Difference between revisions of "Immediately-invoked function expression"
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| − | An '''immediately-invoked function expression''' (or '''IIFE''', pronounced "iffy") is a [[JavaScript]] [[design pattern]] which produces a [[Scope (computer science)|lexical scope]] using JavaScript's [[ | + | An '''immediately-invoked function expression''' (or '''IIFE''', pronounced "iffy") is a [[JavaScript]] [[design pattern]] which produces a [[Scope (computer science)|lexical scope]] using JavaScript's [[Function scope (computer science)|function scoping]]. |
== Description == | == Description == | ||
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== See also == | == See also == | ||
| + | * [[Function scope (computer science)]] | ||
* [[JavaScript]] | * [[JavaScript]] | ||
* [[Scope (computer science)]] | * [[Scope (computer science)]] | ||
Revision as of 08:06, 26 August 2016
An immediately-invoked function expression (or IIFE, pronounced "iffy") is a JavaScript design pattern which produces a lexical scope using JavaScript's function scoping.
Description
Immediately-invoked function expressions can be used to:
- Avoid variable hoisting from within blocks
- Protect against polluting the global environment
- Simultaneously allow public access to methods while retaining privacy for variables defined within the function
This pattern has been referred to as a self-executing anonymous function; Ben Alman introduced "IIFE" as a more semantically accurate term for the pattern, shortly after its discussion arose on comp.lang.javascript.
