Get JS Debugging Messages

Mar 4, 2010

I'm finding (like small syntax errors) in my JS/html which are sometimes hard to spot straight away. For example, when coding python on the web, I usually use try: except: and then use the error function to output what went wrong on the webpage.

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Debugging In Opera

Jun 28, 2006

I really want to make my scripts work in Opera. I really, really do.
But it seems like an uphill struggle. First of all, I can't get ANY
kind of debug output. No error messages in the "javascript console" -
but then, I have never seen ANYTHING in Opera's javascript console. Is
there some kind of voodoo I need to perform in order to make that work?

Then, when Opera doesn't like something about a script (even if it works
fine in Spidermonkey), it will sometimes refuse to load it entirely,
which means I can't even do alert() based debugging. What the hell?

Can anyone give me some insight as to how they go about making their
scripts run properly in Opera? I make a point of sticking to ECMAScript
standards (and then making per-browser exceptions where needed *COUGH
IE*), but Opera just doesn't want to cooperate.

This is in Opera 8, by the way. I haven't upgraded yet, since I don't
use it, and I think more people still use 8 than 9 so that's what I want
to target.

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Get IE Debugging Tools?

Mar 5, 2010

Microsoft Script Debugger has been depreciated.

What tools are recommended for debugging JS for IE? I'm only interested in IE7 and 8, but mostly 8.

There are plenty of tools for FF...

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Javascript Debugging How?

Jul 21, 2001

If I write a Javascript and want to debug it, what's the best way to do it. The browser just says, "error in the page!"

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Debugging Javascript

Oct 23, 2006

I have many bit of javascript code that does not work. Becasue I dont have a great heal of experience using javascript, Im not too sure where the code goes wrong.

Is there any good javascript debuggers that I can use that will allow me to go through line by line of that javascript code to see whats going on?

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JavaScript Debugging Tool

Jul 23, 2005

Is there any IDE supporting javascript debugging?

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Debugging Remote JavaScript

Dec 4, 2006

A newly added, not-quite-wanted function of my job is remotely
debugging JavaScript errors on other people's web applications. I have
tried finding a JavaScript debugger that would allow me to do that, but
other the Microsoft Script Debugger, I couldn't find any other.

Are there such programs? Basically, what I'd like to be able to do is
trace commands step by step and view the values of certain variables.

I was unable to figure out how to get Microsoft Script Debugger to
work. I read the documentation and executed it, but I keep getting
"Syntax error" messages whenever I want to see the value of a variable.
Add to that the fact that I am not a developer and I do not know
JavaScript (other than to read it, which is enough for me to figure out
what the problem is) and you see my problem.

I have read about the option of adding message boxes all over the
place, but this would not work out for me either, since I would need to
make changes to this code on the web server, where I don't have access,
and it would be a lot more tedious.

For those skeptical as to why I still expect to be able to debug

The problems are caused in most cases by the proxy we add on their web
servers, and they are due to values being changed on the fly. I only
need to find out where the code breaks and read the values of the
variables, which gives me the solution ("do not change this variable").

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Debugging Simple Script Under Aptana

Sep 15, 2007

First, is this an appropriate NG for talking about debugging
JavaScript in Aptana?

Assuming it is, I'm trying to get a script to read an external text
file and display the text somehow. The script just dies in the file-
read operation, with no symptom. I tried unsuccessfully to get the
Debugger to run the HTML file.

I put up the following on my personal website:

1. The HTML file:
2. Some Aptana settings:

Did any obvious mistakes jump out at you? Do my Aptana settings
suggest a reason why I can get anything happening under the debugger?

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JQuery :: Debugging An Ajax Script?

Dec 23, 2010

I recently changed my commenting system to display comments from newest to oldest (newest first). I also moved my comment form above my comments, like in Youtube.However, I have many JQuery problems when I have 2 or more pages of comments. Here are some of them:

1. If I comment, the last page (oldest) comments are displayed when the comment is submitted.

2. If I "reply" to a comment, the comment form moves below the comments.


function setup_comment_ajax() {
jQuery(".comment-navigation a").livequery("click", function () {
$link = jQuery(this);


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JQuery :: Installing, Using, And Debugging A Plugin (jqPrint)?

Jun 8, 2011

I'm looking for a little help/feedback regarding using a plugin called jqPrint. I haven't used jQuery extensively, and I am new to plugins, so please forgive any novice errors.

First of all, i see on the source page for the plugin [URL].. that it is made for 1.3.x. I assume this does not mean that mean it is incompatible with 1.4.2, which is what my project uses. I have a script with the source code, and I can access a test function. However, I'm running into several problems when trying to to use the primary function of the script.


I'm not quite sure what I'm doing wrong. The script is set up so I can access a test function, but the source function does not work. I would think anyone using the author's script should not need to edit it, but I can't figure out why my project cant' find the jqprint function.

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Debugging & Logging A Server Side Script

Aug 28, 2009

I have a couple of server side scripts that keep troubling me. So far I used Visual Studio to debug them, but for some reason I can't put in breakpoints and stuff ... So debugging like I'm used to is not possible. (I'm developing the sites in dreamweaver) I've tried adding a logging function to a flat textfile, but I've been told traditionally writing to a file is not possible in a server side script... how I can best debug such an application? Is it possible to do so in Visual Studio? Another tool?

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Debugging Mad Libs, Accessing Text From Input Boxes

May 19, 2011

I've been playing around with a madlibs exercise while trying to learn simple javascript. I have three input boxes and a button display an alert containing the input from the boxes.

Am I right to be assigning variable names to the values from the text boxes and then referencing those variables in my alert?

I've been working on it for hours and can't get past this point.

Inset a name:
<input type="text" id="textbox1" size="10"/>
Insert a verb :


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Debugging A Simple Function - Move The Object - A Paragraph Element Node With Id Message - To The Right

Jan 18, 2010

I'm trying to attempt a simple animation, as indicated by the following code. The intention is to move the object (a paragraph element node with id message) to the right by 200 px and down 100 px, by 1 px a second.

However, there seems to be a bug or my methodology is incomplete as the browser returns the Textvalue of the paragraph without any styling.


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Translate JS Messages

Jul 23, 2005

I need to translate the messages of mine scripts, as I can make
professionally this working with the pair php and javascript?

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IE Gives Warning Messages?

Jul 4, 2011

IE browser (even IE8) is giving warning when I open a webpage with JavaScript in it. I can of course close the warning but since I am developing webpages that will be deployed and used by customers, customers will get the warning messages too. How do I design webpage that don't popup ActiveX warning message on customer browser when they open pages with JS in it?

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Alert Messages + Counters

Dec 14, 2005

I was wondering if it was possible to have a variable count down in a
window.confirm dialog box. Like the type of message some systems have
to log users out automatically.

E.g "You will be logged out in x seconds. Do you want to stay logged
in. Yes No"

where the x value would count down and if they didn't press yes then
they would be redirected to another page to log then out.

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Make New Messages Appear At Top Of Chatbox?

Oct 5, 2009

how can I make it hold only X amount of messages then after X amount of messages it just removes the last one.This isn't all the code but I figure it has to be something within this code that I have to change. If you want to look at the source code to go [URL] and take a look there.

//Function for initializating the page.
function startChat() {
//Start Recieving Messages.


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Randomize Script Between A Few Messages

Feb 25, 2006

but i need one to display 1 text massage of, lets say, 5 whole messages, randomized.

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Prompt Box With Mutiple Messages

Aug 31, 2006

I'm trying to make a prompt where if a person types in their username, according to the name it will play a hello message with their name and have their own background.

The script so far looks like this, but I'm trying to make it work.

<script language="JavaScript">
name=prompt("Please Enter Your Name"");
if (name == "Ex1")
document.write("<html><head><title>Welcome " + name + "</title></head><body><EMBED src="sound1.ram"><h1>Hello, " + name + "</body></html>");
if (name == "Ex2")
document.write("<html><head><title>Welcome " + name + "</title></head><body><EMBED src="sound2.ram"><h1>Hello, " + name + "</body></html>");
if (name == "Ex3")
document.write("<html><head><title>Welcome " + name + "</title></head><body><EMBED src="sound2.ram"><h1>Hello, " + name + "</body></html>");

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'Error On Page' Messages - IE Only...

Oct 27, 2010

'Error On Page' messages, IE only.. I need badly to get rid of these error messages. i'm showing my sites to potential employers. When clicking on the ! icon, the so-called 'Details Page' is too cryptic to be of help usually. the line numbers do not correspond to the JS's line numbers (i'm using BBEdit).

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JQuery :: Fade In/out Dynamic Messages?

Jan 21, 2010

I am trying to fadeIn error message received from the server.Here is the code:$("#" + RowID + "> TD:nth-child(4)").append("<err class='error'>" + err.Message + "</err>").fadeIn(1000);But the fadeIn() does not seem to work, it shows the message straight away courseI am missingsomethinghere, probably the append() and fadeIn() do not go hand in hand.

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JQuery :: Disable Error Messages At All?

May 3, 2009

Is it possible to disable showing error messages in jquery.validate plugin at all?

I just need to aply css error class, not to see error messages anywhere.

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Why Messages Shown On Loading Form

Nov 23, 2010

When I have this form loading its loading both messages when I told it to hide it and don't know why. I looked inside the source code of the form and it's not saying the jquery function is involved.

<script type="text/javascript">
$(document).ready(function() {
$('div.message message-error').hide();
$('div.message message-success').hide();
$("input.submit").click(function() {
$('div.message message-error').hide();
var divisionname = $("input#divisionname").val();
if (divisionname == "") {
$("div.message message-error").show();
return false;
} .....

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Understand Messages In The Error Console?

Feb 13, 2011

What can I do to find out what the errors in the error console mean?

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Query :: Pass Messages Between 2 Files?

Jul 30, 2010

I have 2 java Servlet files EmpRecord & Delete. Employee has a button of delete, on clicking will be redirected to Here the record will be deleted. Now, I want to redirect back to where the message "Record deleted" will be displayed. How can I pass the message from to to display the message?

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Closeable Divs For Site Messages?

Feb 20, 2010

Looking to have a div on my page that will give the user some tips or help for that specific page.There should be a "dont show me again button" so the div will dissapear and the user wont see it again..What is the best way to approach this?Ajax calls, cookies, session variables, storing info in mysql?. Im developing in PHPIve heard a lot of different ways but looking for the best way..

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