A Better Alternative To Try Catch Block?

Jul 23, 2005

Is there a more concise way to do something like the the
desired code below?

The gripe is with the try-catch syntax. It takes *way* too
many lines of code to evaluate a conditional expression
when zero or more parts of the conditional expression may
trigger an error. In this case, the trigger is a call to
a non-defined (null) object.

In other words, how can you do a more simple 'try' statement
that simply spits out true or false, depending on whether
the 'tried' code threw an error or not?

Defining a function don't seem to work because you
can't pass the 'try' code as an argument. Extending the
'Global' constructor is not an option, so now what? Code:

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JQuery :: Block UI And Validations / Don't Want To Block Page

Jan 31, 2011

I am new to JQuery. I am using Block UI in my application.In submit button onclick event, i am performing client side validations ( required fied validators )in asp.net.On clicking submit button,whole page is blocked and at the same time validation message is also displayed and page remains blocked. While performing client side validations i don't want to block the page.

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How To Catch The Xpath Of A DOm Element

May 19, 2009

Supposing I have the object reference to an object,how do I retrieve the xpath of a element.

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Catch Click On A Link?

Feb 25, 2010

I'm looking for reminders on how to ...

1. Get all links in a page.

2. Apply an onclick event handler,

3. that cancels the usual link click event

4. and puts the link address into a form element code...

What's behind the question is a screen scraper test I'm doing, whereby I call a website address via a form, and clicking on any page link should put the target address into the form and then submit it. I think I'm on the right tracks - it's just cancelling the original click event I'm not sure about.

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Activex And Catch Insufficient Permision To Run It

Jul 20, 2005

There is two lines from my script:

<script language="javascript1.2">
fso = new ActiveXObject("Scripting.FileSystemObject");
ws = new ActiveXObject("WScript.Network");

Everything working fine, but sometimes some admin change default IE options and during loading the page on screen i can see something like that "Can I run the activex and bla bla bla". This message for my user equal error and I get many phones, Can I catch insufficient permision, or that message and hide it?

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JQuery :: :has Selector Can't Catch A Class?

Feb 11, 2010

$(".mainmenu-topcontainer > ul > li:not(:has('.stateselected'))").hover(function(e){ (...)

I tried it with and without quotes. Do I miss anything? That selector matches all Li elements.

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JQuery :: Catch .keypress() On Body?

Nov 25, 2010

How can you catch the keycode on the body tag?

This is what I have so far:[URL]

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JQuery :: Can't Catch Submit Event

Aug 31, 2009

I wirte a simple sample to alert 'here' when catch submit event. The code as below. When I press submit button , it works fine. But when I press b3 button , it will call a function to submit the form. The form submit is ok , but it will not alert 'here'.

<script type="text/javascript" src="jquery-1.3.2.min.js"></script>
<script type="text/javascript" src="jquery.blockUI.v2.5.js"></script>


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JQuery :: Catch The Property Of CSS Filter?

Jul 7, 2009

the image is like <img style="filter:progid:DXImageTransform.Microsoft.AlphaImageLoader (src='aa.png')" ... > $('img').css('filter') will get progid:DXImageTransform.Microsoft.AlphaImageLoader(src='aa.png') Can I get the aa.png directly?

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How To Catch Return Value From Script In VB Code

Jul 20, 2009

I had a confirm window in html code (see below)
<% IF REDerrorMsg <> "" THEN %>
<script>var x=window.confirm("");document.write(x);</script>
<% end if %>
It displays on page as True/ False when I click 'ok' or Cancel. I need to write code in such a way when 'true' return ' Do Insertion', when cancel 'Abort Insertion'. How to catch the value 'x' in server side code in VB.

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Fail To Catch Exception When Using SetInterval?

Aug 4, 2010

If you try some codes and then catch exception, it should catch the exception when there is. However, if there is a setInterval method in the try clause, then the exception cannot be caughtthe following works ( a usual method is invoked in the try clause):

<script language="javascript" type="text/javascript">
function invoke()
{ var i=0;


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Catch #anchor Link OnLoad?

Aug 31, 2010

What I want is for jQuery to do something when the page has loaded depending on the anchor in the URL.

For example:


Do these come under the onLoad event or something else?

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Cfinput With Date Validation - Catch Changes ?

Jun 12, 2010

I have a cfform with the following (partial) structure:


I'm written a simple script that sees if the user has entered a start date in the StartDate field, and automatically populates the EndDate field with that value:


This script works just fine when entering values directly into the input field. However, it does NOT work when using the Calendar popup that ColdFusion helpfully adds when using date validation. When you click on the calendar icon to the right of the input field, a calendar popup appears; once you click on a date, the date is entered into the field. Unfortunately, JavaScript does not recognize that anything has happened.

This is problematic because the date popup is the easiest way to enter a valid date, and the one that I automatically use, and which I assume that other users will gravitate to as well.

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Catch Page Anchor Without Onload?

Dec 27, 2010

how would I go about capturing the page anchor in the address bar without the onload function and without page refresh?

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Way To Catch A Dialog Open Event?

Sep 12, 2011

Ok I'm returning a csv from a servlet, and I want to initiate a wait cursor that is to close when the open dialog is displayed in the window. I have searched but haven't found anything related to the opening of a dialog.

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JS Function To Catch Up Reload Button?

Oct 10, 2010

How can i write JS function to catch up Reload Button (on browser) then i pressed on.

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Catch Invalid Document.domain Set ?

Mar 23, 2010

I do my development on a local PC before putting the code onto a website.

Something I need to do is set the document.domain to the top level domain for a page. The top level domain will be supplied via config item.

The small issue is that my top level domain when developing is "mypc" and attempting to set document.domain to "mypc" kills the javascript.

I tried this as a work around:


But this still triggers a complete failure of javascript on the page. I also tried using eval to do it, but it still kills things.

It there another trick to try setting the domain without dieing that doesn't involve validating the domain string before attempting to set it?

[Edit] I am aware that it's dieing because "mypc" is clearly not a FQDN as it expects.

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How To Catch Whole Line Or Recognize Whitespace Sign In PDF

Dec 21, 2005

How to catch whole line in the PDF document using javascript?
or How to recognize/catch whitespace signs (e.g. "
" ) in PDF document

Which method I should use?
Or any other possibility are ?

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JQuery :: Catch Users Input With Html()?

Aug 23, 2010

When you try to select some HTML modified by the user like an input, it returns the original html.

Example : <input type="text" value="" name="test" />

If the user write "something" in the textbox and then echo the html, the input value will still be null. (At least in firefox)

Is there a way to catch these inputs as well ?

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JQuery :: Want To Catch Any Request Sent By App And Display An Alert?

Aug 18, 2009

I basically want to catch any ajax request sent by my app and display an alert.I have tried this to no avail:

<b><font size="1"><span style="font-family: courier new,monospace;">jQuery("*").ajaxSend(function(event,request, settings){</span><br style="font-family: courier new,monospace;">


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JQuery :: Catch Errors From External Libraries?

May 7, 2009

This is slightly off topic, but if anybody can solve this, it'll be this mailing list.  The basic question is:  Is there a way to catch an error thrown in an external js library so that I can continue parsing the remaining javascript on the page? The more detailed version is this:  I'm using DotNetNuke (DNN) for  my website.  A module that I'm using include Scriptaculous, DotNetNuke uses a mixture of jQuery and MS AJAX.  To avoid namespace pollution, the DNN folk have used the jQuery prefix for jQuery functions and the $ shortcut for MS AJAX (actually, I think this is the only way you can do this).  The third party module uses $ to reference Scriptaculous.  I think we all know where this is going:  the namespace pollution of $ causes an error to be thrown very early on, leaving parts of my page unstyled (cornerz), dates unformatted, etc, etc, etc.  The good news - for me - is this only happens when an admin is logged in. My thought would be to catch the errors and continue parsing <i>my </i>portion of the page.

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Create A Link To Another Page - But With A Slight Catch

Dec 2, 2009

I would like to create a link from one page to another. Easy - I know. But I would like that link to to take me to a certain part of the other page, specifically towards the bottom of the page.

Is that possible to do? And if so, what are the different ways I can specify where in the page to go? (i.e. what are the parameters that I can play with)

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How To Catch Mouse Wheel On Click Event?

Dec 20, 2007

<a href="http://www.google.com" onclick="alert('test alert')">test</a>

isn't work if user clicks on it in firefox to open it in another tab, actually it isn't work in IE and Opera either, how I can cath this wheel button click and hanle it???

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Try-catch Error Handling -- Display Line Number?

Jul 20, 2005

I need help finding where an error is occuring in my code. I use a
try-catch block like this in my global.asa:

} catch (e) {
Application('errormsg') = ("An exception occurred in the script. Error
name: " + e.name
+ ". Error description: " + e.description
+ ". Error number: " + e.number
+ ". Error message: " + e.message); }

And this is what is SOMETIMES returned when I display
Application('errormsg'), the rest of the time, it works:

An exception occurred in the script. Error name: Error. Error description:
Path not found. Error number: -2146828212. Error message: Path not found

But I don't know which path is not found! (I'm using the filesystem object
and importing data from a file into SQL.) Is there a way to display the
line number of the error or more details? Or do I just have to try to catch
the error by going through each bit of code?

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JQuery :: Catch The Value Of <select> When A User Selects An Option?

Aug 15, 2011

how can i cath a html <select> event? i have a <select> list... i want to catch the value of <select> when a user selects an option..

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JQuery :: Load Some Files Via Ajax - Catch 404 Errors

Apr 20, 2009

I'm trying to load some javascript files via ajax, I can't get it to catch 404 errors. I've tried searching, but everything I've found says that I should check the status on the request object to catch it but it's not even getting that far.

I've tried:

I would try $.getScript, but that appears to have no way of handling errors. I've even tried just doing a console.info("test") -- it doesn't even do that. Firebug shows a 404 error (obviously) but the error doesn't seem to be being caught? I'm loading jquery through the google api, version 1.3.2.

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