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Cannot Set Property Of Undefined Prototype

var SetAstAppLog = require('astAppLog')(); // <--invoking This would only be correct if require('astAppLog') returns a function which would then return a function. Is that what you want? Thus, the error you received. But so the context seems to be wrong. –BendEg Mar 2 '15 at 7:45 This is the point of my answer. http://dekovsoft.com/cannot-set/cannot-set-property-of-undefined-angularjs.html

Hyper Derivative definition. Execute bash script from vim Why do languages require parenthesis around expressions when used with "if" and "while"? Not the answer you're looking for? Can't i assign a property on it's prototype of Object A. Bonuses

Do humans have an obligation to prevent animal on animal violence? var SetAstAppLog = require('astAppLog')(); Why do you have the last parens? Converting the weight of a potato into a letter grade What crime would be illegal to uncover in medieval Europe? Define them like you have working, with objectType.prototype...

Compare elements iteratively What is with the speech audience? Antonym for Nourish Operator ASCII art How to decline a postdoc interview if there is some possible future collaboration? Please use our new forums at discuss.codecademy.com. so you can set property of an array, for the same reason,you can't set property of a undefined, because its NOT an object share|improve this answer edited Sep 20 '11 at

I changed one method signature and broke 25,000 other classes. var SetAstAppLog = require('astAppLog') /* no parens here */; –Blue Skies Nov 5 '13 at 16:27 add a comment| Your Answer draft saved draft discarded Sign up or log in I'm trying to do something similar to an associative array. How difficult is it to practically detect a forgery in a cryptosystem?

Your issue here was that you were using an incorrect answer. –Blue Skies Nov 5 '13 at 16:36 Show the code that actually uses the "funcLogErrors" function. –Pointy Nov But it works well enough for our purposes.) the problem What happens if we call the constructor, but accidentally omit the new keyword? var fubar = Fubar

Test failed. http://stackoverflow.com/questions/28799911/js-prototyping-cannot-set-property-moveright-of-undefined Reload to refresh your session. Some rights reserved. asked 7 months ago viewed 368 times active 7 months ago Upcoming Events 2016 Community Moderator Election ends Nov 22 Linked 1492 How does JavaScript .prototype work?

But i have declared moveLeft in the constructor in the keyCommands object. have a peek at these guys Is privacy compromised when sharing SHA-1 hashed URLs? so fubar is undefined. Browse other questions tagged javascript class properties prototype undefined or ask your own question.

Blender add rough/random surface 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 / Read this before you copy that code. You need to assign an object or array to d[a]: d[a] = []; d[a]["greeting"] = b; console.debug(d); share|improve this answer answered Sep 20 '11 at 2:47 Polaris878 12.7k2486120 1 Best check over here Ballpark salary equivalent today of "healthcare benefits" in the US?

Possible problems: you might have a typo, that keyCommands is spelled exactly you might refer to keyCommands outside its scope you might refer to keyCommands.moveRight before keyCommands is initialized you might Mimsy were the Borograves - why "mimsy" is an adjective? like so : http://jsfiddle.net/fantop4d/z62eA/5/ –pad31 Jun 20 '12 at 11:45 add a comment| up vote 2 down vote You have a typo.

But nevertheless, constructors that do not take into account the possibility of being called without the new keyword are a potential problem.

Alternatively, you could use an object initializer: d[a] = { greetings: b, data: c }; Or you could set all the properties of d in an anonymous function instance: d = Why did Michael Corleone not forgive his brother Fredo? One is an aspect of functionality, while the other is internal implementation. –Jeremy J Starcher Sep 19 '12 at 0:35 add a comment| up vote 2 down vote The object stored more hot questions default about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation Science Other

Reload to refresh your session. Moving a member function from base class to derived class breaks the program for no obvious reason Tank-Fighting Alien Is adding the ‘tbl’ prefix to table names really a problem? Prototype methods are there specifically to be shared amongst all instances, what you're doing is somewhere in-between, you either want them declared inside specific to that instance, like this: function mapTile(nx,ny) this content On 1941 Dec 7, could Japan have destroyed the Panama Canal instead of Pearl Harbor in a surprise attack?

How do I handle this? See above for more details.npm ERR! Course Forum Section 3 Exercise 3.5 TypeError: Cannot set property 'meow' of undefi... Typesetting text with math Why are LEDs in my home unaffected by voltage drop?

Test failed. Do Morpheus and his crew kill potential Ones? what loader are you using? result.protorype[key] should be result.prototype[key] share|improve this answer answered Jun 20 '12 at 9:50 phenomnomnominal 4,31311637 corrected it give always the same error jsfiddle.net/paglia_s/z62eA –Matteo Pagliazzi Jun 20 '12 at

How difficult is it to practically detect a forgery in a cryptosystem? See above for more details.npm ERR! Join them; it only takes a minute: Sign up TypeError: Cannot set property of undefined up vote -1 down vote favorite Here, i am trying to construct object in javascript. If you weren't in strict, then this would be the global object, and you'd have not received the error message, which wouldn't be helpful.

Developer does not see priority in git Development Workflow being followed On 1941 Dec 7, could Japan have destroyed the Panama Canal instead of Pearl Harbor in a surprise attack? You usually only assign to the prototype property of constructors: function Person(firstname, lastname) { this.firstname = firstname; this.lastname = lastname; } Person.prototype.name = 'Toby'; var A = new Person('John', 'Doe'); // Is adding the ‘tbl’ prefix to table names really a problem? We can fix that somewhat: function Fubar (foo, bar) { "use strict" this._foo = foo;

What is the total sum of the cardinalities of all subsets of a set? more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed Success! If it simply returns the function that you ultimately want to use, then you need to remove the trailing parens.

How to remove text field value after comma using apex code? var o = new SetAstAppLog(...my args...); Given this line of code, you're invoking your module immediately. robertjd referenced this issue in stormpath/stormpath-sdk-node Apr 7, 2015 Merged Fix 0.8 tests by using npm 1.4.3 #157 Sign up for free to join this conversation on GitHub. mhegazy added the Needs More Info label Nov 16, 2015 hxl-dy commented Nov 18, 2015 thanks for help.