Error Object Javascript Line Number
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Javascript Error Object Properties
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Javascript Get Current Line Number
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 name: var callerFunc = arguments.callee.caller.toString(); callerFuncName = (callerFunc.substring(callerFunc.indexOf("function") + 8, callerFunc.indexOf("(")) || "anoynmous") Is there a way to discover the
Javascript Error Object
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 3,15773147 asked Aug 27 '09 at 12:49 Tal 56331018 2 I don't think this 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
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Node.js Get Current Line Number
web development help Join the MDN community Report a content problem Report a bug Search javascript error line number Search Languages Català (ca) Español (es) Français (fr) 日本語 (ja) 한국어 (ko) Português (do Brasil) (pt-BR) Русский (ru) 中文 (简体) (zh-CN) Add a translation Edit Advanced Advanced http://stackoverflow.com/questions/1340872/how-to-get-javascript-caller-function-line-number-how-to-get-javascript-caller History Print this article MDN Web technology For developers JavaScript JavaScript reference Standard built-in objects TypeError Your Search Results fscholz Sebastianz ward Mingun arai Sheppy Potappo Sevenspade TypeError In This Article SyntaxParametersDescriptionPropertiesMethodsTypeError instancesPropertiesMethodsExamplesCatching a TypeErrorCreating a TypeErrorSpecificationsBrowser compatibilitySee also The TypeError object represents an error when a value is not of the expected https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypeError type. Syntax new TypeError([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 TypeError is thrown when an operand or argument passed to a function is incompatible with the type expected by that operator or function. Properties TypeError.prototype Allows the addition of properties to a TypeError object. Methods The global TypeError contains no methods of its own, however, it does inherit some methods through the prototype chain. TypeError instances Properties TypeError.prototype.constructor Specifies the function that created an instance's prototype. TypeError.prototype.message Error message. Although ECMA-262 specifies that TypeError should provide its own message property, in SpiderMonkey, it inherits Error.prototype.message. TypeError.prototype.name Error name. Inherited from Error. TypeError.prototype.fileName Path to file that raised this error. Inherited from Error. TypeError.prototype.lineNumber Line number in file that raised this error. Inherited from Error. TypeError
need to throw an exception and get the line number and the call stack in JavaScript, specially when we are developing a feature that will be used by other developers. Since JavaScript http://www.jomendez.com/2015/02/25/throw-error-line-number-javascript/ have far less tools to aid in debugging than other languages, when we are https://nodejs.org/api/errors.html building 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 != ‘function’){ // throw an exception here }else{ callback(); } } With this code we can achieve it: var err; try { throw new Error('myError'); } line number 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 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: javascript error object 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 9 − = 4 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 Tooltip, without JavaScript or Jquery Prevent angular executing controller twice (Mini-Challenge 11) How to avoid js files cache script bundle with razor State Management in ASP.Net ASP.NET MVC Routers common questions Archives June 2016(2) May 2016(2) February 2016(1) January 2016(1) December 2015(2) November 2015(4) October 2015(6) September 2015(1) July 2015(2) June 2015(4) May 2015(8) March 2015(1) February 2015(10) July 2014(3) The author: You can find me on: Twitter @JoMendezDev GitHub JoMendez Linkedin Jose Mendez Proudly powered by WordPress |
Query Strings Readline REPL Stream String Decoder Timers TLS/SSL TTY UDP/Datagram URL Utilities V8 VM ZLIB GitHub Repo & Issue Tracker Mailing List Node.js v6.8.0 Documentation Index | View on single page | View as JSON Table of Contents Errors Error Propagation and Interception Node.js style callbacks Class: Error new Error(message) Error.captureStackTrace(targetObject[, constructorOpt]) Error.stackTraceLimit error.message error.stack Class: RangeError Class: ReferenceError Class: SyntaxError Class: TypeError Exceptions vs. Errors System Errors Class: System Error error.code error.errno error.syscall Common System Errors Errors# Applications running in Node.js will generally experience four categories of errors: Standard JavaScript errors such as: