Immediately invoked function expression information
Javascript design pattern
An immediately invoked function expression (or IIFE, pronounced "iffy", IPA /ˈɪf.i/) is a programming language idiom which produces a lexical scope using function scoping. It was popular in JavaScript[1] as a method to support modular programming before the introduction of more standardized solutions such as CommonJS and ES modules.[2]
Immediately invoked function expressions can be used to avoid variable hoisting from within blocks, protect against polluting the global environment and simultaneously allow public access to methods while retaining privacy for variables defined within the function.
^Alman, Ben (15 November 2010). "Immediately Invoked Function Expressions". Archived from the original on 1 December 2017. Retrieved 18 January 2019.
^McGinnis, Tyler (15 January 2019). "JavaScript Modules: From IIFEs to CommonJS to ES6 Modules". ui.dev. Retrieved 18 August 2021.
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