HTML5 & CSS
HTML5 is a core technology markup language of the Internet used for structuring and presenting content for the World Wide Web. HTML5 adds many new syntactic features. These include the new video, audio and canvas elements, as well as the integration of scalable vector graphics (SVG) content (replacing generic tags), and MathML for mathematical formulas. These features are designed to make it easy to include and handle multimedia and graphical content on the web without having to resort to proprietary plugins and APIs.
PHP
PHP is a widely-used general-purpose scripting language that is especially suited for web development and can be embedded into HTML. PHP is a powerful cross platform server side script language. It is a full featured programming language capable of managing huge database driven online environments. Using PHP you can query databases, create images, read & write files, talk to remote servers - the possibilities are endless.
PHP's language syntax is similar to C's and Perl's. It generally runs on a web server like Apache which is configured to take PHP code as input and create web page content as output. It can be deployed on most web servers and on almost every operating system and platform free of charge. PHP is installed on more than 20 million websites and 1 million web servers.
MySQL
MySQL is one of the most popular open source database management system recognized for its speed and reliability. It is commonly used with web pages. More than 11 million Websites are built around MySQL.
Current MySQL customers such as eBay, Google, Twitter, Yahoo, Facebook, and YouTube, SlashDot, LiveJournal are perfect examples of how MySQL is used to organize and store multiple databases that can be quickly accessed by millions of people at once.
JAVASCRIPT & JSON
Javascript is used for validation of WEB FORM input values to make sure that they will be accepted before they are submitted to the server. JavaScript can put dynamic text into an HTML page . It can respond to user actions quickly, making an application feel more responsive. Furthermore, JavaScript code can detect user actions which HTML alone cannot, such as individual keystrokes. Applications such as GMail take advantage of this: much of the user-interface logic is written in JavaScript. The wider trend of AJAX programming also exploits this strength.JavaScript can be used to detect the visitor's browser.
Salient Features
JavaScript was designed to add interactivity to HTML pages.
JavaScript is a scripting language.
JavaScript is usually embedded directly into HTML pages.
JavaScript is an interpreted language (means that scripts execute without preliminary compilation).
Everyone can use JavaScript without purchasing a license
Jquery
jQuery is a fast, small, and feature-rich JavaScript library. It makes things like HTML document traversal and manipulation, event handling, animation, and Ajax much simpler with an easy-to-use API that works across a multitude of browsers. With a combination of versatility and extensibility, jQuery has changed the way that millions of people write JavaScript.