HTML Interview Questions: HyperText Markup Language, or HTML, is a markup language used to create web pages. The term HTML stands for Hypertext Markup Language. Markup language defines the text document inside the tag that defines the structure of web pages, and hypertext establishes the link between the websites. The design of web pages displayed on the World Wide Web is created using HTML (www). It includes Tags and Attributes applied to the web pages’ format. Additionally, we can use hyperlinks to connect several pages.
The below contains the list of the top most common & frequently asked HTML interview questions with explanations.
What is HTML?
HyperText Markup Language is known as HTML. A markup language is used to create web pages with it. Hypertext Markup Language (HTML) combines both markup and hypertext. Web page links are described in hypertext. The markup language defines the text document within the tag that specifies the structure of web pages. As a result, HTML is utilised in web development to structure websites.
Difference between HTML and XHTML
S.No. |
HTML |
XHTML |
|---|---|---|
| 1. | HTML stands for Hypertext Markup Language. | XHTML stands for Extensible Hypertext Markup Language. |
| 2. | Tim Berners-Lee developed it. | It was developed by W3C, i.e. World Wide Web Consortium. |
| 3. | It was developed in 1991. | It was released in 2000. |
| 4. | It is extended from SGML. | It is extended from XML and HTML. |
| 5. | The format is a document file format. | The format is a markup language. |
| 6. | All tags and attributes are not necessarily the lower or upper case. | In this, every tag and attribute should be in lower case. |
| 7. | Doctype is not necessary to write at the top. | Doctype is very necessary to write at the top of the file. |
| 8. | It is not necessary to close the tags in the order they are opened. | It is necessary to close the tags in the order they are opened. |
| 9. | While using the attributes, it is not necessary to mention quotes. For e.g. <Geeks>. | While using the attributes, it is mandatory to mention quotes, e.g. <Geeks=” GFG”>. |
| 10. | Filename extension used are .html, .htm. | Filename extension are .xhtml, .xht, .xml. |
Which markup languages are there, and what are they used for?
- HTML: Hypertext Markup Language
- KML: Key whole Markup Language
- MathML: Mathematical Markup Language
- SGML: Standard Generalized Markup Language
- XHTML: eXtensible Hypertext Markup Language
- XML: eXtensible Markup Language
What is the most recent HTML version?
HTML 5 is the fifth and current version of HTML.
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What is the!DOCTYPE?
A doctype, also known as a document type declaration, is a directive that informs the web browser of the markup language used to create the current page. The doctype, which is not an element or tag, tells the browser of the HTML or other markup language version or standard used in the page. The DOCTYPE for HTML5 can be written as follows and is case-insensitive:
<!DOCTYPE html>
The beginning and finish of an HTML element are known as the tag. They have symbols at the start and the finish. Tags are defined as the text contained between < and >.
Example: <b> </b>
HTML elements: The contents of elements are encased within tags. They are made up of some form of expression or structure. A start tag, content, and an end tag are typically present.
Example: <b>This is the content.</b>
HTML defines headings at six different levels. H1 is the heading element with the highest level, followed by H2, H3, H4, H5, and H6, with H6 having the lowest level.
Importance of the heading
- Search engines use headings to index the webpage’s structure and content.
- Headings are used to draw attention to critical points.
- They give us helpful information and describe the document’s structure.
