Javascript Try Catch Error Line Number
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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 Stack Overflow the company javascript get line number Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs node.js get current line number Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, nodejs try catch line number just like you, helping each other. Join them; it 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, node error line number 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 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|
Node Catch Error Line Number
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 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 41.8k32140258 Just a note - if you are using node server side this works quite nicely. U
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Nodejs Get Error Line Number
or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question node js console.log line number 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; javascript get calling function 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 32 I am using the following for getting the JavaScript caller function http://stackoverflow.com/questions/1901012/javascript-exception-handling-displaying-the-line-number 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 3,16573147 asked Aug 27 '09 at 12:49 Tal 56331018 2 I don't think this is possible in IE, http://stackoverflow.com/questions/1340872/how-to-get-javascript-caller-function-line-number-how-to-get-javascript-caller 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 20 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 22.8k105283 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 works for me in chrome/QtWebView function getErrorObject(){ t
need to throw an exception and get the line number and the call stack in JavaScript, specially when we http://www.jomendez.com/2015/02/25/throw-error-line-number-javascript/ are developing a feature that will be used by other developers. Since JavaScript have far less tools to aid in debugging than other languages, when we are building https://www.tutorialspoint.com/javascript/javascript_error_handling.htm a functionality it is handy to throw an exception when the developer that is using you code need to meet certain requirements. For example: function someFunction(callback){ if(typeof callback line number != ‘function’){ // throw an exception here }else{ callback(); } } With this code we can achieve it: var err; try { throw new Error('myError'); } catch (e) { err = e; } if (!!err) console.log(err.stack); if you put this code in the console (chrome) this is the result: Error: myError at :4:11 at Object.InjectedScript._evaluateOn (:777:140) at error line number Object.InjectedScript._evaluateAndWrap (:710:34) at Object.InjectedScript.evaluate (:626:21) This is the code wrapped in a function to enable re-utilization: Compatibility by Mozilla Descktop compatibility: Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari Basic support (Yes) (Yes) 10 (Yes) 6 Mobile compatibility: Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile Basic support Android 4 (perhaps Android 3, but not Android 2) ? ? ? ? 6 Leave a comment Post navigation « Optimizing code using Object.defineProperty instead of $scope for $watch in AngularJs What’s coming in EcmaScript 6 Part 1 » Leave a Reply Cancel reply Your email address will not be published. Required fields are marked * Name * Email * Website seven × six = Comment Yes, add me to your mailing list. Subscribe to our Newsletter Enter your email address to subscribe to my blog and receive notifications of new posts by email. Search Categories AngularJS ASP.NET Best-Practices C# Interview-Questions JavaScript Microsoft Certification Exam mini-challenges Protractor Recent Posts: CSS To
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