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?

Answer 1

Like this

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