IIFE vs Module Pattern: Which is Better?

What is the difference between IIFE and Module Pattern in JavaScript?

IIFE stands for Immediately Invoked Function Expression, which runs as soon as it's defined. The Module Pattern, on the other hand, is used to create private and public members in a single object.

Can you give me an example of each?

Sure! An IIFE example: (function() { console.log('IIFE'); })(); And for the Module Pattern: const Module = (function() { let privateVar = 'I am private'; return { publicMethod: function() { console.log(privateVar); } }; })();.

When should I use one over the other?

Use IIFE for encapsulating code and avoiding global scope pollution. Use the Module Pattern when you need to expose certain methods while keeping others private.

Are there any performance differences between them?

Generally, the performance difference is negligible. However, the Module Pattern can be more efficient in managing larger codebases due to its structure.