study_html-css/HTML.txt at main · elif1305/study_html-css · GitHub

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####  What is the HTML

-> HTML stands for HyperText Markup Language.

-> HTML is a markup language used to create documents on the web.
It describes the structure and layout of a web page.

-> HTML was originally developed by Tim Berners-Lee while at CERN.

## HTML Page Structure

-> The <head> element contains metadata about the page.
HTML metadata is data about the HTML document and metadata is not displayed.
Metadata typically defines the document title, character set, styles, scripts,
and other meta information.

-> The <body> element indicates what should appear in the main browser window.

A Simple HTML Document
<!DOCTYPE html>
<html>
    <head>
        <title>Page Title</title>
    </head>
    <body>
        <h1>This is a Heading</h1>
        <p>This is a paragraph.</p>
        <!-- This is a comment-->
        <img src="https://JJJHJGJH" alt="APPLE" width="100%" height="auto" border="2px">
        <a href="http://google.com/" target="_blank">Welcome GOOGLE</a>
        <a href="http://google.com/" target="_blank"><img src="https://drive.google.com/open?id=1u4ycVa0PK" alt="A lighthouse" width="50%" height="auto"></a>
</body>
</html>

-> The alt attribute is used to provide an alternate text for an image in case
 the image fails to load on a web page or it is not supported by the browser, etc.
Moreover, Visually impaired users browse the web via screen reading software.
the screen reading software can read the text inside an alt attribute for impaired users.
We should add alt attribute to the image tag just like the src attribute.


interview

What do you mean by Tags?
In HTML page content is placed between the Tags which are basically responsible
for the formatting of the page. Tags are written between less than symbol (<) and
greater than (>) symbol.

What do you mean by HTML attribute?
Additional information given with the elements is known as an attribute. For Eg
<font size=”10” color=”red”>

What is SPAN tag is used for?
Span is used for formatting elements in the SPAN block. It is used to select inline text.

What is the XHTML?
XHTML means Extensible Hypertext Markup Language, which is basically
 a part of Family of XML markup language. It usually extends the most popularly
used HTML i.e. Hypertext Markup Language, the pages in which the web pages are formulated.

What does DOCTYPE mean?
DOCTYPE or Document Type Declaration is a type of instruction which usually works in
association with particular SGML or XML documents basically. Let us take an example
to understand it more thoroughly, for example, A Web page with a document type
definition i.e. DTD is the best to understand. In a well serialized and a proper form of
the document, It manifests and also the contribution of it is a lot as a short string of
 markup that usually conforms to a particular syntax.

What is Semantic Elements?
Semantic elements expresses its meaning for the web browser and developer.
Eg: Header , Footer

What are the key differences between HTML and HTML5?

HTML5 has made several steps forward compared to its previous versions. Notable changes include:
HTML5 supports video, graphics, and audio, whereas HTML only supports them through third-party extensions
HTML5 is mobile-friendly, whereas HTML is not
HTML5 is compatible with all major web browsers, whereas HTML is not
HTML5 offers several options for local storage, whereas HTML only offers cookies
HTML5 supports multi-threading, whereas HTML operates only in one thread


What are elements in HTML5?
Elements are components of HTML5 code that instruct the web browser how to
structure and interpret the HTML5 document. Typically, they encompass an
opening tag, a closing tag, and specified content between the opening and
closing tags, depending on the type of tag used.

5. What are attributes in HTML5?
Attributes are special properties or characteristics used within an element
to modify its behavior. For example, attributes can be used to specify the
 dimensions or positioning values of an image. Attributes are specified within
the opening tag and must be enclosed in quotation marks.

What are the key HTML5 page structure elements?
The most important HTML5 structure elements are:

<header>, containing the header or top of the page
<footer>, containing the footer or bottom of the page
<section>, containing one section that is thematically similar to other sections
<article>, containing standalone content
<nav>, containing the navigation functionality of the page
<aside>, containing secondary content

What types of graphics are supported by HTML5?
Unlike previous versions, HTML5 offers inbuilt graphics features.
The two types of graphics supported by HTML5 are:

SVG (Scalable Vector Graphics), used to create vector-based graphics, such as diagrams and icons
Canvas, used to draw graphics, such as shapes

How can a copyright symbol be added to the webpage using HTML5?
The ‘&copy’ code is used to generate the copyright symbol (©).
As a best practice, it should be accompanied by a year and the name of the organization.
To include copyright information in the footer of a web page, the code would look like this:
<footer> <small>&copy; Copyright Date, Organization Name</small> </footer>

What are the different types of storage in HTML5
HTML5 supports two types of web storage. These are:
sessionStorage: temporary storage available for the duration of the page session
localStorage: permanent storage available until data is deleted by the user