Front End Developer Interview Tools
There are a ton of great resources to help you prepare for a front end interview. They all cover the same things, so if you have one you prefer, definitely use it! That being said, some of my favorite tools are:
- Leetcode – The de facto interview prep site with the largest number of sample questions.
- Cracking the Coding Interview – The de facto interview prep book.
- HackerRank – A Leetcode competitor but also the site most often used for take-homes. It’s nice to get some hands-on experience with their UI before you begin.
- AlgoExpert – A new site with fewer sample questions than Leetcode but premium videos for each one.
What Is Front Ends Developer
So, to start with, what exactly is a frontend developer? What did they do?
The front end means what appears in front of the users . So, a front end developer implements the structure, design, behaviour, and animations related to every bit and piece that you see whenever you open a website or a mobile application.
If you are looking for a Front-end Developer job, you need to prepare for the 2023 Front end Developer Interview Questions. Every interview is indeed different as per the different job profiles. Here, we have prepared the important Front end Developer Interview Questions and Answers, which will help you succeed in your interview.
This 2023 article shall present 14 most important and frequently asked Front end Developer Interview questions. These questions are divided into two parts as follows:
State The Difference Between == And ===
== denotes abstract equality operator, and it inspects if two values are equal or not apart from their data types. Automatically, it transforms the type of both the operands and compares them.
Example:
1=='1' //true1==1 // true
=== denotes identity equality operator, and it inspects the values of both the operands and their data type. The outcome of the operation will be true considering both the operands are equal and have the same data type, or else it returns false.
Example:
1===1 //true1==='1' // false
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How You Could Answer
As a web user myself, theres nothing more frustrating than trying to navigate a poorly designed and choppy website. Initially, thisand my education in web developmentdrew me to this field. As a front-end web developer, I enjoy the creative outlet it provides and the opportunity to put my programming skills to work. Plus, I pride myself on ensuring that users can easily navigate and interact with a website. To me, its all about creating a great user experience in a tangible end result that I can see and use.
I still feel that there is more room to grow and learn about creating websites that run efficiently. I would like to learn more about the processes involved in back-end development, so I can gain a greater understanding of how it works with the front end.
What Are Some Ways To Enhance Page Performance
Page performance is a key metric for front-end developers. It can be increased by incorporating some of the following methods.
- Cleaning the HTML document.
- Using sprites, compressed images, and smaller images.
- Adding JavaScript at the bottom of the page.
- Reducing external HTTP requests.
- Minifying CSS, JavaScript, HTML.
- Using CDN and Caching.
With that, weve wrapped up our guide to acing your front-end developer interview. By being prepared to answer variations of these ten questions, you will be one step ahead of your competition during the interview process.
If you read these questions and found yourself second guessing your knowledge, you should consider our Software Engineering course. Its designed to give you all the technical skills and interview prep required to land your dream job. Or, if youd just like a bit more guidance on how to succeed as a front-end developer for a company youll love, our blog is full of useful articles to help you do just that.
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Discuss The Biggest Challenge Of Your Career
This is not the time to discuss a personal challenge, like overcoming your fear of public speaking. Instead, focus on a professional challenge that you faced and overcame, such as developing for a defunct system, or encountering a particular UI/UX challenge. Talk about what the problem was, how you tackled it, and what the result was. As with the previous question, try to connect your story to the company’s values or mission
In Coffeescript How Clone
Clone function is useful in creating a complete new object in Coffee Script by
- Copying all attributes from the source object to the new object
- Repeating the steps of copying attributes from the source object for all sub-objects by calling the clone-function
- Creating a new object as the source object
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What Is Semantic Html 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.
What Questions Should I Ask My Front End Developer
Front-End development is a vast field and you cannot keep asking the same questions to all front-end developers.
The list of questions will always vary and depends on your requirements. You cannot ask questions related to React.js related questions to a junior front-end developer having knowledge of only HTML CSS and JavaScript.
Vice versa you cannot select an advanced React.js Skilled Front-end developer by just asking questions about HTML, CSS, or even Bootstrap or JavaScript.
Therefore, before preparing yourself to hire a good front-end developer you must prepare the Job description and write down the list of detailed requirements for which you are looking for a front-end developer.
It will help you to get the best match for your job and increase your confidence level while recruiting a developer to understand whether he/she is a good match for you or have to look for any other.
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How Does The Server Hanger The Page In Which Content Is Present In Several Languages
When an HTTP request is sent to the server by the user, the user browser also sends a chunk of additional information regarding the language preference as the Accept-Language header. Then the server reads the HTTP request with the Accept-Language header and sends the document version back along with the right language and declares the language attribute Lang in the HTML tag.
Example:
Explain The Difference Between Git Pull And Git Fetch
Git Fetch
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
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Explain What Is The Difference Between Class And Prototypal Inheritance In Javascript
Inheritance in JavaScript is different from most other programming languages. The object system in JavaScript is prototype based, not class based. Objects in JavaScript are just a collection of a name and value pairs. When it comes to inheritance, JavaScript only has one construct: objects. Every object has a private property which contains a link to another object called its prototype.
How To Prepare For Your Front End Engineer Interview
At the end of the day, practice makes perfect. Not only does that apply to front-end development itself, but to interviewing as well.
And, one of the most effective ways to practice your interviewing skills is with the help of an interview coach.
Interview coaches can do several things for you. Theyll:
- Review and help improve your resume,
- Personalize the coaching sessions according to your professional goals & needs,
- Conduct mock interviews & provide constructive feedback on your performance,
- Teach you how to successfully negotiate job offers and salaries,
Acing a front-end interview can be tough, especially in this economic climate. However, with an interview coach in your corner, youll give yourself the best chance and the best resources of doing just that.
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What Resources Do You Use To Learn About The Latest In Front End Development And Design
Technology and standards change constantly in front end development. Applicants who have an always-be-learning approach can learn new ways to improve the development process and improve the experience for end users. What to look for in an answer:
- Examples of publications the applicant reads
- Participation in open source or personal front end development projects
- Enrollment in continuing education workshops or online courses
Example:
I have several subscriptions to front end development magazines and participate on the Stack Overflow forums. These resources help me learn about the latest innovations in front end development.
How Do I Prepare For A Front
When you’re preparing for your Front-end developer interview, try to code most of your layout without taking a glance at the result till the end. If CSS, HTMLare the most important aspect of front-end development, then JavaScript tops the list of important skills to own. Organisations will spend a lot of time during your interview to test your understanding of Javascript.
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What Is Progressive Rendering
Progressive rendering is a process that is utilized generally to boost the web page’s rendering content process. Now the rendering process is utilized in modern web development to enhance the mobile data uses of the user, async HTML fragments, prioritizing visible content, and lazy loading of images.
How To Crack A Front
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Sample Google Interview Questions For Front
Weâll begin with some warmup Google front-end interview questions. Ensure you can solve them before your interview:
Want to know the salary details of Google front-end Engineers? Read our article on for compensation details. Also, check out these 6 steps to crack the front-end interview.
What Is A Bundler
We like to author code by separating components into individual files. This makes it nice for us as developers but would be very slow if you try to force the user to load all 100+ files. Therefore we use a tool like webpack to grab all the files and concatenate them together. That way, we can serve 1 or 2 “bundles” of code instead of 100 individual files.
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Questions To Be A Front End Developer Manager
If the company is looking for a front end developer manager, they are going to ask you these kinds of questions. This job position has greater responsibilities and requires from you to know how to coordinate the work of several front end developers, but salary and career opportunities are substantially higher.
Explain The Prototype Design Pattern
The Prototype Pattern creates new objects. But the peculiarity is that instead of creating non-initialized objects, it returns objects that are initialized with values copied from a prototype – or sample – object.
One example is the initialization of business objects with values that match the default values in the database. Classical languages rarely use the Prototype pattern, but JavaScript being a prototypal language uses this pattern in the construction of new objects and their prototypes.
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What Do You Do When You Get Stuck
No one likes being stuck, but it’s a fact of life for any programmer. Talk about methods you use to get unstuck, such as asking for help, doing research, or taking a break. Also, mention how you prevent yourself from getting stuck in the first place, such as research in advance and making sure you don’t stretch the project’s scope.
How To Approach Front End Developer Interview Questions
Interviews can be scary. The interviewee gets to pull a random question out of the air, and you have to get to work solving it! Keep in mind that there are many things you can do to improve your experience regardless of the question asked. Here are a few tips I always try to keep in mind:
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Tips And Tricks For Front End Developer Interview Questions
A front-end developer interview can be stress-free, to a certain extent. The career is growing by leaps and bounds don’t try to prove yourself too much. Walk in with a clean portfolio and prepare with test questions and answers.
What Is Data Binding And How Does It Work Which Data Binding Methods Does Angular Use
Data binding is a method of manipulating web page elements through the usage of a web browser. It’s utilized in interactive elements like forms, calculators, tutorials, and games on web pages.
Two-way Data Binding is used by Angular. Any modifications made to the user interface mirror the elements in the model state and vice versa.
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What Is The Use Of Clone
Front-end developer interviews often get technical, so be prepared to respond with specifics.
Clone function can be used to create an entirely new object in Coffee Script using the following steps:
- Clone function creates a new object as the source object
- It copies all attributes from the source object to the new object
- It repeats the steps of copying attributes from the source object for all sub-objects
While you might not get into the fine details during your interview, displaying some of this knowledge could indicate to your future employer that youll be a knowledgeable addition to the front-end development team.
Which Are The Layers Present In A Webpage
There are 3 kinds of layers in any web page: the Content Layer, the Presentation Layer and the Behavior Layer.
The content layer is the information that a given website holds. The presentation layer defines how the content will appear to its users, the look and feel of the web page. The behavioral layer involves real-time interaction between users and web page.
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How Do You Create Nested Web Pages In Html
< !DOCTYPE html>
< /body>
< /html>
- An unordered list uses < ul> < /ul> tags and each element of the list is written between < li> < /li> tags.
- An ordered list uses < ol> < /ol> tags and each element of the list is written between < li> < /li> tags.
Now that we are familiar with HTML questions, lets look at the next set of Frontend Developer Interview Questions, CSS
Suggest How Can We Optimize Our Front
- The consumption of resources can be reduced by the pages by enhancing the server response.
- Utilize JavaScript and External CSS instead of internal or in-line.
- Utilize the framework to ensure the front-end becomes more responsive to different devices.
- Open-source libraries can be used to manage the browser-specific styling issue.
- Make use of progressive loading like Lazy Loading to enhance the rendering of heavy elements, like videos and images.
- Connect the style sheet in the header and script at the top of the HTML’s body tag.
- Utilize browser storage to keep user-specific private data.
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