How do you find out the caller function in JavaScript when use strict is enabled?

Jamie Hutber picture Jamie Hutber · Apr 11, 2015 · Viewed 42.3k times · Source

Is it possible to see the callee/caller of a function when use strict is enabled?

Answer

p.s.w.g picture p.s.w.g · Apr 11, 2015

For what it's worth, I agree with the comments above. For whatever problem you're trying to solve, there are usually better solutions.

However, just for illustrative purposes, here's one (very ugly) solution:

'use strict'

function jamie (){
    var callerName;
    try { throw new Error(); }
    catch (e) { 
        var re = /(\w+)@|at (\w+) \(/g, st = e.stack, m;
        re.exec(st), m = re.exec(st);
        callerName = m[1] || m[2];
    }
    console.log(callerName);
};

function jiminyCricket (){
   jamie();
}

jiminyCricket(); // jiminyCricket

I've only tested this in Chrome, Firefox, and IE11, so your mileage may vary.