Firebug Console.log Not Working?
Nov 28, 2009
I have firebug installed in my firefox browser, but I can't get console.log, console.debug or console.trace to work. My console window remains empty despite all my efforts. For example I have some code which throws up an alert box ( alert ('here is an alert') so I know 100% that it is being executed. If I now place the line
console.log("please log this to the console");next to it, nothing gets written to the console. I also have firephp installed and this is logging to the console for my php code absolutely fine
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Mar 5, 2010
I'm trying to output things to the Console to track errors but everytime I try:
console.log(values);
it says "Console is not Defined"
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Nov 30, 2009
Is this a bug or a feature? In this code:
Code:
for (var ur=longestRow; ur>1; ur-- ) // adjust rows above it
{ console.log("going to call spaceRowAbove("+ur+")");
spaceRowAbove(ur);
}
If Firebug is enabled the message is logged and the function is executed.If Firebug is NOT enabled, the function is not executed.If the log statement is commented out, the function IS executed.Wouldn't it be more reasonable for the interpreter to ignore just the console call, rather than the whole loop?Or is it just me and my Firefox 3.5.5?
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Nov 19, 2010
I've come across a strange issue with the console.log function in WebKit.Here is the code I have that is causing the issue:
Code:
var myArray = ['Brian', 'Kayla', 'Mom', 'Dad'];
myArray.shift();
console.log(myArray);[code].....
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Mar 9, 2011
I have been trying to get the feed from this url: [url]
But it keeps returning "data.responseData is null in the firebug console"
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Sep 2, 2011
I have a loop in Javascript, I want to run console.log() in a specific iteration, and then terminate. What is the best method to go about doing this? I'm wanting something like Perl's
die Dumper @foo;
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Nov 16, 2011
How to use javascript's console log and what is the purpose of it ?
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Jan 4, 2012
I'm just getting started with nodejs. For now my purpose with this tech is to finish a book (The Definitive Guide to HTML5) where it's covering ajax and is using node.js to send the code back. I do want to learn the basics while I'm at it.
What I have so far: I understand that node.js lets me write my own web server. I understand that nodejs is actually 'C' and it just allows for us to write JS to make a web server and do other back-end tasks.
I've installed node.js on my windows 7 64 bit machine. I have found out that I can run a script on a node by right clicking it and selecting open with "Evented I/O for V8 Javascript".
What I want to know is how do I run node from the command line? What are the boundaries of the JS file that I write? From what I can tell, I can goo all over the place with my js file traversing my filesystem as I please. If this is true, how is it safe? It seems like it would be easy to hijack some simple js file and go all over the servers file system at will for a hacker....If someone could fill in these holes.
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Jan 29, 2010
Is it possible to read the output of console.log with jQuery?
I need to check for some error, and handle them.
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Feb 13, 2011
What can I do to find out what the errors in the error console mean?
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Mar 16, 2007
I'm using firefox javascript console to find errors within my webpages.
I've found the following errors:
"Expected colour but found '#'. Error in parsing value from property 'color'. Decleration dropped. Line 0"
" Error in parsing value from property 'display'. Decleration dropped. Line 0"
How can i go about finding which lines of code are creating these errors? as it tells me its on line0, this gives me no clue as to where to look.
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Sep 30, 2006
everytime i test my websites in ie (which should be done seperately
from ff) the console shows me the error and the line number.
problem: it shows me the line number of the file of the error's origin,
but it shows me the main html file as file name.
i am developing a bigger project with many js files and often i have to
go through all js files cause i don't know really which file is meant.
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May 17, 2007
I find myself having to dynamically create HTML code, and have found
that the usual way you see to do this is an unreadable mess, like this:
blah('<span id="' + id + '"><a href="' + link + '">' + linkText +
'</a></span>');
So instead, I would like to do something more like the variable
interpolation in Perl and other languages:
blah(XXX('<span id="@id"><a href="@link">@linkText</a></span>'));
The XXX function here would interpolate the values of any variables
named with a @ prefix into the string. Why @? Why not?
So using my favorite JavaScript console (FireBug), I typed the following
and ran it:
x = "hello world";
y = 42;
z = "--@x/@y--"
z = z.replace(/@(w+)/g, function (dummy, v) {
return eval(v);
});
alert(z);
And it works. The alert box shows "--hello world/42--" as expected.
Okay, so now let's turn it into a function:
x = "hello world";
y = 42;
function XXX(s) {
return s.replace(/@(w+)/g, function (dummy, v) {
return eval(v);
});
}
alert(XXX("!!!@x~~~@y!!!"));
And again, it works. The alert box shows "!!!hello world~~~42!!!" as
expected. I should be able now to just drop this *same* code into a
<scriptsection of a web page, right?
Wrong. If I take the *same* code as my second example and plop it in a
web page, the alert does not show the same thing as when in FireBug's
console. It shows the same string passed to XXX, unchanged.
Other experimentation tells me that when placed in a web page, the
anonymous function to do the eval call is never invoked, which suggests
that the regular expression didn't match.
I've only tried this in FireFox 2 and IE 7, but if it doesn't work
properly in either of those, I really don't care about the other browsers.
My guess is there is a difference in the execution environment of
FireBug's console (or likely, any JavaScript console) and the execution
environment of a web page. The questions are what is that difference,
and how do I make my XXX function work properly?
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Feb 23, 2011
I'm trying to append sth. like this:
<script>
$('#text').load('test.html h1'); // loads h1 content out of test.html - works fine
$('#text h1').append('test'); // should append 'test' to h1 - does nothing!
[code]....
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Apr 13, 2005
Firefox has a Javascript Console that has 3 panels besides "All" and "Clear": "Errors", "Warnings", "Message".
Does anyone know a way to log a message in the Message panel with JavaScript? That would really help debugging. I know there's a way involving XPCOM, but that only works with "trusted" scripts, and scripts loaded thru html aren't trusted.
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Jul 17, 2010
I am getting $document.ready(function() not defined in the firebug console. I have seen that in most cases this is caused when the jQuery core is missing or the path is invalid. I do not believe this is the problem in my case becuase firebug shows the code as being loaded successfully and it is readable.
I have the following scripts in my head;
<script type="text/javascript" src="jquery-1.4.2.min.js"></script>
<script type="text/javascript" src="jquery.validate.js"></script>
<script type="text/javascript">
jQuery.validator.addMethod(
"selectNone",
function(value, element) {
if (element.value == "none") {
return false;
}}, .....
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Apr 15, 2001
Any of you know how can I stop an exit console when the visitors lefts my site trough a form button?
The below code is the function that opens the console or popup.
**********************************
<script language="JavaScript">
function exit(){ window.open('XXXXXXX');}
</script>
**********************************
Then on the body tag
************************
<body onUnload="exit()">
************************
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Aug 17, 2009
I'm having a weird problem using ajax. I use ajax to create a input field inside a form.
like this:
Before Ajax script
Code:
After Ajax script
Code:
The Ajax script works perfectly. the problem occurs when I try to send the form with the new field. The form doesn't send the field data to test.php. And more weird is that it works on IE, only on FF the problem occurs. Nothing shows in the Errors Console, and I have the last Firefox version.
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Jul 14, 2010
I am working on a form inside my administration console to upload images with PHP. In my form I have the following:
[Code]...
The onchange submits the form to a seperate PHP file (sent in the action of the form) dedicated to handling the uploading of the images, while the submit button(not shown in code) will submit the rest of the form through ajax. In order to use 1 file field, Ive read that to get an ajax looking effect I need to use an iframe, so I added the IFrame into the HTML and got the effect working right (without actually uploading the files.)
Now I want to limit the ammount of images to 8. Which is where the hidden field came in. So i've got to figure out a way to count the successful uploads, or add them as we go. At which time that number turns to 8, the script will disable the file field from anymore uploads. Problem is I have no clue where I need to go within my php file to make this happen. Here is my php file with javascript added in:
Code:
<?php
// lets go ahead and get this image uploaded
?>
<script language="JavaScript" type="text/javascript">
var parDoc = window.parent.document;
var upldcnt = parDoc.getElementByID('upload_cnt').value;
[Code]....
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Dec 5, 2011
I want to learn how to use firebug, but I can not find tutorials or material. Can someone please let me know, where can I find material for firebug ?
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Nov 28, 2007
what do you use firebug for in connection with javascript?
Just want to explore new ways of using it.
Currently I use it to:
1. debug my scripts using console.log(), etc.
2. test small things in the built in 'live' console
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Apr 22, 2010
I'm rookie when it comes to Ajax and jQuery an..The following url produces an xml-file that I want to use on my page:When I use firebug it seems like nothing comes back. What have I done wrong?
This is what my code looks like:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
[code]....
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Jun 14, 2006
I recently learned about a new Javascript Debugger called FireBug. From what I've heard, it's pretty good. Here's the link: Code:
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May 7, 2011
How is firebug used to test javascript?
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Jul 27, 2011
how I could use firebug to step through massive amounts of javascript that were written by someone else. I'm trying to figure something out for work which has me stumped.
An old co-worker wrote some scripts based on prototype to show input fields on a form when certain options were selected on the previous input fields. I'm trying to duplicate his old code but for some reason it's just not working. I can see that the reason those input fields aren't showing up is because display:none is being added on to the element by the js on the second step after the breakpoint (break on attribute change in firebug). This happens on the working page as well but the working page has about 10 more steps afterwards that eventually remove that style.
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Sep 9, 2010
I founded a error in jQuery, with my code. I can't understand the origin of this error: b is undefined
gb=/,/;R=Array.prototype.slice;var Ia=...=0,e=this.length;f<e;f++){d=b.length;
There is the two files used:
scripts.js
/**
* Lollabot JQuery
* last update: 10/09/2010
[Code].....
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