Javascript Error Object Line Number
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Javascript Get Line Number Of Calling Function
Get web development help Join the MDN community Report a content problem Report a bug javascript try catch error line number Search Search Languages Català (ca) Deutsch (de) Español (es) Français (fr) 日本語 (ja) Русский (ru) Add a translation Edit Advanced Advanced History Print this javascript __line__ article MDN Web technology For developers JavaScript JavaScript reference Standard built-in objects Error Error.prototype.lineNumber Your Search Results Driptap tjcrowder fscholz Mingun paul.irish Error.prototype.lineNumber In This Article ExamplesUsing lineNumberAlternative example using error eventSpecificationsBrowser compatibilitySee also Non-standard This feature is non-standard and is not on a standards track. Do not use it on
Nodejs Try Catch Line Number
production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future. The lineNumber property contains the line number in the file that raised this error. Examples Using lineNumber var e = new Error('Could not parse input'); throw e; console.log(e.lineNumber) // 2 Alternative example using error event window.addEventListener('error', function(e) { console.log(e.lineNumber); // 5 }); var e = new Error('Could not parse input'); throw e; This is not a standard feature and lacks widespread support. See the browser compatability table below. Specifications Not part of any specification. Non-standard. Browser compatibility Desktop Mobile Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari Basic support No support (Yes) No support No support No support Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile Basic support No support No support (Yes) No support No support No support See also Error.prototype.stack Error.prototype.columnNumber Error.prototype.fileName Docum
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Node Js Console.log Line Number
Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error/lineNumber only takes a minute: Sign up JavaScript exception handling - displaying the line number up vote 21 down vote favorite 2 When catching / handling exceptions in JavaScript, how can I determine what the call stack was when the exception occurred? (and also if possible what the line number was) try { // etc... } catch (ex) { // At http://stackoverflow.com/questions/1901012/javascript-exception-handling-displaying-the-line-number this point here I want to be able to print out a detailed exception // message, complete with call stack, and if possible line numbers. } javascript exception-handling callstack share|improve this question asked Dec 14 '09 at 13:45 Justin 54.3k34151279 add a comment| 3 Answers 3 active oldest votes up vote 14 down vote accepted Each browser handles this differently, so there isn't a universal way to do it. This blog post has some good code to dump a stack trace for most supported browsers. I don't think there is a good way to provide the line number. If you're looking to debug one function in particular, Firebug has a good stack trace function (vis console.trace()). share|improve this answer answered Dec 14 '09 at 13:52 Chris Clark 1,75611220 Of course, FireBug! –Upperstage Dec 14 '09 at 14:50 1 That blog is pretty old(2008). There's got to be a better way. –RayLoveless Jun 10 '14 at 22:59 blog post is dead... –Ryan Ahearn Aug 29 '14 at 13:56 add a comment| up vote
resources Windows Server 2012 resources Programs MSDN subscriptions Overview Benefits Administrators Students Microsoft Imagine Microsoft Student Partners ISV Startups TechRewards Events Community Magazine Forums Blogs Channel 9 Documentation APIs and https://msdn.microsoft.com/en-us/library/hh699850(v=vs.94).aspx reference Dev centers Samples Retired content We’re sorry. The content you requested has been removed. You’ll be auto redirected in 1 second. JavaScript Reference JavaScript Objects Error Object Error Object stack https://bugs.chromium.org/p/v8/issues/detail?id=1914 Property (Error) stack Property (Error) stack Property (Error) constructor Property (Error) prototype Property (Error) description Property (Error) message Property (Error) name Property (Error) number Property (Error) stack Property (Error) stackTraceLimit Property line number (Error) toString Method (Error) valueOf Method (Error) TOC Collapse the table of content Expand the table of content This documentation is archived and is not being maintained. This documentation is archived and is not being maintained. stack Property (Error) (JavaScript) Gets or sets the error stack as a string that contains the stack trace frames. Syntax Copy object .stack RemarksThe stack error line number property is set to undefined when the error is constructed, and gets the trace information when the error is raised. If an error is raised multiple times, the stack property is updated each time the error is raised.Stack frames are displayed in the following format: at FunctionName (
Errors thrown in an eval. Starred by 9 users Reported by cho...@ualberta.net, Jan 23 2012 Back to list Status: Fixed Owner: yangguo@chromium.org Closed: Jun 2012 HW: ---- OS: ---- Priority: ---- Type: FeatureRequest Sign in to add a comment Can we augment the Error object to include the fileName and lineNumber? I realize this is non-standard behavior per the EMCAScript 5 specification, but it is supported in some browsers (e.g. Firefox). This is helpful in running eval'd code, for example. A SyntaxError could locate what line number actually caused the SyntaxError. In embedded V8, it is possible in C++-land to get the fileName and lineNumber. Much better from the user's perspective would be if they are available with the Error object in JavaScript-land. Comment 1 by compwiz...@gmail.com, May 6 2012 Processing It would be nice to get line number (and possibly offset or column number) of a SyntaxError that is thrown in eval'd code. Right now there is no way to get the line numbers from the v8::Script object after a SyntaxError. Node.JS bug upstream: https://github.com/joyent/node/issues/2734 Project Member Comment 2 by yangguo@chromium.org, May 8 2012 Processing Labels: Type-FeatureRequest Owner: yangguo@chromium.org Status: Accepted Summary: Capture correct line numbers for Errors thrown in an eval. (was: NULL) The problem described in the first post is already solved. Every Error object created in V8 has a .stack property that contains the string representation of the stack trace captured at creation point. It's easy to parse the file name and line numbers from that string. An alternative is described in http://code.google.com/p/v8/wiki/JavaScriptStackTraceApi. The actual problem here is that the line numbers in eval'ed code is not being captured. This would be a feature request. Comment 3 by compwiz...@gmail.com, May 8 2012 Processing @yangguo - Yes, my apologies; you are correct. I would like to request that line numbers from eval'ed strings are captured in the Error Object somewhere, perhaps somewhere in the .stack property you described. Comment 4 by compwiz...@gmail.com, May 30 2012 Processing Any update on this issue? Project Member Comment 5 by yangguo@ch