Wednesday, November 4, 2015

Class 9: Hypertext Markup Language (HTML)


HTML stands for Hypertext Markup Language. It is a document format that structures text and data on the Internet using elements. It is the most common language used for creating standard web pages. HTML elements are formed by tags, which, in a basic sense, are made up of a single word (or letter) enclosed by a lesser-than sign and a greater-than sign - respectively from left-to-right. For example: <body> the body tag signifies the start of the content you want to display on a client's browser. To signify the end of an element, use an ending tag, which is just like a normal tag with a forward-slash before the tag name: </body> All but few elements must be closed in HTML.

Besides creating complete web pages, you may also use HTML code fragments to create specific elements within an existing page. For example, some blogs and discussion boards allow you to include HTML formatting in your posts or comments, enabling you to add emphasis to key words, embed links, create bullet-ed lists, or use whichever other HTML elements are permitted by the website's administrators. If you are a content contributor for your organization's website, the website designer may have set up a content management system that lets you add articles or page sections within a larger, existing HTML page structure that controls page layout and site navigation.

HTML is also used as the document format of offline (stored on your computer) help and documentation bundled with the applications installed on your computer. When you activate an application's help, typically via its "Help" menu or a question mark icon, the help content may appear within your web browser or a specialized help viewer. Email also uses HTML as the format of rich text messages that include links, stylized text, tables, and other elements that cannot be represented in plain text. However, most email applications do not allow you to edit the HTML directly, instead providing you with tools to create elements and generating the corresponding HTML internally.



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