Who called me?

whocalledme.js

// This is very common in big projects with a lot of scripts, 
// when the programmer doesn't know where a function/action was called

// Assigning a reference
$.fn.val2 = $.fn.val;

// Overwriting the original function
$.fn.val = function(){
  console.log( this, arguments );
  console.log( 'Called from: ', arguments.callee.caller );
  
  // Calling the original function to keep the flow
  return $.fn.val2.apply(this, arguments);
};

// Example:
var myMethod = function(){
  $('input:eq(0)').val(1);
};

myMethod();