// Tutorial //

Immediately-invoked function expressions

Published on January 27, 2016
Default avatar
By Alligator.io
Developer and author at DigitalOcean.
Immediately-invoked function expressions

While we believe that this content benefits our community, we have not yet thoroughly reviewed it. If you have any suggestions for improvements, please let us know by clicking the “report an issue“ button at the bottom of the tutorial.

Protect your global environment from being polluted by your code with immediately-invoked function expressions (IIFE). Code within an IIFE is within its own lexical scope:

(function() {
  // your stuff here
})();

Passing-In Variables

You can pass variables in the IIFE’s scope with something like this:

(function($) {
  // $ == jQuery;
})(jQuery);

Want to learn more? Join the DigitalOcean Community!

Join our DigitalOcean community of over a million developers for free! Get help and share knowledge in our Questions & Answers section, find tutorials and tools that will help you grow as a developer and scale your project or business, and subscribe to topics of interest.

Sign up
About the authors
Default avatar
Developer and author at DigitalOcean.

Still looking for an answer?

Was this helpful?
Leave a comment

This textbox defaults to using Markdown to format your answer.

You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!