TechieClues

HTML5 - Interview Questions & Answers
1. What is HTML5?
HTML5 is a core technology markup language of the Internet used for structuring and presenting content for the World Wide Web. As of October 2014 [update] this is the final and complete fifth revision of the HTML standard of the World Wide Web Consortium (W3C). The previous version, HTML 4, was standardised in 1997.
2. What is the use of Canvas Element in HTML5?
HTML5 Canvas element can be used to draw graphics images on a web page by using javascript.
3. What is the difference between the application model of HTML and HTML5?
HTML was a simple language for laying out text and images on a webpage, whereas HTML5 can be viewed as an application development platform that does what HTML does that and more, including better support for audio, video, and interactive graphics. It has a number of new elements, supports offline data storage for applications, and has more robust exchange protocols. Thus, proprietary plug-in technologies like Adobe Flash, Microsoft Silverlight, Apache Pivot, and Sun JavaFX are no longer needed, because browsers can now process these elements without additional requirements.
4. What are some other advantages of HTML5?
  • Cleaner markup than earlier versions of HTML
  • Additional semantics of new elements like <header>, <nav>, and <time>
  • New form input types and attributes that will (and in Opera’s case, do) take the hassle out of scripting forms.
5. List of void elements in HTML?
Complete list of void elements in HTML below :
<area>, <base>, <br>, <col>, <command>, <embed>, <hr>, <img>, <input>, <keygen>, <link>, <meta>, <param>, <source>, <track>, <wbr>
6. List some new HTML5 markup elements?
Below are new HTML elements in HTML,
<article>, <aside>, <bdi>, <command>, <details>, <figure>, <figcaption>, <summary>, <header>, <footer>, <hgroup>, <mark>, <meter>, <nav>, <progress>, <ruby>, <rt>, <section>, <time>, and <wpr>.
7. What is a void or empty element in HTML5?
A void element is any element that can not, by definition, have any content in between the start and end tags, but the only type of data that void elements are allowed to have are attributes. Some examples of void elements that you are probably already familiar with include the img (image), br (break), hr (horizontal rule), and meta tags. Of course, all of the tags that we mentioned can have attributes, but the reason they are void elements is that you will never see any content in between a start and end tag for a void element – so something like www.somesite.com/animage.png, or some meta info here would be invalid and would not make any sense anyways since you can put all of that information in the atrributes of those tags.
8. What is the new DOCTYPE?
Instead of typing out a ridiculously long DOCTYPE statement to tell the browser how to render your webpage, this long line of code has been truncated to <!doctype html>
9. What is SVG?
SVG stands for scalable vector graphics. It’s a text based graphic language which draws images using text, lines, dots etc. This makes it lightweight and renders faster.
10. What is datalist in HTML 5?
Datalist element in HTML 5 helps to provide autocomplete feature in a html controls like textbox, etc...
Questions & Answers