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Front-end Engineer Technical Interview Question Collection (2023 updated)

by 쉽게 이해하는 테크 2023. 7. 7.
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front end engineer interview question prep

Front-end Engineer Technical Interview - Conceptual questions

 

Front-end Engineer Technical Interview - Coding

 

 

 

1. Reverse String using inbuilt methods and without methods

2. Sort the number array in descending order

The sort method sorts data in ascending order according to Unicode value.

If you want to customize the sorting order, you will need to use a compare function, as shown in the example.

 

 

 

 

Javascript

Javascript tutorial - Dom Object Model

 

https://javascript.info/

 

Q. Optimization

How to optimize our front-end page?

  1. Improve Server Response: Enhance the server's performance to reduce the time it takes to deliver resources to the client. This can be achieved through various techniques such as caching, compression, and optimizing database queries.
  2. Use External CSS and JavaScript: Instead of using inline or internal styles and scripts, separate them into external files. This allows the browser to cache and load these resources separately, improving page load speed and reducing redundancy.
  3. Utilize Frameworks: Employ front-end frameworks like React, Angular, or Vue.js to create responsive and efficient user interfaces. These frameworks provide pre-built components, state management, and performance optimizations out of the box.
  4. Leverage Open-Source Libraries: Use open-source libraries like Bootstrap or Material-UI to handle browser-specific styling issues. These libraries offer pre-styled components and ensure cross-browser compatibility, saving development time and effort.
  5. Implement Progressive Loading: Implement techniques like Lazy Loading to optimize the rendering of heavy elements, such as images or videos. Lazy Loading defers the loading of non-visible content until the user interacts with it, reducing the initial load time.
  6. Optimize Resource Placement: Connect your stylesheet in the <head> section of the HTML document and scripts at the top of the <body> tag. This allows the styles to be applied early and scripts to be loaded before rendering, improving the overall performance.
  7. Use Browser Storage: Utilize browser storage mechanisms like localStorage or sessionStorage to store user-specific private data. This reduces the need to fetch data from the server repeatedly, improving performance and providing a better user experience.

By implementing these optimizations, you can reduce resource consumption, improve page load speed, enhance responsiveness, and deliver a more efficient and user-friendly front-end experience.

 

 

 

 

Free Web Development Courses

Here are the Free but Best Web Development Courses along with the study plan.

If you want to refer to any term in web development, use w3school for reference or MDN

Phase 1: Foundations for HTML, CSS, and Javascript (Days 1-14)

  1. Day 1-3: Introduction to HTML
  2. Day 4-6: Introduction to CSS
  3. Day 7-9: Introduction to JavaScript
  4. Day 10-14: Responsive Web Design

 

Phase 2: Front-End Development (Days 15-42)

  1. Day 15-21: Advanced HTML and CSS
  2. Day 22-28: JavaScript and DOM Manipulation
  3. Day 29-35: Front-End Frameworks
  4. Day 36-42: Version Control and Collaboration

Phase 3: Back-End Development (Days 43-70)

  1. Day 43-49: Server-Side Programming
  2. Day 50-56: Databases and Data Storage
  3. Day 57-63: RESTful APIs and Integration
  4. Day 64-70: Security and Authentication

Phase 4: Project Development (Days 71-90)

  1. Day 71-80: Full-Stack Project
    • Identify a project idea
    • Plan and design the project’s architecture
    • Develop the project using your chosen technologies
    • Test and debug the application
  2. Day 81-90: Deployment and Optimization
 

 

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