Error Line Number Javascript
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Javascript Get Line Number
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Node.js Get Current Line Number
Join them; it only takes a minute: Sign up How to get JavaScript caller function line number? How to get JavaScript caller source URL? up vote 75 down vote favorite 31 I am using the following for getting the nodejs try catch line number JavaScript caller function name: var callerFunc = arguments.callee.caller.toString(); callerFuncName = (callerFunc.substring(callerFunc.indexOf("function") + 8, callerFunc.indexOf("(")) || "anoynmous") Is there a way to discover the line number from which the method was called? Also, is there a way to get the name of the JavaScript file the method was called from? Or the source URL? javascript share|improve this question edited Mar 3 '14 at 21:07 Kara 3,15473147 asked Aug 27 '09 at 12:49 Tal 56331018 2 I don't think this javascript catch error line number is possible in IE, or else we would have a way to get around there CRAPPY error messages that deliver no detail. But if it is possible I would LOVE to know as well! –Zoidberg Aug 27 '09 at 13:00 add a comment| 13 Answers 13 active oldest votes up vote 21 down vote accepted kangax's solution introduces unnecessary try..catch scope. If you need to access the line number of something in JavaScript (as long as you are using Firefox or Opera), just access (new Error).lineNumber. share|improve this answer answered Aug 28 '09 at 17:16 Eli Grey 22.7k105283 7 Hi, Thanks for that addon. do you know if its possible to get line number from previous call ? Lets say method A calls B , and now in B I would like to know in what line under A the call was made? –Tal Aug 30 '09 at 11:12 65 This is ticked, but doesn't answer the question, which is how to get the line number of the caller function. –mikemaccana Apr 17 '12 at 8:45 2 Also, this is extremely limited. The best solution is to throw an error and use regex on the error.stack which is available in all modern browsers. You can easily extract that path, file, line, and column. No problem. –arctelix Oct 4 '15 at 3:49 add a comment| up vote 62 down vote This
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Node Error Line Number
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Node Js Console.log Line Number
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 http://stackoverflow.com/questions/1340872/how-to-get-javascript-caller-function-line-number-how-to-get-javascript-caller { // etc... } catch (ex) { // At 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 54.2k33151278 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 http://stackoverflow.com/questions/1901012/javascript-exception-handling-displaying-the-line-number 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 10 down vote Have a look at this. A way to analyse the available information: try { doInit(); } catch(err) { var vDebug = ""; for (var prop in err) { vDebug += "property: "+ prop+ " value: ["+ err[prop]+ "]\n"; } vDebug += "toString(): " + " value: [" + err.toString() + "]"; status.rawValue = vDebug; } share|improve this answer answered Dec 14 '09 at 13:53 jldupont 41.7k32140258 Just a note - if you are using node server side this works quite nicely. Upvoted - Thanks for posting! –j03m Sep 26 '11 at 1:04 add a comment| up vote 1 down vote I've discovered that in JavaScript running under IE it is not possible to capture a stack trace at the point that an exception is caught. According to this PDF the only way of getting a stack trace in IE is if you don't handle the exception. share|improve this answer answered
& 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 https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error/Stack Join the MDN community Report a content problem Report a bug Search Search Languages Català (ca) Deutsch (de) Français (fr) 日本語 (ja) Русский (ru) Add a translation Edit Advanced Advanced History Print this article MDN Web technology For developers JavaScript JavaScript reference Standard built-in objects Error Error.prototype.stack Your Search Results fscholz JamesGreene szabolcs-szilagyi jurko.gospodnetic ttromey Mingun Nickolay lydell Sheppy paul.irish evilpie user01 Brettz9 Error.prototype.stack In This line number Article DescriptionExampleStack of eval'ed codeSpecificationsBrowser compatibilitySee also Non-standard This feature is non-standard and is not on a standards track. Do not use it on 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 non-standard stack property of Error objects offer a trace of which functions were error line number called, in what order, from which line and file, and with what arguments. The stack string proceeds from the most recent calls to earlier ones, leading back to the original global scope call. Description Each step will be separated by a newline, with the first part of the line being the function name (if not a call from the global scope), then by an at (@) sign, the file location (except when the function is the error constructor as the error is being thrown), a colon, and, if there is a file location, the line number. (Note that the Error object also possesses the fileName, lineNumber and columnNumber properties for retrieving these from the error thrown (but only the error, and not its trace).) Note that this is the format used by Firefox. There is no standard formatting. However, Safari 6+ and Opera 12- use a very similar format. Browsers using the V8 JavaScript engine (such as Chrome, Opera 15+, Android Browser) and IE10+, on the other hand, uses a different format (see these MSDN error.stack docs). Argument values in the stack: Prior to Firefox 14 (bug 744842), the function name would be followed by the argument values conve