NO LONGER UPDATED: July 2012. This page is no longer indexed prominently in Google, so keeping it up-to-date is not much use to anyone. So consider updates finished. Try this link instead
SUMMARY: Get the latest jQuery here:
To include in your web app, cut-and-paste this:
You can also cut-and-paste one of the following to suck it down:
- curl -O http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js
- wget http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js
With the release of JQuery 1.3, I thought I’d mention the Google JQuery CDN, one of several libraries you can yoink from Google’s Ajax Libraries API. Instead of hosting your own JQuery, you just point your web app to Google’s JQuery:
Google’s documentation would lead you to believe you need to import Google’s library, and then call google.load(), but it’s unnecessary; just pull in the script directly using the link above. The link is officially documented, so it’s going to stay put for a very, very, long time.
There are also other libraries available on Google’s CDN and elsewhere.
Great. So when not to use a CDN?
Obviously, whenever you’re working offline. This sometimes occurs as a developer working locally, and with Single Page Applications like TiddlyWiki. (The next “major minor” release of TiddlyWiki, v2.5 is JQuery-powered.)
Another case would be when you can deliver faster than the CDN, and care about that. This might be the case when all users are close to the server. Even then, though, you won’t get the local cache benefit from users who already have the JQuery.
For many websites, though, it’s great that we can use a reliable CDN like Google’s to fetch JQuery fast.
Update (erm, mid-2009 sometime): Montana left a comment pointing out you can also drop off the minor numbers to get the latest version. So, for the latest JQuery (since 2.0 doesn’t exist), use http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js. Or, for the latest in the old 1.2 series: http://ajax.googleapis.com/ajax/libs/jquery/1.2/jquery.min.js.
Update (19-March-2010): Scratch that. @premasagar pointed out to me that the link to just the latest version (until 2.0, i.e. http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js) as opposed to a specific version (http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js) is undesirable; Google will expire the “latest” content after one hour, as opposed to one year for a specific version. This is for good reason of course, as the latest version is subject to change. For this reason, I’ve reverted the link at top to be a specific version, which I’ll endeavour to update upon each new release.