Error Handling – Display Function Name
Dec 13, 2007
I am trying to code a reusable error handling function for my JavaScript objects. I thought is would be possible to display the name of the function. So this way, when an error occurs, I can display the error along with the name of the function the error occurred in. Is it possible to display the name of the function from within the function?
These examples do not work but I did try them.
<html>
<head>
<script language="JavaScript">
function display()
{
alert( this.toString() );
alert( this.name );
alert( this );
}
</script>
</head>
<body>
<a href="javascript: display();">Display</a>
</body>
</html>
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Sep 17, 2009
I'm not an expert with javascript nor am I too familiar with the syntax. What I'm trying to do is store all errors into an array like so:
Code JavaScript:
var errors = new Array();
var example = '';
if (example == '') {
errors[] = 'This example field is empty';
}
What I'm trying to do at the end is display the array if its not empty into a DIV called errors (or something). I know how to do this in PHP but I'm trying to do first validation layer through javascript. So something like this:
Code JavaScript:
<div class="errors">
if (errors != '') {//If the array is not empty
for (keyvar in errors) {
document.write(array[keyvar]);//Display Errors
}
}
</div>
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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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Feb 26, 2006
I am trying to fix error- object does not exist- I want it possible to
allow object not to exist.
I am writing a script on a page that may or may not include a login
form. For example-after a visitor logs in, the login form is no longer
on the page, but other content is still there.
I want to bring focus to the login form using the onLoad in the body
tag.....but if the login form does not exist, I do not want to perform
this function.
The following code works fine for focusing the cursor on to the login
form.
(code)
<html>
<head>
<title>
Testing Javascript
</title>
<script type="text/javascript">
<!--
function addcursor ()
{
if (document.login) {
document.login.username.focus();
}
}
//-->
</script>
</head>
<body OnLoad ="addcursor()">
<form name="login" id="login" action="" method="post">
<input type = "text" name="username" id="username" />
<input type="password" name="password" />
</form>
</body>
</html>
(end code)
But if you remove the form in the body section from the code, an error "object does not exist or is null" results.
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Jul 21, 2011
I was trying to create JavaScript error handling for a form, and I was trying to get an error message to show up underneath the field where there was an error. (I am trying to avoid alert boxes.) I only have two fields, and my problem is that only one field is showing an error message. If I place an error in the input for the second field, the error shows up under the first field. How can I get the error messages to show up under the correct form field?
Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "[URL]">
<html xmlns="[URL]">
<head>
<meta http-equiv="Content-type" content="text/html;charset=UTF-8" />
<title>Carrots</title>
<style>
.qty {
width: 25px;
text-align: right;
}.blank {
display: none;
} .....
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Jul 20, 2005
I have a piece of simple code which take the user inputs and depending which check box is selected directs them to a different page.
<form name="allform">
<input type="radio" name="allsearch" value="Weaksearch">
<font face="Arial,Helvetica" >Weak </font><br>
<input type="radio" name="allsearch" value="Pinsersearch">
<font face="Arial,Helvetica" >Pinser </font><br>
<input type="radio" name="allsearch" value="Brutesearch">
<font face="Arial,Helvetica">Brute note </font> <br>
<input type="radio" name="allsearch" checked
value="gogsearch">
<font face="Arial,Helvetica">Google</font> <br>
<input type=text name=allsearchtext size=10 maxlength=255>
<input type="button" onClick="locateall(this)" value="Go"
name="button">
</form>
This works but the user needs to hit the go button, if they just hit return the text field is emptied, I would like if the user hits ENTER, the search begins.
I believe I can add something similar as
if (window.event.keyCode == 13)
But I am not sure how to incorporate it in the form?
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Jan 24, 2009
Because much of the talented JS community doesn't frequent the 'looking to hire' marketplace boards, I wanted to link to my post looking for help in understanding fully a group of functions I would like to use. While much of this I understand, along with some of the OOP principles used, there are some hang-ups I'm running into. Therefore, I'm looking for someone to walk me through the functions and help me understand the logic behind it. And since time is money, especially for those who are more skilled, I would rather respect this and pay for the conversation.
Further, if the person who takes up the task doesn't object, I will document the functions use for the community to benefit, since these are public boards. Of course, giving full credit to the original writers and the person who helped me understand.
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[Code]...
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<div class="mediaList accordion">
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[code]....
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I have a page: [URL] that works perfectly fine in every browser I try, except for actual IE7 (it even works fine in IE8 emulating IE7). When you search for something on that page and have a display of results, each result has a link that changes a table row's display to visible, and hides the row when clicked again. It doesn't do that in IE7. here are no errors or warning in Firefox's Error Console. But IE7 has an "Error on Page" notice (which does NOT appear in IE8 emulating IE7), that says:
Line: 59
Char: 11
Error: Could not get the display property. Invalid argument.
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Jun 12, 2009
[URL]
I'm currently having difficulty to debug this issue in ie7. When the page is loading, all carousel lists are exposed and content displays for a couple of seconds.
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Aug 19, 2010
I have some simple in put forms laid out as
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[code]....
on screen it looks like
My label my_input
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<ol>
<li><input type="text" id="width" size="3"></input> px</li>
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[Code]....
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How to display error message when string entered together with the characters outside the A-Z a-z 0-9?
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[Code]...
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Apr 2, 2010
Here's where I'm having an issue: [url]
It returns an error of "Error: ca is null" from this function:
Code:
The thing is that it will return a "null error" for whichever height I try to set first. I mean, if I swap the first two items:
Code:
It will return "Error: cb is null".
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Mar 6, 2006
I have a function that I am working with on onload of the body.
RIght now I don't think the function is important, I am just trying to call it and pass it the name of the field I need it to use and it is giving me an error.
Here is my function call in the body tag and the quotes are escaped because the html is set in a local var so...
onLoad="d.updateOptions(document.employees.getElementByName('company'), 'dept');"
I have also tried leaving the form name out
onLoad="d.updateOptions(document.getElementByName('company'), 'dept');"
The error I am getting is Error: document.getElementByName is not a function
I thought this was how you used this. Can someone enlighten me as to what is wrong with this please?
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Jan 18, 2010
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