Top 50+ HTML Interview Questions & Answers To Get Your Dream Job
HTML is the most commonly used programming language in web development with statistics showing that 95.1% of websites are built using it. HTML5 offers new features while maintaining backward compatibility with earlier versions of HTML. CSS are style sheets that control how different elements appear when displayed onscreen.
If you’re hoping to start a career here, you must prepare well by seeing interview questions related to HTML or CSS coding. Here we’ve listed some tips and CSS and HTML interview questions you should consider looking over beforehand.
Basic-Level HTML Interview Questions for Freshers
Are you a fresher thinking of what HTML interview questions to expect? Here are some of the best HTML interview questions and answers for freshers:
1. What is HTML?
Hypertext Markup Language (HTML) is the standard markup language used to create web pages and structure content for display on a webpage, as well as formatting text such as font type and sizes, lists, and more.
2. How do you insert a copyright symbol in an HTML document?
The copyright symbol can be inserted using either the © or © within your HTML code. Both result in displaying “©” when shown through a browser window. To learn more about how to better prepare for your interview, We suggest you take this course on Interviews Training.
3. What are some common list types supported by HTML?
Three primary types of lists have been provided since its formation.
- Unordered List
- Ordered Lists
- Description/Definition lists
Enroll in our Full stack developer course with placement and Get a confirmed ₹35,000 total stipend.
4. Can You Define the list types in HTML?
The three main types of lists used in HTML are:
- Ordered List, which uses a <ol> tag and displays its elements as numbered items;
- Unordered List, which uses a <ul> tag and displays them as bulleted points;
- Definition Lists (<dl>) that use both the opening and closing tags (i.e.,<dt></dt>, and<dd></dd>) to display terms/words followed by their definitions like those found in the dictionary pages.
5. Are there certain standards that need to be followed while coding with Html?
Yes! Many so-called organizations like W3C (World Wide Web Consortium) develop these guidelines along with industry best practices to ensure compatibility across all browsers platforms making it even easier for developers to write codes compliantly following given set rules over time.
6. What are some advantages of using HTML over traditional website development tools like Dreamweaver?
Some main advantages that come with coding in HTML include:
- Making sites appear faster since there’s no need for long loading times;
- It also makes updates simple because all you have to do is update certain elements instead of recording everything from scratch each time something changes;
- Lastly, when coded properly by a good developer it ensures cross-browser compatibility so your site looks great. Regardless if someone views them in Chrome vs Firefox, etc.
7. What are HTML tags?
HTML tags use symbols like <> to display elements such as text or images in a webpage formatted way. Not every tag requires both an opening and closing tag though. One example is when adding an image with “<img>” no separate close-tag is needed at all. Additional properties can be added after each name contained within brackets which we call attributes.
8. What are HTML Attributes?
Attributes are properties added onto existing HTML tags within angle brackets (<>). They modify how the original code behaves or appears when viewed from a browser window
9. What is Marquee in HTML?
Marquee allows words or pictures to move across the page either horizontally, vertically, or up & down direction automatically. This complements aesthetic presentation using </marquee> tags.
10. What is formatting in HTML?
Formatting in HTML refers to the process of applying various styles, such as bolding or italicizing text, creating lists and headings on a web page using tags like <b>, <i>,<ul>, etc., to make it more visually appealing and easier to read.
11. How do you create a hyperlink in HTML?
You can use the <a> element to place links on your page, and it should be written like this:
<a href="http://www.examplepage.com/">Link text</a>The ‘href’ attribute specifies where the link will lead when clicked on, and everything between the opening > tag and closing </a> is what shows up for users as being clickable.
12. How do you align list elements in an HTML file?
Aligning each nested or subordinate element within a parent element can be accomplished through indentation using white space characters such as tabs (\t) or spaces inside our editing documents’ text files for quick reference when coding out complex ordered formats.
13. Why do we use a style sheet in HTML?
Style sheets, or Cascading Style Sheets (CSS) are used to provide webpages with consistent formatting and styling options that can be easily modified at once from a single file bound directly into the page code. This method of keeping all website design elements organized makes websites look more visually pleasing while also making it easy for developers to maintain them.
14. What is an element in HTML?
An HTML element is a set of tags (<>), usually consisting of opening and closing beginning/end tags that convey specific instructions to browsers on how the page’s elements should be displayed or behave. These include titles, headings, images, etc., as well as items such as code snippets that enable client-side scripting languages like JavaScripts (JS) bits inside webpages.
15. What is the difference between HTML and CSS?
HTML stands for Hypertext Markup Language, while CSS stands for Cascading Style Sheets. These together are what make up websites today by laying out content structure with one platform. Before styling it into an SEO-optimized and aesthetically pleasing page with another version respectively. Allowing users to experience consumable website interactivity at its fullest potential.
16. Are the HTML tags and elements the same thing?
No, they’re not the same reason being html doesn’t define appearance but rather just displays data contents whereas CSS style sheets add much-needed design value aesthetic feel visually appealing look
17. How do you use comments in HTML?
Comments are written using <!– –> syntax within an HTML document which helps describe or annotate various parts of your webpage. For example:
<!- This section contains header information ->Anything that comes between these symbols will be ignored by browsers when rendering pages.
18. What are some common tags used in text formatting with HTML?
Commonly Used Tags include h1 -h6(for headings), p (paragraph), em/strong, span, blockquote, etc.
19. What attribute must an anchor element have so it functions correctly?
An Anchor Element needs a href=”URL” attribute so it can link one page /document with another resource. For example:
<a href="http://wwwdifferenthost/page">Go</a> 20. How do you define multiple classes together for specific elements such as divs & spans?
You can assign multiple classes using the class attribute. For example,
class= “one two three” This means all three classes are assigned to that particular element.
Advanced-Level HTML Interview Questions and Answers for Experienced Professionals
Here are some advanced HTML interview questions for experienced professionals along with their answers:
21. What are the benefits of using void elements in HTML?
The benefit of using void elements in HTML is that they do not require a closing tag, which can help make web pages more efficient and load faster.
22. What does collapsing white space involve when working with HTML?
Collapsing white space involves removing unnecessary spaces between HTML tags to reduce the size of web pages and improve their loading speed.
23. Could you explain what an “HTML Entity” entails?
An “HTML Entity” refers to special characters used to represent text or symbols on websites that cannot be typed from a keyboard such as foreign language characters or special symbols like © for copyright protection marks etc.
24. What is an image map?
An image map in HTML is an effective way of linking different web pages by using a single image. It allows you to define certain shapes within the images that will be made part of the mapping process.
25. What HTML code do we need to use to create a hyperlink?
We can create hyperlinks with HTML by using anchor tags, which are represented as <a>. Hyperlinks can also be added to images if desired.
26. How can one insert a copyright symbol in HTML?
The easiest way to add a copyright symbol would be to use either © or © within an HTML file.
27. Could you explain what white space means when referring to HTML code?
White space refers to any sequence of empty characters that are used for spacing, indentation, or organizational purposes in an HTML document. The benefit of using white spaces helps browsers merge multiple sequences into single ones for easy readability and better organization of content tags etc.
28. Is there any way we can create several links which lead us directly toward certain sections on the same web page with HTML?
Yes, we can create multiple links which lead to certain sections on the same web page by using <a> tags along with referencing through # symbols. This will allow us to easily navigate and jump between different locations within a single HTML webpage.
29. How does the styling of <strong>,<b> tags differ from that of <em>,<i>?
The effect on a normal webpage for both sets of tags is the same, bold (<b>) and italic(<i>) are font styles that only add more ink to text without saying anything about its importance. Whereas strong (</strong>) and emphasis(</em) indicate its content has higher value or significance compared to the rest of the document.
30. What purpose do the HTML elements- ‘head’ & ‘body’ serve when coding webpages?
The head tag in HTML contains coding information that tells browsers how to display the contents of a webpage. It also includes other data such as meta and link tags. The body section holds all visible content on a website, like images, audio files, videos, etc., which are necessary for viewing an email message properly.
31. Is nesting multiple HTML pages possible?
Yes, it is possible to embed a web page within another web page using HTML iframe tags.
32. Can you explain what Cell padding & Cell spacing differences mean practically?
Cell padding is the space between a cell wall and its contents. It determines how much space there is between an element such as text or pictures within the table cells themselves. Cell spacing, on the other hand, defines how far apart individual tables are from each other when they’re next to one another in your document layout. If you have multiple tables side-by-side then increasing this value will increase the amount of separation seen horizontally across them all.
33. How can we club two or more rows or columns into a single row or column in an HTML table?
To club or merge two or more rows or columns into a single row or column in an HTML table, you can use the colspan and rowspan attributes of the <td> tag. The colspan attribute is used to merge multiple columns while the rowspan attribute is used for merging multiple rows.
34. Can an inline element be converted into a block-level element?
Yes, it is possible to change an inline element into a block-level element. This can be done by setting the CSS “display” property of the inline element to either “block” or another value that renders as a block-level box like “table”.
35. What are the distinctions between “display: none” and “visibility: hidden” as part of attributes for an HTML element?
When employing the attribute ” visibility: hidden” to an HTML element, it will be invisible on the webpage but still take up space. On the contrary, if we utilize ” display: none”, then not only is that particular element concealed from view but also does not occupy any space in your page layout.
7 Must-Know HTML 5 Interview Questions and Answers
Here are some of the best HTML 5 interview questions and answers to expect in an interview:
36. What benefits does HTML5 offer compared to its earlier versions?
Some advantages of HTML5 compared to previous versions include:
- Improved multimedia support.
- Ability to store offline data using SQL databases and application cache.
- Running Javascript in the background.
- New Semantic tags and form control tags.
- As well as being able to draw shapes like rectangles, circles, and triangles.
37. What distinguishes the <figure> tag from the <img> tag?
The <figure> element denotes self-contained content such as diagrams, images, or snippets of code to semantically organize an image along with its caption. In contrast, the purpose of a <img> tag is for embedding pictures in HTML5 documents.
38. What has changed about how the <header> and <h1> tags are used in HTML5?
In HTML5, the <header> tag specifies the header section of a webpage. Unlike earlier versions where there was one single<h1> element for an entire page, this now defines a header inside individual sections such as an article or section. The HTML5 specification stipulates that each corresponding <header> must contain at least one <h1>.
39. Do the <datalist> tag and <select> tag have the same function?
No, the <datalist> and <select> tags are not the same. The <select> tag requires a user to make an exact selection from a predetermined list of options, whereas, with the combination of the input and data list tags, users can select one of several predefined suggestions or enter their unique value.
40. What do we mean by Semantic Elements?
Semantic elements are HTML tags that provide meaning and context to the content on a webpage. Examples of these include <form>, <table>, <article>, and <figure> – all of which inform the browser or developer about what kind of information is being conveyed.
41. What is the contrast between the <meter> tag and the <progress> tag?
The main difference between the two tags is that an <progress> element should be used when we need to show progress towards completing a task, while if there are just scalar measurements within an established range or fraction value then it’s better to use the <meter>. Additionally, extra attributes such as ‘form’, ‘low’, ‘high’, ‘min’, etc. can be specified for a < meter >tag.
42. Can HTML5 be used for drag and drop functionality, and if so, how?
Yes, HTML5 can be used to drag and drop an element. The events involved in the drag-and-drop process are:
- Dragstart: occurs when the user starts dragging an element.
- Dragend: this happens when a dragged element is dropped.
- Drop: marks the end of a successful event, it means being able to move elements from one place to another with HTML5 Drag and Drop API.
10 Best HTML CSS Interview Questions
Here are some of the most asked html and CSS interview questions for freshers and advanced professionals during an interview:
43. What is the most important concept in CSS?
The most important concept in CSS is Cascading, which refers to how different styles are applied depending on their specificity and origin of declaration.
44. How does an external style sheet improve a web page’s performance?
By storing all your styling information externally you reduce the amount of code included directly within each HTML document, resulting in improved loading time for users as well smaller file sizes overall reducing server load times too. Meaning both faster downloads and better SEO rankings.
45. Explain what pseudo-classes & elements are & give examples where appropriate.
Pseudo-classes/elements provide additional selectors beyond those available with basic DOM structure path selector type (called element Selector).
For example, hover will change appearance when hovering over a link or button while first-line affects only the first line of text inside that block-level item like paragraphs, etc.
46. What is the CSS Box Model?
The CSS box model is a visual representation of how HTML elements are structured and consist of four main components – margins, borders, padding & content. It’s used to create layouts within webpages by allowing developers to specify exact measurements for each component to achieve their desired look.
47. What elements should you consider to create a responsive design?
Elements to consider for responsive design include:
- Media queries and conditions are necessary for the layout to adapt properly according to device resolution.
- Size considerations related to positioning ahead by adapting elements accordingly relative to its parent container movement.
- Setting required to ensure project completion, regardless of the tasks achieved, while also meeting the deadline.
48. How can you use the CSS Flexbox feature?
The flexbox feature in CSS is a powerful tool for helping developers create flexible layouts. It enables the creation of grids, columns, and rows that adapt automatically based on various display sizes or orientations. This makes it ideal for creating responsive web pages with elements such as menus and content areas which are always visible no matter what size screen they’re viewed on.
49. What’s float property used to do?
The float property can be used for constructing custom page layouts. When applied to a container element, like a <div>, it lets you position individual blocks on the left or right side of another element, such as an image or link. You just have to specify “left”, “right”, or “none” and everything should work fine. However, if objects start being pushed away due to margins, resetting the float may help keep elements in place according to your design intent.
50. Explain how the Z-index works.
The Z-Index refers to a stacking order methodology, where an ordered list is placed in layers. If the resulting layer’s ‘height’ structure is applied above other elements assigned to the same layer, it will appear ‘on top’ when there’s any conflict resolution statement made. The effect remains constant if this declaration has been duplicated in other sections of the document or parent container. Otherwise, these rules remain static throughout your stylesheet.
51. What does overflow mean & why is it important?
Overflow means anything that exceeds a boundary or limit. It is important because it affects design characteristics, such as displaying and clipping content beyond set boundaries. Additionally, overflow provides users with access to scrollbars which allows them to move around an interface-specific viewport type within their browser based on the markup choices they have made concerning setting widths and heights with relevant CSS attribute rules.
52. What is the difference between classes and IDs in CSS?
The main differences are that classes can be used multiple times on a single HTML page, while an ID should only appear once. Classes use period (.) notation to target elements with class attributes, whereas ids use hashtag (#) notation for targeting specific element IDs.
Conclusion
Preparing for these HTML interview questions can help both freshers and experienced professionals in their attempt to gain a better understanding of the fundamentals as well as advanced topics related to HTML. They will be able to learn more about essential HTML concepts. Also, this blog will provide you with preparatory questions for HTML, CSS, and HTML5, preparing you to stand out during your Interview.
