Add a function "pipe" to the function prototype

addfunctofuncprototype.js

Function.prototype.pipe = function(fun) {
  return function(param) {
    return fun(this(param));
  }.bind(this); //The bind() method creates a new function that, when called, has its this keyword 
 };             //set to the provided value, with a given sequence of arguments preceding any provided
                //when the new function is called.