Function Error.getStackTrace

Get a stack trace when an error occurs.

• Syntax String Error.getStackTrace(Function f , Error e , Number v )
  
  Provides a stack trace when an error is thrown. Note that Safari on Windows does not provide a way for creating a stack trace.
• Parameters

  Function f

  The function which raised the error

  Error e

  The error object which was thrown

  Number v

  The verbosity of the stack trace report. Only relevant for IE
  
  Verbosity: 0 - Only function names are reported in trace
  Verbosity: 1 - Arguments name:value pairs and function body of anonymous functions
  Verbosity: 2 - Function body of non-anonymous functions as well
  Verbosity: 3 - Enumeration of unknown arguments
  Verbosity: 4 - Include native functions in enumeration og objects (a lot of info)

• Return value A string describing the stacktrace if available.
• Download
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  Source

  Unless otherwise noted all code in the JSLab Standard Library is licensed as GPLv3. See http://www.gnu.org/licenses/gpl.html for the entire license.

  This function has dependencies and will not work stand-alone. Use the download button above instead of copy/paste.

  // ************************************************************************** // Copyright 2007 - 2009 Tavs Dokkedahl // Contact: http://www.jslab.dk/contact.php // // This file is part of the JSLab Standard Library (JSL) Program. // // JSL is free software; you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation; either version 3 of the License, or // any later version. // // JSL is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. // *************************************************************************** // Get stacktrace Error.getStackTrace = function(f,e,ver) { var stack = ''; // If IE if (document.createEventObject) { var j = 0; var tmp = dump = null; var a = null; //var f = arguments.callee.caller; while(f) { stack += 'Stack count: ' + (j++) + '\nFunction: '; if (ver > 0) { // Get parameter names a = f.getArguments(); dump = ''; tmp = ''; // Get values for parameter names for(var i=0; i<a.length; i++) { if (!a[i]) a[i] = 'arg' + i; if (f.arguments && f.arguments[i] !== undefined) { // If argument is a string add quotes if (f.arguments[i].constructor == String) tmp += a[i] + ':\'' + f.arguments[i] + '\', '; // If argument value is another simple type else if (f.arguments[i].constructor == Number || f.arguments[i].constructor == Boolean || f.arguments[i] === null) tmp += a[i] + ':' + f.arguments[i] + ', '; // Else just log 'type' of object else if (f.arguments[i].constructor) tmp += a[i] + ':[' + f.arguments[i].constructor.getName + '], '; // Event object else if (f.arguments[i].srcElement !== undefined) tmp += a[i] + ':window.event , '; // Unknown - dump entire object else { tmp += a[i] + ':n/a , '; if (ver > 2) { dump += 'Enumeration of ' + a[i] + ':\n'; for(var p in f.arguments[i]) dump += p + ': ' + f.arguments[i][p] + '\n'; } } } else tmp += a[i] + ':undefined, '; } stack += f.getName() + '(' + tmp.substring(0,tmp.length - 2) + ')\n'; stack += dump; } else stack += f.getName(); // If anonymous or verbosity > 1 if (ver > 1 || (ver > 0 && f.getName() == 'anonymous')) { stack += f.getBody(); } // Iterate to next function on callstack stack += Error.Separator; f = f.caller; } } // Firefox else if (e.stack) stack = e.stack + Error.Separator; // Opera else if (e.stacktrace) stack = e.stacktrace + Error.Separator; // Safari provides no stacktrace else stack = "Unavailable" + Error.Separator; return "Stacktrace" + Error.Separator + stack; };