Interview questions for Frontend developer

1) What are the main technical and additional skills required to become a front-end developer?

A candidate must obtain the following technical and additional skills to become a front-end developer:
Must Required Skills:
o HTML: HTML is an acronym that stands for HyperText Markup Language. It is a standard markup language used for creating web pages. It describes the structure of a web page and tells the browser how to display the content on the web page.
o CSS: CSS is an acronym that stands for Cascading Style Sheets. It is used to display HTML elements on a screen, paper, or other media. It can also be used to control the layout of multiple web pages all at once.
o JQuery: jQuery is a very fast, small, and feature-rich JavaScript library designed to simplify the HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax.
o JavaScript: JavaScript is a scripting or programming language. This is used to implement the complex features on web pages.
Additional Skills:
Apart from the above mentioned technical skills, a good front-end developer should have the following skills and knowledge:
o It would be great if the candidate has the knowledge and experience of working in any of the Content Management Systems (CMS) like WordPress, Drupal, and Joomla.
o He must know the OOPs concept and PHP.
o Knowledge of cross-browser testing is a plus point.
o It is good if he has some basic knowledge about SEO & tools like Dreamweaver and Flash, which present web-based information to end-users.

2. Name a few Git Commands and function?

• Git Config – Configure the username and email address
• Git init – Initialize a local Git repository
• Git Add – Add one or more files to the staging area
• Git Diff – View the changes made to the file
• Git Commit – Commit changes to the head but not to the remote repository
• Git reset – Undo local changes to the state of a Git repo
• Git Status – Displays the state of the working directory and staging area
• Git Merge – Merge a branch into an active branch
• Git Push – Upload content from the local repository to a remote repository
• Git Pull – Fetch and download content from a remote repository

3. Explain the Difference Between Git Pull and Git Fetch?

Git Fetch
• It downloads only new data from a remote repository using Git fetch
• It does not include any of this new information in your working files
• To update the remote-tracking branches, run Git fetch at any time
• Command – git fetch origin
git fetch –-all
Git Pull
• Git pulls new data and integrates it with the current working files, updating the current HEAD branch with the latest modifications from the remote server
• It attempts to combine remote modifications with those made locally
• Command – git pull origin master

4. What are some most used Git Commands and functions?

Following is a list of some most used Git Commands and functions:
o Git Config: This Git command configures the username and email address.
o Git inits: This Git command is used to initialize a local Git repository.
o Git Add: This Git command adds one or more files to the staging area.
o Git Diff: This Git command is used to view the changes made to the file.
o Git Commit: This Git command makes changes to the head but not to the remote repository.
o Git reset: This Git command is used to undo local changes to the state of a Git repo.
o Git Status: This Git command displays the state of the working directory and staging area.
o Git Merge: This Git command merges a branch into an active branch.
o Git Push: This Git command uploads content from the local repository to a remote repository.
o Git Pull: This Git command is used to fetch and download content from a remote repository.

5. How can you make your web design user-friendly, and what steps would you use to make it?

A front-end developer must follow the steps given below to make their web design user-friendly:
o The front-end developer should focus on the web site’s UI (User Interface) and UX (User Experience).
o Imagine and conceptualize a web page that generates a user-centric experience.
o Test the website with users to ensure optimal design. It also assures that the web page is optimized for mobile phone viewing.

6. What do you understand by Version Control System?

A Version Control System (VCS) is a program that is used to record any changes to a file or set of data so that we can restore it to a previous version if needed. It ensures that everyone on the team is working on the most up-to-date file version.

7. What is Marquee in HTML?

• The marquee is used to scroll the text on the webpage.
• It automatically scrolls the image or text up, down, left, or right.
• You must use <marquee> tags to apply for a marquee.
3. What is Semantic HTML? and how does it work?
• Semantic HTML is a type of coding.
• It is the use of HTML markup to emphasize the content’s semantics or meaning.
• Consider the following scenario: The <b></b> tag is not used for bold statements in semantic HTML, while the <i></i> element is used for italic.
• Instead, you use the <em></em> and <strong></strong> tags.

8. How do you Display a Table on an HTML Webpage?

• To display data in a tabular format, use the HTML table> tag.
• It’s also utilized to control the page’s layout, such as the header section, navigation bar, body content, and footer section.

9. What is Coffee Script? Describe in brief?

CoffeeScript is a lightweight programming language that compiles into JavaScript. It is used to exhibit the good parts of JavaScript simply. It also enables developers to write JavaScript code better by providing constant syntax.

10. What do you understand by the CSS box model?

The CSS box model is a way to handle CSS layout. This term is used when we talk about the design and layout of th elements. Each element is composed of its content, padding, border, and margin.
In other words, we can say that the CSS box model is essentially a box that wraps around every HTML element.

11.  What is the difference between Git Pull and Git Fetch commands?

Git pull and Git fetch are the Git commands used to make changes and retrieve data. Let’s see the key differences between them:
Git fetch Git pull
The Git Fetch command downloads only new data from a remote repository. The Git fetch command is more like checking to see if any changes are available. The Git pull command pulls new data and integrates it with the current working files, updating the current HEAD branch with the latest modifications from the remote server.
The Git fetch command does not include any new information in your working files. The Git pull command combines remote modifications with those made locally.

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