch and see if you get errors there now (you will if you watch the console, but processing will continue anyway).

Related

onmozfullscreenchange warning in Firefox (not using react)

I keep getting this error in Firefox console.
onmozfullscreenchange is deprecated. editresume.js:411:4
onmozfullscreenerror is deprecated. editresume.js:411:4
Ignoring get or set of property that has [LenientThis] because the “this” object is incorrect.
If I go to my code file, for that line number, this is what I have
tempbutton.setAttributeNode(attid);
and, I am not using onmozfullscreenchange or onmozfullscreenerror anywhere.
Why am I getting this? It is also triggers a debugger exception for some reason, at that line number.
Note : I dont get a similar error/warning/breakpoint trigger on Chrome. So, its Firefox only.
Firefox version - 70.0
Chrome version - 77.0.X
This message may appear when logging the window or document objects and extending the resulting message in the Console.
It's because these getters are configured to warn about this deprecation so that developers can update their code accordingly.
However, this deprecation notice doesn't look at what tried to get it, so when the Console itself tries to get the value of these properties, it will also trigger the warning notification.
But your debugger exception certainly comes from somewhere else.

Did this JavaScript break the console?

Just doing some JavaScript stuff in google chrome (don't want to try in other browsers for now, in case this is really doing real damage) and I'm not sure why this seemed to break my console.
>var x = "http://www.foo.bar/q?name=%%this%%";
<undefined
>x
After x (and enter) the console stops working... I restarted chrome and now when I do a simple
console.clear();
It's giving me
Console was cleared
And not clearing the console. Now in my scripts console.log's do not register and I'm wondering what is going on. 99% sure it has to do with the double percent signs (%%).
Anyone know what I did wrong or better yet, how to fix the console?
A bug report for this issue has been filed here.
Edit: Feeling pretty dumb, but I had Preserve log checked... That's why the console wasn't clearing.
As discussed in the comments, there are actually many different ways of constructing a string that causes this issue, and it is not necessary for there to be two percent signs in most cases.
http://example.com/%
http://%%%
http://ab%
http://%ab
http://%zz
However, it's not just the presence of a percent sign that breaks the Chrome console, as when we enter the following well-formed URL, the console continues to work properly and produces a clickable link.
http://ab%20cd
Additionally, the strings http://%, and http://%% will also print properly, since Chrome will not auto-link a URL-link string unless the http:// is followed by at least 3 characters.
From here I hypothesized that the issue must be in the process of linking a URL string in the console, likely in the process of decoding a malformed URL. I remembered that the JavaScript function decodeURI will throw an exception if given a malformed URL, and since Chrome's developer tools are largely written in JavaScript, could this be the issue that is evidently crashing the developer console?
To test this theory, I ran Chrome by the command link, to see if any errors were being logged.
Indeed, the same error you would see if you ran decodeURI on a malformed URL (i.e. decodeURI('http://example.com/%')) was being printed to the console:
[4810:1287:0107/164725:ERROR:CONSOLE(683)] "Uncaught URIError: URI malformed", source: chrome-devtools://devtools/bundled/devtools.js (683)
So, I opened the URL chrome-devtools://devtools/bundled/devtools.js in Chrome, and on line 683, I found the following.
{var parsedURL=new WebInspector.ParsedURL(decodeURI(url));var origin;var folderPath;var name;if(parsedURL.isValid){origin=parsedURL.scheme+"://"+parsedURL.host;if(parsedURL.port)
As we can see, decodeURI(url) is being called on the URL without any error checking, thus throwing the exception and crashing the developer console.
A real fix for this issue will come from adding error handling to the Chrome console code, but in the meantime, one way to avoid the issue would be to wrap the string in a complex data type like an array to prevent parsing when logging.
var x = "http://example.com/%";
console.log([x]);
Thankfully, the broken console issue does not persist once the tab is closed, and will not affect other tabs.
Update:
Apparently, the issue can persist across tabs and restarts if Preserve Log is checked. Uncheck this if you are having this issue.
Update 2:
As of Chrome 40, this issue is fixed.

Can't execute code from a freed script - IE6 IE7 IE8 IE9

I ran into this problem today in IE6 (but is reproducible on all recent version of IE).
I noticed quite a few people run into this problem and I haven't seen a very practical way to fix this.
There seems to be some other solution floating about regarding the order of script tags and meta tags in the head of the HTML document. I haven't confirm this but here's a link anyway:
What causes the error "Can't execute code from a freed script"
I also know the solution to this problem so I'm posting it below
First of all you need to locate the source of the message.
IE is known for it's abysmal error reporting but luckily IE9 seems somewhat capable. If this bug occurs in IE6, IE7 or IE8 it will also occur in IE9, so use IE9 to debug (for your sanity)
Open the webdeveloper console in IE9 (press F12) and run through the steps to produce this error.
IE9 should now give you a file and line indication on the console, yay!
What typically goes wrong is a callback that is executed after some delay, either by setTimeout or because of an Ajax request. If the window, document or frame the callback is defined in got unloaded then you will get this message when it tries to execute your callback function.
Seemingly other browsers ignore this problem, which is fine I guess. To make IE do the same just wrap the callback in a try-catch block (I don't know what the callback would evaluate to, I don't think it evaluates to undefined). If you want have more precise error handling or if you actually want to take action when this occurs you can probably do so and please make a post here because I'm curious as to what kind of use case would actually require this.
If you have page that uses several Frames, this error might be caused by objects initialized in one frame being used in some other frame after the initial frame was removed from the page.
When that happens, then depending on situation, you might want to:
Review your code looking for potential memory leaks
If those object represent some data you do actually want passed between frames, then consider using their stringified form instead.
The solution - be sure to place all META statements BEFORE any script statements.

Ajax problem using MooTools/jQuery - p.onStatusChange is not a function

I get the following error in firebug in Firefox 3 with both MooTools and jQuery:
"p.onStatusChange is not a function".
I've noticed this error frequently in firebug since one of the latest updates of FF3. However, it has started appearing with code that hasn't been changed in some time and that was not reporting errors previously. The errors happens when ajax results are returned. It shows up in different applications that use separate javascript libraries, MooTools and jQuery.
Does anyone have any idea why these errors are appearing? My intuition tells me that it is something in Firefox that changed, but I can't find any information online currently. The ajax calls still work fine, but I am wary of just going with my intuition and leaving script errors in my code.
Thanks,
Jason
I get it in tabBrowser instead:
chrome://browser/content/tabbrowser.xml
(4) errors occur:
p.onStatusChange
p.onProgressChange
p.onStateChange
p.onSecurityChange
What I found was that the add-on "PDF Download" was causing these errors. The best way for me to check was to go to a page that produced the errors, turn off all the add-ons, and turn them on one-by-one (starting with Firebug). Instead of going one-by-one, I actually turned them on in lots of 3 to help identify the problem sooner.
Here is the reference for the function NsIDownloadProgressListener. It looks like it has been deprecated.

on a javascript error, how to identify method or js file with the problem?

When a javascript error occures in IE (or in other browsers) you get a popup saying that javascript error has occurred - usually this comes with a line number and some hint.
Sometimes it comes with line 0 and with no way of knowing what the problem is.
Javscript can come from HTML itself, from a js file or from JSP (and more).
Microsoft has a script debugger that helps a lot in finding where js errors are, however sometimes when a js error occurs the script debugger cannot find the code portion and thus its difficult of finding where is the root cause of the problem.
My question is whether anyone knows any way of making script debugger find the code any way (mostly happen with js code that is in JSP file), or at least include in the IE popup the method or js file where the error has occurred. (it only display the line number, and many times its line 0...).
Thanks,
Tal.
The error object which is created when an error is thrown by JavaScript is very unreliable when it comes to the source line, especially within IE. Browsers like Firefox and Safari are better at line numbers, but they are generally pointless due to minification of the files.
What is obviously of more use is getting the call stack, but due to the anonymous nature of JavaScript functions (well, that they can be anonymous) a call stack can often be hard to work out.
If you're doing a try/ catch you can do arguments.callee which will return you the method which called the current method which failed.
Here's a good example of doing a complete stack in JavaScript - http://eriwen.com/javascript/js-stack-trace/
Also developer tools included with Internet Explorer 8 is something good to trace and debug your javascript code
There is a version of Firebug called Firebug Lite that will work with Internet Explorer. It's performance is going to be based on how complex your pages are; however, for relatively lightweight pages, it should provide some insight.
I recommend this tool rather than simply using Firebug and Firefox because not all errors that occur in Internet Explorer will occur in Firefox, and so performing any debugging in that browser may not yield any results.
Firebug on Firefox is usually considered one of the best debugging tools.
On Firefox, go to
http://getfirebug.com
to get it.
This will print you a stack trace:
function Stack()
{
try
{
throw Error()
}
catch(ex)
{
return ex.stack
}
};
print( Stack() );
If all else fails (and when dealing with IE it sometimes does) you can always walk through your code with alerts. It's crude and tedious, but sometimes it's all you can do:
Simply:
var count = 0;
then sprinkle some:
alert(count++);
at strategic lines along your code and note where it stops alerting.
Lather rinse repeat until you have your line.
If using Firefox you can press Ctrl + Shift + J to bring up the JavaScript error console that is built into Firefox, which will tell you exactly what went wrong.

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