Sum some Design Patterns Technics in Javascript

iife.md

IIFE

(function () {
   console.log('bonjour')
}) ();

Named IIFE

(showName = function (name) {
    if (name && name === 'toto'){
        console.log('bonjour ', name)
    } else {
        console.log('qui êtes vous ?')
    }
}) ();

You can use Named IIFE further in your code

showName('toto')