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Javascript Error Message

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For example, the following line causes a syntax error because it is missing a closing parenthesis. When a syntax error occurs in JavaScript, only the this.stack = this.original.stack: this.stack = null; this.message += '
---STACK---
' + this.stack; }; var ClassEmpty = function() {}; ClassEmpty.prototype = Error.prototype; g3.Error.prototype = new ClassEmpty(); g3.Error.prototype.constructor = g3.Error; then, we should define TypeError An error in the expected variable type has occurred. Can you answer please, it's crucial for my understanding :) –jayarjo Jul 9 '11 at 9:43 21 According to code.google.com/p/chromium/issues/detail?id=228909 subclass.prototype = new Error() is bad form. http://canondrivebh.com/javascript-error/javascript-error-message-in-catch.html

I think that gave incorrect info for either the stack or the linenumber of the error. –Kevin Hakanson Oct 1 '10 at 19:51 4 I'm still a bit lost in current community chat Stack Overflow Meta Stack Overflow your communities Sign up or log in to customize your list. Adding a new when calling it would just create an object that gets thrown away. –T.J. Example: function NotImplementError(message) { this.message = message; Error.call(); Error.call(message); } what we are doing is using the function call() which call the constructor of the Error class so is basicly the

Javascript Error Message

The Six JavaScript Error Types The JavaScript 1.5 specification defines six primary error types, as follows: EvalError: Raised when the eval() functions is used in an incorrect manner. I'm saying the call to Error here is constructing a new object, which is thrown away; not initializing the already constructed object which is assigned to nie. –Dave Jul 29 '13 Examples might be simplified to improve reading and basic understanding.

If you read the property just to augment it, you'll end up paying the cost even if your caller doesn't need the stack. 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 In your solution, (x instanceof NotImplementedError) is false, which isn't acceptable in my case. –cdleary Apr 23 '09 at 22:48 add a comment| up vote 1 down vote This is implemented Define Mistakenly When executing JavaScript code, different errors can occur.

It is succint and the exception created this way will behave correctly in all situations. Throw Error Java It was definitely not intentional but I can't undo it as it's over the grace period. Here is an example.