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HTTP/2 302 server: nginx date: Tue, 23 Dec 2025 05:21:22 GMT content-type: text/plain; charset=utf-8 content-length: 0 x-archive-redirect-reason: found capture at 20100121051049 location: https://web.archive.org/web/20100121051049/https://api.jquery.com/jQuery.noop/ server-timing: captures_list;dur=0.690277, exclusion.robots;dur=0.066548, exclusion.robots.policy;dur=0.052751, esindex;dur=0.016539, cdx.remote;dur=6.852914, LoadShardBlock;dur=168.384614, PetaboxLoader3.datanode;dur=76.521317, PetaboxLoader3.resolve;dur=18.602633 x-app-server: wwwb-app241-dc8 x-ts: 302 x-tr: 211 server-timing: TR;dur=0,Tw;dur=0,Tc;dur=0 set-cookie: wb-p-SERVER=wwwb-app241; path=/ x-location: All x-as: 14061 x-rl: 0 x-na: 0 x-page-cache: MISS server-timing: MISS x-nid: DigitalOcean referrer-policy: no-referrer-when-downgrade permissions-policy: interest-cohort=() HTTP/2 200 server: nginx date: Tue, 23 Dec 2025 05:21:23 GMT content-type: text/html; charset=UTF-8 x-archive-orig-date: Thu, 21 Jan 2010 05:10:48 GMT x-archive-orig-server: Apache/2.2.3 (CentOS) x-archive-orig-last-modified: Thu, 21 Jan 2010 04:41:54 GMT x-archive-orig-etag: "631072c-766d-527f6880" x-archive-orig-accept-ranges: bytes x-archive-orig-content-length: 30317 x-archive-orig-cache-control: max-age=300, must-revalidate x-archive-orig-expires: Thu, 21 Jan 2010 05:15:48 GMT x-archive-orig-vary: Accept-Encoding,Cookie x-archive-orig-connection: close x-archive-guessed-content-type: text/html x-archive-guessed-charset: utf-8 memento-datetime: Thu, 21 Jan 2010 05:10:49 GMT link: ; rel="original", ; rel="timemap"; type="application/link-format", ; rel="timegate" content-security-policy: default-src 'self' 'unsafe-eval' 'unsafe-inline' data: blob: archive.org web.archive.org web-static.archive.org wayback-api.archive.org athena.archive.org analytics.archive.org pragma.archivelab.org wwwb-events.archive.org x-archive-src: 52_13_20100121032916_crawl102-c/52_13_20100121051020_crawl103.arc.gz server-timing: captures_list;dur=1.512280, exclusion.robots;dur=0.045768, exclusion.robots.policy;dur=0.027279, esindex;dur=0.047060, cdx.remote;dur=6.005911, LoadShardBlock;dur=135.258630, PetaboxLoader3.datanode;dur=123.882351, PetaboxLoader3.resolve;dur=161.949716, load_resource;dur=177.997072 x-app-server: wwwb-app241-dc8 x-ts: 200 x-tr: 416 server-timing: TR;dur=0,Tw;dur=0,Tc;dur=0 x-location: All x-as: 14061 x-rl: 0 x-na: 0 x-page-cache: MISS server-timing: MISS x-nid: DigitalOcean referrer-policy: no-referrer-when-downgrade permissions-policy: interest-cohort=() content-encoding: gzip jQuery.noop() – jQuery API

jQuery API

jQuery.noop()

Categories: Utilities

jQuery.noop() Returns: Function

Description: An empty function.

version added: 1.4jQuery.noop()

You can use this empty function when you wish to pass around a function that will do nothing.

This is useful for plugin authors who offer optional callbacks; in the case that no callback is given, something like jQuery.noop could execute.

Comments

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joemccann

Here's where it may be useful, or at least my first usage:

$('a').bind('click', function(){ var href = $(this).attr('href'); // Make bookmarkable. !location.hash ? location.href += href : $.noop(); return false; });

And your html would be an anchor tag where the href was equal to "#foo".

Karl Swedberg

$.noop returns the sound of one hand clapping.

xr

doesn't null works??
null不行吗?????

SmokeyBones

i want "foo" "foobar"

human3rror

AHAHAHHAAH

Marco Rogers

It's not overly useful. But typing $.noop is 6 chars shorter than function(){}. Also if you use this everywhere instead of creating new, anonymous, empty functions, you'll slightly cut down on memory.

serkanyersen

It's like Prototype.K shorthand for function(){}

it can be useful for validating callbacks such as:

function myFunc(num, callback){ var x = num * 100; # run callback if provided (callback || $.noop)( x ); return x; }

David Pio

I think it is used for functions that require a callback as a parameter..but you don't want to do anything in a callback..rather than creating empty functions all the time..do this..

JustAJoke

I Guess is for compatibility with NaDa

https://www.bernardbelanger.com/computing/NaDa/i...

WildeMan

Ok.. ok... ok this maybe a noobish type question, but what is this useful?

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jQuery API

jQuery.noop()

jQuery.noop() Returns: Function

version added: 1.4jQuery.noop()

Comments

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