IIFE in JavaScript | Why it so Special?

IIFE in JavaScript, Why it is so Special

IIFE or Immediately Invoked Function Expressions in JavaScript. It's a special type of function expression. A function is invoked as soon as it is defined. By doing so we get advantages.

Basically a function, most often it will be an anonymous function is used in an IIFE. Since the components it could be variables or nested functions inside IIFE would be local to the expression. Can't be accessed, so immediately after the expression, the components inside the expression will be discarded. Which makes the expression so special.

Discussion @ times
--------------------------------
00:00 - Introduction.
00:34 - What is IIFE?
05:55 - Advantages of Using IIFE
06:13 - IIFE Prevent from Polluting Global Scope
12:59 - Prevents Memory Leakage.
16:48 - IIFE Create Modules in JavaScript.
19:16 - Minify the Source Code.
20:40 - Reduce Scope Lookups.
24:15 - Over Write Existing Function with IIFE.

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