/* <![CDATA[ */
  function printStackTrace() {
	  var callstack = [];
	  var isCallstackPopulated = false;
	  try {
	    i.dont.exist+=0; //doesn't exist- that's the point
	  } catch(e) {
	    if (e.stack) { //Firefox
	      var lines = e.stack.split("\n");
	      for (var i=0, len=lines.length; i<len; i++) {
	        if (lines[i].match(/^\s*[A-Za-z0-9\-_\$]+\(/)) {
	          callstack.push(lines[i]);
	        }
	      }
	      //Remove call to printStackTrace()
	      callstack.shift();
	      isCallstackPopulated = true;
	    }
	    else if (window.opera && e.message) { //Opera
	      var lines = e.message.split("\n");
	      for (var i=0, len=lines.length; i<len; i++) {
	        if (lines[i].match(/^\s*[A-Za-z0-9\-_\$]+\(/)) {
	          var entry = lines[i];
	          //Append next line also since it has the file info
	          if (lines[i+1]) {
	            entry += " at " + lines[i+1];
	            i++;
	          }
	          callstack.push(entry);
	        }
	      }
	      //Remove call to printStackTrace()
	      callstack.shift();
	      isCallstackPopulated = true;
	    }
	  }
	  if (!isCallstackPopulated) { //IE and Safari
	    var currentFunction = arguments.callee.caller;
	    while (currentFunction) {
	      var fn = currentFunction.toString();
	      var fname = fn.substring(fn.indexOf("function") + 8, fn.indexOf("(")) || "anonymous";
	      callstack.push(fname);
	      currentFunction = currentFunction.caller;
	    }
	  }
	  output(callstack);
	}

	function output(arr) {
	  //Output whatever you want
	  console.info('stack trace', arr.join("nn"));
	}
  
/* ]]> */

javascript backtrace function

javascript

JavaScript