Javascript
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Modernizr
Taking advantage of the new capabilities of HTML5 and CSS3 can mean sacrificing control over the experience in older browsers. Modernizr 2 is your starting point for making the best websites and applications that work exactly right no matter what browser or device your visitors use. Thanks to the new Media Query tests and built-in YepNope.js micro-library as Modernizr.load() , you can now combine feature detection with media queries and conditional resource loading.JavaScript AJAX
JSON - Wikipedia
/ ˈ dʒ eɪ s ən / ), or JavaScript Object Notation , is a lightweight text-based open standard designed for human-readable data interchange. It is derived from the JavaScript scripting language for representing simple data structures and associative arrays , called objects. Despite its relationship to JavaScript, it is language-independent, with parsers available for many languages.
Microsoft and Nokia have announced plans to bundle jQuery on their platforms, [ 5 ] Microsoft is adopting it initially within Visual Studio [ 6 ] for use within Microsoft's ASP.NET AJAX framework and ASP.NET MVC Framework while Nokia has integrated it into their Web Run-Time widget development platform. [ 7 ] jQuery has also been used in MediaWiki since version 1.16. [ 8 ]
jQuery - Wikipedia