javascript: getting the name of the calling function

Question

I'm writing an error event handler that captures an error and makes an AJAX call to the server to report it. The problem is that a lot of times, my code looks like this:

function A() {

  //lots of works to calculate SomeParameters; can bug
  CalledVeryOften(SomeParameters);
}

function CalledVeryOften(SomeParameters) {
  // a little bit of work
}

If I capture the event in function A (or B, C, D...), great! But the problem is that if the window.onerror event fires in CalledVeryOften then it might be that the parameters might not be properly calculated.

Is there a way in CalledVeryOften to determine which function it was called from?

Answer 1

The name of the calling function can be obtained via the deprecated arguments.callee.caller.name property ^{MDN: arguments.callee}.

Another method is by parsing the value of new Error().stack.

In Chrome you can use:

var stackTrace = {};
Error.captureStackTrace(stackTrace); // Get the stack trace
stackTrace = stackTrace.stack;       // Formatted string