IIFE Variable Assignment Example

script.js

//This variable holds/stores a function that prints 'welcome to the jungle'
const welcomeMessageVariable = function (){
                               return "Welcome to the jungle!";
                               };

//we will invoke our first variable here below
welcomeMessageVariable(); // Welcome to the jungle!


//This second variable holds/stores the value 'welcome to the jungle'
const welcomeMessageIIFE = (function(){
                              return "Welcome to the jungle!";
                           })(); 

//we will invoke it below. *Note how we do not need the '()'
welcomeMessageIIFE; // Welcome to the jungle!