Slightly Advanced Exception Handling?

Aug 12, 2010

I'm trying to develop proper exception handling for a javascript framework I'm developing but I keep hitting an annoying dead end: caller and line numbers / stack trace.I have a basic exception class:


* Exception.js
* @classException


The problem is that the console.trace() function returns only one line: "log", referring to ExceptionHandler.log(e) (at least in webkit). What I'd love to do is have the Exception class get information as to (at the very least) what called it and also, although perhaps less viable, the line number it was called on. I don't think the line number is going to work though. I would _like_ this to happen automatically, but if I have to include another argument called_from it won't be the end of the world. I know about arguments.caller but this is depreciated (as of ECMAScript 1.3 (?)).

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JQuery :: Internals And Exception Handling?

Aug 19, 2009

Couple questions for the jQuery internals-aware folks. This is a bit long, sorry for that. I'm working on beefing up error handling in a web application. I want to ensure that I'm catching all exceptions and handling them via my own UI system. The window.onerror function is part of the solution,


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The exception is as follows (from the custom WebKit frame where my script runs):

This occurs on line 3255 of jquery-dev-1.7.1.js, which reads:

I did some poking around and found that handleObj.origType is "keydown". There is no jQuery.event.special["keydown"] defined, meaning that the first part of the expression evaluates to undefined (there is no such thing as {}.handle). The second part of the expression, handleObj.handler, evaluates to true. The entire expression therefore evaluates to true, which can't be applied as a function.

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Sep 23, 2009

I am needing some help with an error I'm getting from a project I'm working on. First off let me preface this all with the fact that I'm a total javascript noob. I'm really trying to understand what I'm doing wrong. So any help or advice is MORE than welcome. Here's what is happening. I found this code that will duplicate a row in a table and modifiy the name of a input in the row. Well for my purposes I have two different tables I need to work with. (each one idividually) So I changed the code a bit to make it accecpt a variable to use for the table name. (before it was static) and now I'm getting a error. Error: uncaught exception: [Exception... "Component returned failure code: 0x80004003 (NS_ERROR_INVALID_POINTER)" nsresult: "0x80004003 (NS_ERROR_INVALID_POINTER)" location: "JS frame :: :: addRow :: line 14" data: no] This is the old code that would work (only for one of the tables)


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In my code (ASP.NET MVC using Nhibernate) , I do this :


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Feb 4, 2011

I have developed my own fake language like pig latin but ever so slightly different, I want to make a translator for it as there are so many for pig latin,english-my language:

1: put the first letter at the end (hello becomes elloh)
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I'm using the newest version of jQuery


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i think that ie is calculating the size onresize incorrectly. heres the site, take a look at the the script file:[URL]..

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I've been trying to find a jQuery that will have buttons float from left to right onto a page, then grow a little / shrink back to normal size on mouseover.

I've found lots of things that are predominantly for drop down menus - that's not really it.

Using my (limited) javascript skills I've modified a script that moves buttons or divs onto a page but it looks very dull. Powerpoint-like even.

Here's a link: [URL]

All the buttons need to do is jump to another page - the background image does not need to change at all / slide out or anything like that.

So basically what I'm looking for is a pointer to a jQuery thingy [!] that will do the above while looking a lot snazzier

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but it is not fooled! It seems I need to edit location.href but I don't know how to do it!!

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When this link is clicked, I want the content to load in the main
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Source code below:

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Dec 8, 2002

Advanced Form Validation Example (

Part I of 3

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<title>Advanced Form Validation Script v6.2: Commented</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">

<!-- Start Javascript -->
<script language="JavaScript">
<!-- Hide Me

Advanced Form Validation Script v6.2
(C) 2000, 2001 Phoenix Now Inc.

Reproduction of this script is Prohibited
Unless this comment remains

Visit us Online at:

Contact Us at:

### NOTE ###
BEFORE you start to RIP this script appart, make a copy of it.

I have Commented the Areas you can change
and how to change them correctly. The following
denotes the special comment area of information.

## Special Comment Area ##

Set the title of your page, to what you want to be seen in the email.
The document title is used for the email title, and the subThanks window

// Focus the first form element
function focusIt() {

// Redirect the user to a thank you page
function redirectIt() {
window.document.location.replace("thanks.htm"); // ## Change the page name and or location to your thank you page. ##

// Reload the current page.
function reloadIt() {

// Build Thank you window based on form elements.
function subThanks() {
The subThanks page displays information to the sender about what has been sent.
This page also gives them a chance to print a hard copy for there records.
If you wish to change any of the format of this window, becareful, table information is
set in three areas. The first area is in the Variables below, col, cot, coz and brk.
The second area is in the newWin.document.write lines. this area is the top portion of the new
window. It displays a thank you, displays ths user email, the form name, last name and first name,
as well as the top print button. The third and final area, is what is used to generate the rest
of the table. You should not have to touch any of this, as all the cell formatting is done in the
top Variables.

If you change the name value of your First Name, Last Name and Email address, make sure to update
this information here in section two as well. reqRequestor_First_Name, reqRequestor_Last_Name
reqRequestor_Email are all called in the second section.
var bg = 0;
var daHeight = screen.height / 2;
var daWidth = screen.width / 2;
var topPos = 0;
var leftPos = 0;
if (screen) {
topPos = daHeight-200;
leftPos = daWidth-250;
var form = window.document.forms[0];
var doct = window.document.title.toString();
var now = new Date();
newWin ='','thanks','scrollbars=1,width=570,height=450,left='+leftPos+',top='+topPos+'');
newWin.document.writeln("<html><head><title>" + doct + "</title><link rel='STYLESHEET' type='text/css' href='main.css'></head><body bgcolor='#ffffff' text='#000000'>");
newWin.document.writeln("<h1>Thank You!</h1>");
newWin.document.writeln(form.reqRequestor_First_Name.value + " " + form.reqRequestor_Last_Name.value + ", thank you for completing the " + doct + "<p>");
newWin.document.writeln("A Copy of the results below have been emailed to you at <a href='mailto:" + form.reqRequestor_Email.value + "'?subject='" + doct + "' class='mroller' title='Your Email Address'>" + form.reqRequestor_Email.value + "</a>. We sugguest that you print a copy for your records as well." + "<p>");
newWin.document.writeln("<form class='forma'><input type='button' name='print' class='forma' value='Print Doc' title='Print Document' onClick='window.print()'><p>");
newWin.document.writeln("<table width=' cellpadding=&#391;' cellspacing=&#393;' border=&#390;' title='Form Information'>");
newWin.document.writeln("<tr><td colspan=&#392;' bgcolor='#bebebe' class='copy'>" + doct + " Submitted on " + now.toLocaleString() + "</td></tr>");
The below section is the third section for generating the subThanks window.
This section loops over the entire form, and then writes the information to
the new subThanks window. There are some rules to what is shown and what is
not shown in the subThanks window. Everything else is printed to the new window
accept the following.

1. Checkboxes and Radio buttons that are not checked
2. Button Types
3. Hidden fields
4. hidden form objects whos name ='s "=================================================="
This is used for a break, when the loop finds an element with the above equal signs, the
Variable brk is written which is equal to "<tr><td colspan=2 bgcolor=#e6e6e6>&nbsp;</td></tr>";
This break is definded above at line 89
5. The Table is closed when the loop hits a submit or reset button.

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<script type="text/javascript">

Rollblend: Rollover + Blending script
Free use of this script is allowed as long as
this message remains intact.

if (document.all)
{document.onmouseover = rlvr;
document.onmouseout = rlvr;}

function rlvr()
if (e.osrc)
if (e.fx){e.filters[0].apply();e.filters[0].play();


<img src="Btn.jpg" osrc="Btn_ovr.jpg" fx=true style="filter:blendTrans(duration=1)"><br>

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[MENU] <-after click
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| (x) Selection three |
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Nov 10, 2011

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I am trying to load multiple google maps with advanced directions on one page. I can't seem to get it to work. Any way to run the same multiple times on one page? Here is the code below. The first map and set of directions works, but not the second.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "[URL]">
<html xmlns="[URL]" xmlns:v="urn:schemas-microsoft-com:vml">
<meta http-equiv="content-type" content="text/html; charset=utf-8"/>
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<script src=" [URL] "
<style type="text/css">
body {
font-family: Verdana, Arial, sans serif;
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margin: 2px;
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Works in all browser with DIV, CSS and JavaScript support: IE5+,
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I would like to animate a number of thumbnails in a gallery. My idea is to have each thumb transit to another thumb, i.e. you put your mouse over a thumbnail, and it slowly fades to a different image. I have spent a lot of time trying to get this to work, using exhaustive combinations of fadeToggle() and stop(false, false) etc etc and I still can't get a smooth effect.

I have created my own fade engine using a variable that drives the opacity of the image that fades in/out over the other image. My issue is that I would like to get this into a function, as it works beautifully for one image, or if you simply duplicate the code for other thumbnails. The problem is there could be up to 32 thumbnails on the page, which means a lot of repeated code.


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