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

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

'use strict';

function jamie (){
    console.info(arguments.callee.caller.name);
    //this will output the below error
    //uncaught TypeError: 'caller', 'callee', and 'arguments' properties may not be accessed on strict mode functions or the arguments objects for calls to them
};

function jiminyCricket (){
   jamie();
}

jiminyCricket ();
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1 Answer

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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.


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