Important questions to ask in interview from a web developer

The profession of a web developer is at boom nowadays. Thinking about the payment offered to these professionals, there are many individuals who would wish to pursue their web developing course and would want to develop an effective career in this field. However, there are specific obstacles connected with it.

Firstly, as an employer, there’s a lot of concerns you can toss at a developer, from barbecuing them about their resume to asking ways to escape a huge mistake.

If you are developer, the significant obstacle is that to answer the interview in an efficient method. For this sake, it is essential that you have a concept on the web developer interview concerns that are usually asked. With the below discussed web developer interview concerns 2015, you will be able to get a reasonable concept and this will really be useful for you to answer the interview in an efficient way. When you have an idea on this, web developer interview would be simple.


Developer point of view

So, as a web developer you have to be gotten ready for following type of questions.

  • First of all, after the basic concerns, you might be inquired about what are the normal duties of a professional in this field. Make certain you comprehend the responsibilities effectively, so that you can plainly validate the role. Mending of the bugs, fixing and dealing with different other issues, program testing, debug of the web applications are a few of the duties included.
  • You might be asked on the professional knowledge that a web developer has to have. Preferably, they are required to possess knowledge in various fields such as CSS, HTML, SQL, Javascript etc
  • Have understanding on Cross-Origin Resource Sharing as this is something that is generally asked. Know to describe it well.
  • The advantages related to HTTP/2 when as compared to HTTP 1.1 is also a most likely question. Ensure to address is an extremely distinguished way.
  • Have knowledge on ETag too and understand how it really works.
  • Understand about long polling as well as supplying description of it can be the most likely question asked.
  • Explanation on Document Type Declaration could be asked and make certain that you understand the distinctions in between PCDATA and CDATA in DTD.
  • You also might be requested some pointers that will minimize load time of web application that is written by you.
  • You might also be asked on the proper way of including the JavaScript on HTML.
  • Explanation of CSS and numerous properties connected with it could also be asked.
  • Different concerns related to HTML tagging might also be asked.
  • Make sure that you understand the differences between local storage and cookies as this is a most likely question.
  • Also have an idea of a few of the reliable manner ins which will assist in the reduction of the page load time.


Recruiter point of view

As a recruiter you can begin from here.

What are a few of your best soft skills?

It’s hard to nail down a comprehensive meaning of soft skills to satisfy everyone. Soft skills are typically believed of as being synonymous with individuals skills. Believe of them as individual characteristics that connect to a person’s ability to communicate with others.

Problem solvers: People who look for to fix issues with the minimum quantity of effort. They do not design extremely complex options.

Good communicators: A developer needs to work closely with great deals of various specialists who do not necessarily comprehend what a developer does. It’s essential that developers can clearly communicate their function and their perspective on a problem.

Obsessional tinkerers: A developer ought to always be experimenting, learning, and attempting new things.

Willingness to find out: Web developers will continually discover themselves outside their comfort zones. When they lastly end up being comfy with their skills, the whole technology landscape modifications, and they will have to find out new ideas, methods, and best practices to adjust to the new environment. Individuals who have a continuous desire to enhance themselves will do incredibly well in this work.

Interest: People who enjoy what they do will be more dedicated, will take longer to tire of the day’s work, will go the additional mile to obtain the task done, and will have terrific pride in their work.

Social Skills: The best developers have exceptional social skills. They can convey their concepts and ideas in methods their clients can understand. They agree individuals, they can motivate their associates to achieve much better work (commonly without recognizing it), and they’re just outstanding individuals to have around in general.

For more perspective on what soft abilities every developer should have:

  • Communication
  • Listening
  • Flexibility
  • Teamwork
  • Attitude
  • Work principles
  • Judgment
  • Crucial thinking
  • Ego management


Who do you follow?

This isn’t a question solely about what Tweets your job candidate retweets, or what Facebook updates they like. This is about what programming blogs they cannot wait to check out and what code repositories they keep track of.

How do you balance client requirements?

The quicker a Web developer composes, the quicker updates can be launched to clients. But this includes a trade off: the risk of releasing untried, buggy code. Asking a Web developer about her decision-making about providing what clients require “yesterday” will reveal a wealth of information about her. If she’s prepared to go the extra mile making customers pleased, then excellent. However if this comes at the cost of undocumented code, improper naming conventions, etc, then that’s another story.

Technical Questions

1) Explain what are the essential duties of a Web Developer?

  • Program test and debug all web applications
  • Design, develop, test and deploy web applications
  • Publishing sites onto server and registering it with different search engines
  • Coordinate with other designers and developers to develop web projects
  • Fix bugs, troubleshoot and deal with problems
  • In case of system failure initiate periodic testing and carry out contingency strategies
  • Develop proper code structures to fix particular tasks
  • Support and assist in the maintenance and maintenance of sites
  • Assume ownership of code throughout staging, development, testing and production.


2) What web developer should know?

A great web developer should know

  • HTML
  • CSS
  • SQL
  • PHP/Ruby/Python
  • JQuery
  • JavaScript


3) Explain what is CORS? How does it work?

(CORS) Cross-Origin Resource Sharing is a mechanism that allows many resources (e.g., JavaScript, typefaces and so on) on a web page to be asked for from another domain outside the domain from which the resource came from. It is a mechanism supported in HTML5 that manages XMLHttpRequest access to a domain different.

4) List out the advantage of HTTP/2 as compared with HTTP 1.1?

The advantage of HTTP/2 compared with HTTP/1.1 is

  • HTTP headers data compression
  • Server push technologies
  • Over a single TCP connection parallel loading of page elements
  • Prioritization of demand.


5) Explain what is an ETag and how does it work?

An ETag is an opaque identifier assigned by a web server to a certain version of a resource discovered at a URL. The ETag is a part of HTTP, the method for the web when the server reads the ETag from customer request, the server can then tell whether to send the file (HTTP 200) or tell the customer simply to use their local copy (HTTP 304).

6) Explain what is long ballot?

Long ballot is a web application development pattern used to replicate pushing data from the server to the client. When the long ballot is made use of, the client sends a request to the server, and the connection continues to be intact until the server prepares to send data to the customer. The connection will be closed only after the data is returned to the customer or connection timeout happens.

7) Explain what is DTD (Document Type Declaration)? Mention what is the difference in between CDATA and PCDATA in DTD?

A DTD implies Document Type Definition (DTD) which specifies the structure, legal elements and attributes of an XML document.

PCDATA: A PCDATA is a Parsed Character Data. XML parsers usually parse all the text in an XML document.

CDATA: While CDATA is an Unparsed Character Data, the term CDATA is made use of about text data that need to not be parsed by the XML parser.

8) Mention some suggestions you can use to minimize the load time of a web application that you have written?

To decrease the load time of a web application you need to follow the following tips

  • Enhance images to no longer than screen resolution and conserve it as a compressed file
  • Get rid of all JavaScript files to lower the quantity of transferable data
  • Integrate & Mininify all CSS and JS and call them in footer
  • Defer or Asynch JS Files


9) Mention what is the appropriate method to include JavaScript into your HTML?

The right way to consist of JavaScript into your HTML is by utilizing inline event handlers or inline code.

10) Explain in CSS, how can you make a form component’s background color modification when the user is going into text? Does this operate in all browsers?

Yes, you can alter the default appearance of form aspects by styling their HTML tags: input, select and textarea however it will not work for all web browsers.

11) In HTML what tag can be used for a multi-line text input control?

For multi-line text input control, you can use the “textarea tag”.

12) Explain how can you describe CSS file in the web page?

You can describe the.CSS file in the webpage using the <link> tag. It ought to be kept in between <head></head>tag. For instance <linkhref=”/css/mystyle.css” type=”text/css” rel=”stylesheet”/>

13) List out couple of ways you can minimize page load time?

You can do following things to decrease the page load time

  • Minimize image size
  • Eliminate unneeded widgets
  • HTTP compression
  • Positioning CSS on top and script reference at the bottom or in external files
  • Minimize lookups
  • Minimize redirects
  • Caching.


14) How XHTML is different from HTML?

  • XHTML needs that tags should remain in lowercase.
  • XHTML requires that all tags ought to be closed appropriately.
  • XHTML needs that attributes are confined in double quotes.
  • XHTML forbids inline elements from consisting of block level aspects.


15) List out the new APIs supplied by HTML 5 standard?

HTML 5 features number of new APIs.

  • Media API.
  • Text track API.
  • Application Cache API.
  • Data transfer API.
  • User Interaction.
  • Command API.
  • Constraint Validation API.
  • History API.

Post a comment