Share of Websites that Use jQuery
Pingdom reports that the JavaScript library jQuery is used by over 54% of the top ten thousand sites in the world. The numbers drop when we get into the top 100, they suggest, because Google owns about 20% of those (eg., Google and all its country specific flavors, YouTube, Blogger, etc.) and those sites don’t use jQuery.
Note that Google, Microsoft and Media Temple all host jQuery for public use on their respective CDNs. The upside is that when you use these resources — instead of hosting jQuery on your own — it’s often likely that the scripts are already cached in a visitor’s browser so site performance will quicken.
Pingdom Blog, The Web loves jQuery, and here are the numbers to prove it. 

Share of Websites that Use jQuery

Pingdom reports that the JavaScript library jQuery is used by over 54% of the top ten thousand sites in the world. The numbers drop when we get into the top 100, they suggest, because Google owns about 20% of those (eg., Google and all its country specific flavors, YouTube, Blogger, etc.) and those sites don’t use jQuery.

Note that Google, Microsoft and Media Temple all host jQuery for public use on their respective CDNs. The upside is that when you use these resources — instead of hosting jQuery on your own — it’s often likely that the scripts are already cached in a visitor’s browser so site performance will quicken.

Pingdom Blog, The Web loves jQuery, and here are the numbers to prove it

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