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Javascript Error Object Reference


The Error object can also be used to create an error message with the throw statement. this.name = "Error"; this.message = message; this.innerException = innerException; } My.Error.prototype = new Error(); My.Error.prototype.constructor = My.Error; My.Error.prototype.toString = function (includeStackTrace) { var msg = this.message; var e = this.innerException; while You provided an informative answer and definitely don't deserve it. When an Error object needs to be converted to a string, the JavaScript interpreter automatically calls its toString method. (*) - The method is inherited from the Error.prototype. get redirected here

The Framework of a Riddle Hit a curb; chewed up rim and took a chunk out of tire. Custom Error! Throwing in tons of error checking is kind of part of the reality of using these web forms controls and their old data binding methods. The following lists only contain the members of the Error and Error.prototype objects.

Javascript Error Message

Join them; it only takes a minute: Sign up How do I create a custom Error in JavaScript? share|improve this answer edited Feb 22 '11 at 20:59 answered Feb 22 '11 at 19:56 David 112k18108179 i am debugging.. number* Sets or retrieves the error code as a number.

Examples: Example 1: This example shows how to catch an exception and displays information about the error: try { unknownFunction (); } catch(e) { document.write ("The error message: " + e.message Browse other questions tagged javascript asp.net or ask your own question. It also preserves stack trace which is very important in non trivial applications. Javascript Throw Exception Specific word to describe someone who is so good that isn't even considered in say a classification Can an umlaut be written as a line in handwriting?

Technically entering a string or number less than 13 certainly doesn't constitute an exception in JavaScript, though for our purpose here, they should. Define Inaccuracy Why in your example you assign name to this.name and not to NotImplementedError.prototype.name? String that specifies the message of the error. asked 5 years ago viewed 3603 times active 5 years ago Blog Stack Overflow Podcast #91 - Can You Stump Nick Craver?

prototype Returns a reference to the Error.prototype object. Eror Hot Network Questions Previous company name is ISIS, how to list on CV? message: A description of the error, with this description varying depending on the browser. Works optimally in Node.JS, and Chrome.

Define Inaccuracy

For more information see our privacy policy. Please enter your age before continuing:") if (isNaN(parseInt(agecheck))) throw new SyntaxError("Please enter a valid age") else if (agecheck<13) throw new RangeError("Sorry, but you are too young for this movie") alert("Enjoy the Javascript Error Message Copyright (c) 1997-2016 JavaScript Kit. Define Miscalculation It allows instanceof checks to behave as usual plus type and message are correctly reported in Firefox and V8 (Chome, nodejs).

When trying to set its .innerHTML property, a TypeError occurs, since we're trying to assign the .innerHTML property to a null object: try{ document.getElementById("mydiv").innerHTML='Success' //assuming "mydiv" is undefined } catch(e){ if http://shpsoftware.com/javascript-error/javascript-error-object-required.php Default is 0. I thought that in order for this to work you need to define NotImplementedError.prototype.constructor explicitly. –jayarjo Jul 9 '11 at 9:45 Next time, please tear out all the extraneous In both cases, by using throw, control is instantly transferred to catch, with e.message displaying a different message. Define Mistakenly

throw new NotImplementedError(); share|improve this answer answered Jan 27 '14 at 1:34 Aram Kocharyan 13.1k85173 This works great, except that the stack will contain an extra line for the I think I like yours the best. –mpoisot Apr 13 '15 at 21:38 2 Instead of temp.name = this.name = 'MyError', you can do temp.name = this.name = this.constructor.name. Crowder May 3 '15 at 17:58 Oh i guess i meant using "instanceof fixError" - of course then "instanceof Error" wouldn't work.. useful reference Browse other questions tagged javascript exception or ask your own question.

This level of detail may be useful when you wish to sniff out a specific type of error in your catch clause. What Is Error FYI, you can instantiate vanilla Errors by passing them an existing error. –Kyle Mueller Apr 22 '14 at 15:50 1 you shouldn't return this in a constructor. –Onur Yıldırım Jan Methods: Method Support Description toSource ( )* Returns a string representing the source code of the current Error object.

It would give proper call stack + 1 line for constructor (it's a suitable pay-off): this.stack = new Error().stack; –Meredian Sep 20 '13 at 7:35 | show 16 more comments up

How to find positive things in a code review? What does a profile's Decay Rate actually do? Of course, the real question is if we really need it and when; there are cases (99% in my opinion) where a graceful return of false is enough and leave only Define Misconception Properties: Property Support Description description* Sets or retrieves the description of the error.

Example: http://jsfiddle.net/centurianii/m2sQ3/1/ share|improve this answer edited Aug 16 '14 at 0:32 kzh 9,20564477 answered Mar 22 '14 at 13:10 centurian 388413 add a comment| up vote 0 down vote If you share|improve this answer answered Mar 6 '13 at 19:27 Paulo Enmanuel 111 This is precisely what doesn't work, hence the question... –Offirmo Aug 30 '13 at 13:14 add a How to reset DisplayName to empty using Sitecore PowerShell Extensions? http://shpsoftware.com/javascript-error/javascript-error-object-properties.php Is that needed to reproduce the problem? –B T Jul 26 '13 at 20:39 2 Edited this question so that its understandable in 10 seconds rather than 10 minutes –B

String that specifies the message of the error. Sets the fileName property of the Error object. B. I'm hoping it might fix the stack-trace problem as well. –Gili Aug 2 '13 at 16:23 8 Simple trick to get meaningful stacktrace is to generate error in constructor and

URIError An error when encoding or decoding the URI has occurred (ie: when calling encodeURI()). If that's not enough, you can even throw a generic Error object with custom name and message properties: throw{ name: "JavaScriptKit Error", message: "Error detected. The prototype property is static, it cannot be accessed from an instance of the Error object, only Error.prototype is allowed. (*) - The property is inherited from the Error.prototype. Sorry about that. –jschr Sep 9 at 16:01 @jschr thank you for the reply –jherax Sep 9 at 16:26 add a comment| up vote 0 down vote Try a

function NotImplementedError(message) { return new Error("Not implemented", message); } x = new NotImplementedError(); Though I'm not sure why you'd need to do this. Name spelling on publications Why do people move their cameras in a square motion? Visit Chat Related 3229What is the most efficient way to deep clone an object in JavaScript?3257How to remove a property from a JavaScript object?2763Setting “checked” for a checkbox with jQuery?0Object reference It was definitely not intentional but I can't undo it as it's over the grace period.

Any ideas as to why, or if there is a better way to create a new Error subclass? more hot questions question feed default about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation Sets the error property of the Error object. All rights reserved.

Why does Mal change his mind? All other syntax errors are not caught by try/catch/finally, and will trigger the default browser error message associated with the error. What is the 'dot space filename' command doing in bash? The following snippet will get you extension which meets the following requirements.

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