How to log custom messages on console.log of function reference in javascript

Question

I have a scenario where in I want to print custom message on log of some method reference.

Say I have a function sum(){} now on console.log(sum); I want to log a custom message on console. How can we achieve that?

Possible duplicate of Is it possible to override JavaScript's toString() function to provide meaningful output for debugging? — Thierry
– Thierry, Commented Oct 20, 2017 at 18:25
@Thierry yes, it is possible to do that. You simply add a toString() method to the function. — code_monk
– code_monk, Commented Oct 20, 2017 at 18:36
@Thierry This question is different from that as I am trying to log function reference itself not the object created from it. — Gautam
– Gautam, Commented Oct 20, 2017 at 18:37

code_monk · Accepted Answer · 2017-10-20 18:38:22Z

1

Like this

var sum = function(){};

sum.toString = function(){ return 'my custom message'; };

console.log(sum);

answered Oct 20, 2017 at 18:38

code_monk

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1 Comment

This answers my questions to some extent. :)