An IIFE (Immediately Invoked Function Expression) is a JavaScript function that runs as soon as it is defined. 00:00 Introduction 00:16 Definition of IIFE 03:16 Prevent pollution of the global namespace 05:27 The module pattern 07:58 For loops with var before es6 11:27 Outro Javascript IIFE - immediately invoked function expression javascript,immediately invoked function expression es6,Javascript IIFE - Immediately invoked Function expression,javascript tutorial,javascript basics