15 HTML5 Interview Questions and Answers

Having cleared your course in HTML5 language, you are faced with the hard part of getting a job. As daunting as an interview may appear, it is quite possible to ace it. All it takes is proper preparation and composure. Based on that, we have gathered 15 html5 interview questions that you won’t miss in your interview for an html5 job. Not only will we add on to what you already know but also (hopefully) boost your confidence.

the logo of html5

Question 1: What is your preferred development environment?

This kind of question is seeking to evaluate the extent of your mastery in the program development field. Hence, this will be your opportunity to refresh on some of the fundamentals of programming. You could mention your favorite language, browser, and operating system among others.

Question 2: Briefly describe HTML5

HTML5 is the improved version of the HTML standard and is a platform for the development and presentation of content in the World Wide Web.

Question 3: What was the main reason for the innovation of the HTML5?

HTML5 was designed to supplement some of the deficiencies of HTML4, XHTML and the HTML. The goals which it was to accomplish are:

  • Delivering cutting edge graphics and motion pictures without the need for additional plugins.
  • Introduction of new structural elements to deliver better semantic support for web page structures.
  • To provide an integrated parsing standard that would ensure easier error-handling and consistency in cross-browsing. It would also ensure backward compatibility with files written in contemporary standards.
  • To provide an exclusive cross-platform support. That includes the ability to run on PCs and mobile phones.

Question 4: Describe new features of the HTML5.

  • The introduction of new tags such as <canvas>, <audio>, and <video> tags provides better support for embedding of graphics, video and audio content.
  • There have been additional extensions to the JavaScript Application program interface protocol including geolocation and drag-and-drop for storage and caching.
  • The inception of the ‘web workers’.
  • The improved semantics have been used to complement the structural logic of the new web applications.

Question 5: “Web Workers” are some of the new aspects of HTML5. What do they entail?

This is one of the most problematic HTML5 interview questions because few know about these tricky workers. A web worker is a script that usually runs in the background or another thread without the page having to wait for it to terminate. It enables the user to interact with the interface as it works in the background. They achieve parallelism through the usage of thread-like message transfer procedure. Through web workers, multi-threading is now available for JavaScript.

Question 6: How can one show a character set in use by an HTML5 file?

In HTML5 the new attribute ‘charset’ of the <meta> tag can be used to indicate the encoding used inside the document’s <head> element. It has simplified the work big time as compared to the previous HTML versions. The syntax was rather simpler and didn’t include the charset attribute.

Question 7: Explain the point of difference between an HTML specification and a browser’s implementation.

HTML specifications define a set of rules that a given document must abide by to be considered valid based on the specification. Besides, it gives instructions on how a browser has to be interpreted and be rendered. A browser supports a specification only if it manages to handle all the rules of the particular specifications. That implies that during the development of a web browser, consideration has to be put on the aspect used by applications.

At the moment not all the specifications of HTML5 are supported by most browsers in use today. Therefore it has designed some rules to help manage the syntax errors that occur.

Question 8: Give the browsers that support HTML5.

Apple Safari (the most recent versions), Google Chrome, Mozilla Firefox, and Opera support most of the functionalities of the HTML5. The Internet Explorer 9.0 also supports some features of the scripting language.

Question 9: Is the HTML5 backward functional in older web browsers?

Yes, it does. HTML5 has been made as dynamic as possible, being able to be backward compatible to support old browser specifications. Also, it is also designed to take into account the additions that may be carried out on the existing browsers.

Question 10: What role does the newly incorporated tag <canvas> play?

It is applied in 2D drawing in HTML5. It is applicable via scripting a process in the JavaScript language to develop fantastic two-dimensional graphics.

Question 11: Describe the new form elements available in the HTML5.

HTML5 has brought about new items that have gone a long way in improving the functionality. They include <datalist>, <keygen>, and <output>. The <datalist> specifies a list of pre-defined options for the input controls. The <keygen> tag defines the key-pair generator field.

The last tag, <output>, describes the outcome of the calculations.

Question 12: Define SVG and give its uses.

After a thorough research in popular HTML interview platforms, we have established that this query falls among the redundant html5 interview questions.

SVG is a contracted form of Scalable Vector Graphics. W3C recommends it. SVG is used to describe vector-based graphics for the internet. These graphics are usually defined in the XML format. One major plus for SVG is the fact that its quality is kept upon zooming or resizing. It is also true that its elements can all be animated.

Question 13: give the advantages of SVG over other image formats like JPEG or GIF.

  • Just as mentioned above, the elements of the SVG can be animated.
  • They are also scalable.
  • They maintain a high print quality despite the resolution of the image.
  • Zooming of the SVG images does not lead to depreciation in the picture quality.
  • The SVG images can be indexed, searched, scripted and even compressed.

Question 14: What is the relationship between the <header and=”and” <h1=”&lt;h1″> tags as used in HTML5?

In the previous html standard specification was only present on a single page and played the role of heading the whole page. However, in HTML5 there is a specification regarding as the top-level heading for a section (<body>, <article>, and <section>) of an element. In addition, it is a requirement that every <header> element be assigned at least one element. In the event of a missing natural heading then the <article> or <section> tags should not be featured. Of course, there are plenty of other HTML5 interview questions that address similar issues. The only way to ace an interview is to be prepared.

Question 15: Is it possible for a web page to have multiple <header> or <footer> elements?

Yes, it is. It follows that the two elements are specially designed to fulfill their respective duties with regards to their parent ‘section’. Therefore, the page or <body>, <article>, and <section> can contain both a header and a footer. The header is mandatory for all the three; the footer, however, is optional.

Question 16: Are the HTML5 tags case sensitive?

No, they are not.

HTML5 brings great qualities superior to its former versions. It has, therefore, found application in most of the modern web browsers for the best functionality ever. These top html5 interview questions have helped to prove that. Therefore, it is your task to express the understanding of HTML5 to your employer to better your chances at getting the job. We hope that you find this information helpful with regards to your upcoming interview, which is a gateway to your dream job as well. You may refer those close to you to these 15 html5 interview questions to help them ace their interviews too.

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