What is jQuery ?

What is jQuery ?

jQuery is a lightweight, "write less, do more", JavaScript library.

The purpose of jQuery is to make it much easier to use JavaScript on your website.

jQuery takes a lot of common tasks that require many lines of JavaScript code to accomplish, and wraps them into methods that you can call with a single line of code.

jQuery also simplifies a lot of the complicated things from JavaScript, like AJAX calls and DOM manipulation.

The jQuery library contains the following features:

• HTML/DOM manipulation
• CSS manipulation
• HTML event methods
• Effects and animations
• AJAX
• Utilities

Why jQuery?

There are lots of other JavaScript frameworks out there, but jQuery seems to be the most popular, and also the most extendable.

Many of the biggest companies on the Web use jQuery, such as:

• Google
• Microsoft
• IBM
• Netflix

HTML TAGS EXAMPLES

HTML TAGS EXAMPLES

1. Heading tags 

                               Heading tags is use for creating heading in pages. There are six heading tags. For example.
<H1>   Head  1   </H1>
<H2>   Head  1   </H2>
<H3>   Head  1   </H3>
<H4>   Head  1   </H4>
<H5>   Head  1   </H5>
<H6>   Head  1   </H6>

   2. Paragrah

                            Paragraph tag is use for writing paragraph.

                              For example.

<p> There is a paragraph </p>

   3. Link tag

                         Link tag use for link one page to another page. In link tag we use a attribute (href). For example.

<a href="http://www.google.com"> Google </a>

  

    4. Image tag 

                             Image tag is use for show image in web page. In image tag we us attribute of src. For image tag we know the name and extantion of image.img tag we also use height and width attributes. For example.

   <img src="Google.png" height="100" width="100

">

HTML Formatting Elements

Formatting Elements

Formatting elements were designed to display special types of text:

• <b> - Bold text
• <strong> - Important text
• <i> - Italic text
• <em> - Emphasized text
• <mark> - Marked text
• <small> - Small text
• <del> - Deleted text
• <ins> - Inserted text
• <sub> - Subscript text
• <sup> - Superscript text

These are simple uses in HTML.

RGB (Red, Green, Blue)

Css Color

Colors in CSS are most often specified by:

• a valid color name - like "red"
• an RGB value - like "rgb(255, 0, 0)"
• a HEX value - like "#ff0000"

Note: Color names are case-insensitive: "Red" is the same as "red" or "RED".

RGB (Red, Green, Blue)

RGB color values can be specified using this formula: rgb(red, green, blue).

Each parameter (red, green, blue) defines the intensity of the color between 0 and 255.

For example, rgb(255,0,0) is displayed as red, because red is set to its highest value (255) and the others are set to 0. Experiment by mixing the RGB values

Hexadecimal Colors

RGB values can also be specified using hexadecimal color values in the form: #RRGGBB, where RR (red), GG (green) and BB (blue) are hexadecimal values between 00 and FF

(same as decimal 0-255).

For example, #FF0000 is displayed as red, because red is set to its highest value (FF) and the others are set to the lowest value (00). 

Note: HEX values are case-insensitive: "#ff0000" is the same as "FF0000".
this is very important for css because color are use in css many times.
therefore read this chapter two three time for making color schemes ................

jquery

JQUERY

jQuery is a cross-platform JavaScript library designed to simplify the client-side scripting of HTML. jQuery is the most popular JavaScript library in use today, with installation on 65% of the top 10 million highest-trafficked sites on the Web. jQuery is free, open-source software licensed under the MIT License.

jQuery's syntax is designed to make it easier to navigate a document, select DOM elements, create animations, handle events, and develop Ajax applications. jQuery also provides capabilities for developers to create plug-ins on top of the JavaScript library. This enables developers to create abstractions for low-level interaction and animation, advanced effects and high-level, themeable widgets. The modular approach to the jQuery library allows the creation of powerful dynamic web pages and Web applications.

The set of jQuery core features—DOM element selections, traversal and manipulation—enabled by its selector engine(named "Sizzle" from v1.3), created a new "programming style", fusing algorithms and DOM data structures. This style influenced the architecture of other JavaScript frameworks like YUI v3 and Dojo, later stimulating the creation of the standard Selectors API.

Microsoft and Nokia bundle jQuery on their platforms. Microsoft includes it with Visual Studio for use within Microsoft's ASP.NET AJAX and ASP.NET MVC frameworks while Nokia has integrated it into the Web Run-Time widget development platform. jQuery has also been used in MediaWiki since version 1.16.