Firefox Error Console Is Not Defined
Contents |
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about
Referenceerror Is Not Defined Javascript Function
Stack Overflow the company Business Learn more about hiring developers or posting ads is not defined javascript error with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow referenceerror $ is not defined jquery is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Why is Firefox 3 breaking with console.log up vote 11 down vote favorite
Function Is Not Defined Javascript
5 I have the following: console.log (a.time_ago() + ' ' + b.time_ago()); This is breaking in FireFox 3, meaning when FF hits that line in the JS, it goes no further. Strangely if I have Firebug open it doesn't break and continues as normal. Some how firebug prevents this issue? I'm puzzled on this one. Any thoughts as to why console.log would break firefox 3, but not if firebug is
Javascript Variable Is Not Defined
open? Thanks javascript firefox firebug firefox-3 share|improve this question edited Feb 10 '11 at 22:14 Pekka 웃 304k93697913 asked Feb 10 '11 at 22:13 AnApprentice 25.3k102384703 Isn't console.log part of firebug? and hence if its not open, there's no container to paste to... –Adam Holmes Feb 10 '11 at 22:16 add a comment| 6 Answers 6 active oldest votes up vote 30 down vote accepted This is not just Firefox. Your code will stop working in every browser (except Chrome and safari (in some instances) because they have console.log() built in along with their developer tools.) It is because when you don't have firebug open, the object "console" is not defined. You should take care never too leave console.log() functions in your code, or it will break in every browser. I'd like to add that I have sometimes used this function: function log () { if (typeof console == 'undefined') { return; } console.log.apply(console, arguments); } Then you can simply call: log(somevar, anothervar); and it will work the same way as console.log, but will not fail if firebug is not loaded (and is shorter to type :P) Cheers share|improve this answer edited Feb 10 '11 at 22:25 answered Feb 10 '11 at 22:16 arnorhs 8,
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About referenceerror variable is not defined Us Learn more about Stack Overflow the company Business Learn more about hiring
Javascript Uncaught Referenceerror Is Not Defined
developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join referenceerror is not defined angularjs the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up console is not defined? up http://stackoverflow.com/questions/4963354/why-is-firefox-3-breaking-with-console-log vote 0 down vote favorite I got errors on my extension saying that "console is not defined" as follows 1451925103265 addons.xpi WARN Exception running bootstrap method startup on MyExt@foo.net: ReferenceError: console is not defined (chrome://MyExt/content/MyExt.js:353:3) JS Stack trace: MyExt.prototype.register@MyExt.js:353:3 < startup@bootstrap.js:12:5 < XPI_callBootstrapMethod@XPIProvider.jsm:4204:9 < XPI_updateAddonDisabledState@XPIProvider.jsm:4337:1 < AddonWrapper_userDisabledSetter@XPIProvider.jsm:6684:9 < set_userDisabled@extensions.xml:1080:11 < oncommand@about:addons:1:1 What is wrong since console.log works on the startup function in the bootstrap.js file? BR http://stackoverflow.com/questions/34595778/console-is-not-defined javascript firefox-addon share|improve this question asked Jan 4 at 16:42 Pan Ruochen 5981720 Please edit your question to be on-topic: Questions seeking debugging help ("why isn't this code working?") must include: •the desired behavior, •a specific problem or error and •the shortest code necessary to reproduce it in the question itself. Questions without a clear problem statement are not useful to other readers. See: How to create a Minimal, Complete, and Verifiable Example, What topics can I ask about here?, and How do I ask a good question?. –Makyen May 28 at 22:45 Please format error messages either in code format (which preserves line formatting; this is normally preferred), or as quotations. Either format makes the error clearly stand out from the other text in your question. As it is, it is not easy to tell at a glance what is error text and what is not. –Makyen May 28 at 23:13 add a comment| 2 Answers 2 active oldest votes up vote 2 down vote Try importing it like this Cu.import('resource://gre/modules/devtools/Console.jsm'); share|improve this answer answered Jan 5 at 1:03 Noitidart 11.4k52162 It works........ –Pan Ruochen Jan 5 a
& Guides Learn the Web Tutorials References Developer Guides Accessibility Game development ...more docs Mozilla Docs Add-ons Firefox WebExtensions Developer ToolsFeedback Get Firefox help Get web development help Join the MDN https://developer.mozilla.org/en-US/docs/Mozilla/Debugging/Debugging_JavaScript community Report a content problem Report a bug Search Search Languages 中文 (简体) https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ReferenceError (zh-CN) Add a translation Edit Advanced Advanced History Print this article MDN Mozilla Debugging Debugging JavaScript Your Search Results jwhitlock AdamskiFTW leplatrem teoli vladikoff mizandaniel wbamberg Pandark fitzgen DCamp maybe jukbot mnoorenberghe Luke314 cold sun PikadudeNo1 Sheppy harth Kastor Dmose evilpie Aryx int3 madarche zhangpin04 siple007 Neil Johnjbarton BenB Ncmathsadist Kohei kohei.yoshino Debugging JavaScript In is not This Article Web ConsoleBrowser ConsoleError ConsoleBrowser Debugger (Built-in)Strict code checkingConsole.log in Browser Consoledump()Log.jsm (formerly log4moz)"debugger" keywordScratchpadSee AlsoOriginal Document Information This document is intended to help developers writing JavaScript code in Mozilla, mainly for Mozilla itself, but it may also be useful for web developers. It should give pointers to tools, aids and tricks which make debugging your code easier. Web Console This is the first place to go when is not defined you're debugging a web page; open the Web console using the Web Console option in the Web Developer menu. This shows any JavaScript errors in your app, as well as any logging calls from the console API. Browser Console The Browser Console lets you see all JavaScript errors and logging in the browser, including from Firefox code. To enable it, go to about:config in the url bar and set devtools.chrome.enabled to true, or set the "Enable chrome and add-on debugging" option in the developer tool settings. Activate it through with the menu Tools > Web Developer > Browser Console. You can also start the Browser Console when you launch Firefox, by launching Firefox from the command line and passing --jsconsole as a flag: /path/to/firefox --jsconsole Log to the Browser Console using the standard console API after importing Console.jsm: let console = (Cu.import("resource://gre/modules/Console.jsm", {})).console; console.log("Hello from Firefox code"); Error Console This is obsolete and is no longer enabled in Firefox by default. Use the Web Console or the Browser Console instead. Browser Debugger (Built-in) On Firefox 19 or later, it's possible to use the built-in JS debugger on the browser itself. Go to about:config and set the following two prefs: devtools.chrome.enabled: true devtools.debugger.remote-enabled: true After you resta
& Guides Learn the Web Tutorials References Developer Guides Accessibility Game development ...more docs Mozilla Docs Add-ons Firefox WebExtensions Developer ToolsFeedback Get Firefox help Get web development help Join the MDN community Report a content problem Report a bug Search Search Languages Français (fr) 日本語 (ja) Português (do Brasil) (pt-BR) Русский (ru) 中文 (简体) (zh-CN) Add a translation Edit Advanced Advanced History Print this article MDN Web technology For developers JavaScript JavaScript reference Standard built-in objects ReferenceError Your Search Results fscholz Mingun arai Sheppy ethertank Sevenspade Potappo ReferenceError In This Article SyntaxParametersDescriptionPropertiesMethodsReferenceError instancesPropertiesMethodsExamplesCatching a ReferenceErrorCreating a ReferenceErrorSpecificationsBrowser compatibilitySee also The ReferenceError object represents an error when a non-existent variable is referenced. Syntax new ReferenceError([message[, fileName[, lineNumber]]]) Parameters message Optional. Human-readable description of the error fileName Optional. The name of the file containing the code that caused the exception lineNumber Optional. The line number of the code that caused the exception Description A ReferenceError is thrown when trying to dereference a variable that has not been declared. Properties ReferenceError.prototype Allows the addition of properties to an ReferenceError object. Methods The global ReferenceError contains no methods of its own, however, it does inherit some methods through the prototype chain. ReferenceError instances Properties ReferenceError.prototype.constructor Specifies the function that created an instance's prototype. ReferenceError.prototype.message Error message. Although ECMA-262 specifies that ReferenceError should provide its own message property, in SpiderMonkey, it inherits Error.prototype.messag