This is a simple yet very useful and powerful technique. Using different CSS rules in JavaScript or jQuery enabled browsers lets you customize your website style for JS enabled and disabled browsers using only CSS. Thus you separate concerns of styling and business logic into CSS and javascript. This lets you concentrate on your goals and not styling in your javascript code for example. All you
Facebook (stylized facebook ) is a social network service and website launched in February 2004, operated and privately owned by Facebook, Inc. [ 1 ] As of January 2011 [update] , Facebook has more than 600 million active users. [ 5 ] [ 6 ] Users may create a personal profile, add other users as friends, and exchange messages, including automatic notifications when they update their profile. Additionally, users may join common interest user groups, organized by workplace, school, or college, or other characteristics. The name of the service stems from the colloquial name for the book given to students at the start of the academic year by university administrations in the USA to help students get to know each other better. Facebook allows anyone who declares themselves to be at least 13 years old to become a registered user of the website. Facebook was founded by Mark Zuckerberg with his college roommates and fellow computer science students Eduardo Saverin , Dusti...
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