Javascript get amount of functions on the Call Stack

Question

I am trying to read the amount of functions on the call stack. Is there any possibility to do this with javascript?

Thank you in advance!

edit: As far as I understand, the call stack contains the functions which are excecuted at the moment. For example

foo(){
bar();
}

leads to the call stack

bar
foo

My question is now if it is possible to get the amount of functions (in this case 2)

If you could describe the problem you're trying to solve, it might help people make useful suggestions. — Pointy, Feb 11 '16 at 00:00
Is [this](http://stackoverflow.com/q/591857/327815) close to what you are after? — Jokester, Feb 11 '16 at 00:02

Sukima · Accepted Answer · 2016-02-11T00:20:51.103

The question lacks detail so I assume the following specs: output a count of the number of functions in a stack trace.

First get the stack trace by constructing an error.

function getStack() {
  return new Error().stack;
}

Each call in the stack trace is separated by a new line so we can count them:

function getStackCount() {
  return new Error().stack.split('\n').length;
}

To adjust for the function call here you could minus two (one for the new Error() and one for the getStackCount():

function getStackCount() {
  return Math.max(new Error().stack.split('\n').length - 2, 0);
}

1 Answers1