HTML Interview Questions and Answers for 7 years experience
-
What is HTML and its purpose?
- Answer: HTML (HyperText Markup Language) is the foundation of all web pages. Its purpose is to structure content on a webpage using tags. These tags define elements like headings, paragraphs, images, links, and more, providing the basic framework for how a web page is displayed in a browser.
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Explain the difference between HTML4, HTML5, and XHTML.
- Answer: HTML4 was a widely used version but lacked many features. HTML5 introduced significant improvements, including semantic elements (like `
`, `
- Answer: HTML4 was a widely used version but lacked many features. HTML5 introduced significant improvements, including semantic elements (like `
-
What are semantic HTML elements and why are they important?
- Answer: Semantic HTML elements convey meaning about the content they contain, unlike presentational elements. Examples include `
`, `
- Answer: Semantic HTML elements convey meaning about the content they contain, unlike presentational elements. Examples include `
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Explain the `DOCTYPE` declaration.
- Answer: The `DOCTYPE` declaration tells the browser which version of HTML the document uses, enabling it to render the page correctly according to that specification. For example, `` signifies HTML5.
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Describe the difference between `
` and `` elements.- Answer: Both are generic container elements, but `` is a block-level element (takes up the full width available), while `` is an inline element (only takes up as much width as its content). `` is used for larger sections, and `` is used for smaller, inline content within a block.
How do you create a hyperlink in HTML?
- Answer: Using the `` tag. The `href` attribute specifies the URL: `Example`
Explain the use of different heading levels (`
` to `
`).
- Answer: Heading levels represent the hierarchical structure of a document's content. `
` is the main heading, `
` is a subheading under `
`, and so on. Using headings appropriately improves SEO and readability.
How do you embed an image in an HTML page?
- Answer: Using the `` tag. The `src` attribute specifies the image's URL, and the `alt` attribute provides alternative text for accessibility: ``
What are HTML5 multimedia elements?
- Answer: `
How do you create a table in HTML?
- Answer: Using `
`, `
` (table row), ` ` (table header), and ` ` (table data) elements. They are nested to create rows and columns. Explain the use of forms in HTML.
- Answer: Forms collect user input using elements like ``, `
What are HTML lists and their types?
- Answer: HTML lists are used to present items in a structured format. Types include ordered lists (`
- `, `
- `), unordered lists (`
- `, `
- `), and definition lists (`
- `, `
- `, `
- `).
- `), and definition lists (`
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How do you create comments in HTML?
- Answer: Using ``. Comments are ignored by the browser but are useful for developers to add notes and explanations within the code.
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Explain the concept of HTML entities.
- Answer: HTML entities represent special characters (like < for <, > for >, & for &) that might otherwise be interpreted as HTML tags. They ensure that these characters are displayed correctly.
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What is the role of the `lang` attribute?
- Answer: The `lang` attribute specifies the language of the HTML document or a specific element. It is crucial for accessibility and internationalization.
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Explain the difference between inline and block-level elements.
- Answer: Block-level elements (like `
`, `
`, ``) always start on a new line and take up the full width available. Inline elements (like ``, ``, ``) only take up as much width as needed and flow within a line.
How do you use CSS with HTML?
- Answer: CSS (Cascading Style Sheets) styles the HTML. You can link to an external CSS file using the `` tag in the ``, embed CSS within the `
- Answer: Block-level elements (like `
- `), unordered lists (`
- Answer: Both are generic container elements, but `