What is HTML?

HTML stands for Hyper-Text Markup Language.

HTML is the language of the Internet. HTML language is not dynamic, it is static. However dynamics can be added to web pages using JavaScript. JavaScript is a programming language for the web.

HTML is rich. It can contain images, forms, links to other documents.

HTML consists of tags, attributes and elements.

Tags are surrounded by left and right angle brackets. Many of the tags have both opening and closing tag. For example paragraph tag will have tag indicating where paragraph starts and it will have closing tag indicating where this paragraph ends. End HTML tag contains forward slash.

HTML attributes specify extra information about this element. HTML attributes are included in the opening HTML tag. It is a good practice to wrap attribute values in double quotation marks.

HTML element is both a tag and content within that tag.

HTML elements have parent/child relationship. HTML element that includes another HTML element is referred as a parent.

Opening tag for the HTML content is <body> tag, it is a parent tag for all other HTML tags.

HTML elements that are not contained within each other, but follow each other on the same level are siblings.

It is possible to specify look of HTML elements inline, however it is the best practice to use standalone CSS file to list design of HTML elements. CSS stands for Cascading Style Sheets. There maybe multiple CSS files included in a single HTML file,

CSS file will specify design of HTML elements. 

YouTube video



Comments

Post a Comment

Popular posts from this blog

Absolute and relative path in HTML pages

HTML documents can have relative or absolute links to other web pages. Relative links keeps a visitor on the same web site. Relative links are pointers to other web pages on the same web site. They just contain this page filename. Absolute links on other hand contain full path including protocol and domain name to access the page. Absolute links can point to the same web site or they can point to a different web site.
Read more

Errors

It is a good idea to send errors in production environment to error log. Errors may contain sensitive information. Even so errors maybe helpful to development team or to QA team, errors need to be suppressed in production environment for viewing by everyone. Errors are good way to troubleshoot an issue therefore only trusted people can have access to this information. If not a trusted person get an access to this information, this information maybe used against the company and for a personal benefit. What to do in a case when there are more servers than one? Even so it is possible to inspect the log files in a single server, however it is impossible to do so when there is more than one server is available and web traffic is redirected to a different server each time. Log aggregation is needed in this case. All of the logs will be send to a central location. Logs may contain sensitive information. Please consult your company lawyer of how long logs can be stored, because logs can be use...
Read more

goto PHP operator

goto operator will skip execution of code and continue execution of a code that follows a label to which goto operator points to. If code has many goto operators, than this code probably needs a revision. It is possible to write code that executes without goto operators.
Read more