How do I implement IIFE in JavaScript?

How do I implement IIFE in JavaScript?

An IIFE, or Immediately Invoked Function Expression, is a function that runs as soon as it is defined. You can implement it like this:

(function() {
    // Your code here
})();

This creates a function and immediately executes it.

What are the benefits of using IIFE?

IIFE helps in creating a private scope, avoiding global variable pollution, and can also be used for module pattern implementation.

Can you show me an example with parameters?

Sure! Here's an example of an IIFE with parameters:

(function(name) {
    console.log('Hello, ' + name + '!');
})('Alice');

This will output 'Hello, Alice!'.

Are there any downsides to using IIFE?

One downside is that IIFEs can make debugging harder since the variables inside are not accessible from the outside scope. Also, if overused, they can lead to less readable code.