Frequently Asked Questions

JavaScript Language and Libraries

• What to expect in a FAANG front-end coding interview: Company-specific aspects
• Challenging JS coding problems: Behavior and usage of "this" keyword. How to bind a function's scope. Arrow functions vs. binding.
• Limiting the scope of variables (a commonly tested concept in interviews). Patterns for creating "private" variables.
• Use built-in JavaScript data structures to solve problems in a time-constrained interview setting. Explain trade-offs between using object literals, maps, sets, and arrays.
• Strategies to solve important problems involving concepts such as currying and callbacks.
• Popular FAANG interview questions on writing code that runs asynchronously, with and without promises.
• Frequently asked coding problems:
• Existential get() operation using string key
• Write a function that, until all N arguments are provided, returns a function for consuming more arguments (currying example)
• Memoization of an async function

UI and DOM

• A structured approach to identifying and solving complex problems that require a combination of HTML, CSS, and JS knowledge (frequently asked in Front-end interviews)
• How to handle unique UI challenges posed in FAANG interviews by setting up reusable UI components.
• How to consistently position items on the page or within a relative parent (an important skill for UI Developers).
• Strategies to solve problems using modern JavaScript. Connect the code to the UI elements.
• Tips to efficiently design and code UI elements like Dropdowns, Tooltip, Progress Button, etc. 
• Comprehensive guidelines on managing requirements of design-centric problems.
• Questions on using Flexbox to quickly solve complex design challenges.

Front-end System Design

• ​​Design complex/large-scale Front-end Systems like Netflix, FB home page, Infinite Scroller, Instagram, etc. 
• Popular FAANG interview question on designing a redux-like state management system from scratch.
• Design and build reusable UI Components: How common components systems work.
• How to think, act and articulate like a Front-end architect and tech lead, displaying senior+ signals in System Design interviews using methodical and structured interview strategy.
• Evaluate options, perform trade-offs, and analyze the business impact of modern web development frameworks:
• Essential understanding of popular UI libraries and frameworks such as React, Angular, etc.
• Portability across frameworks, platforms, devices.
• How to manage the state of a UI application (a demonstration of how to approach programming questions in the UI system design domain).
• Design a common components library such as Bootstrap.
• Design a UI component SDK (a common theme in Front-end System Design interviews).
• Industry trends within Front-end engineering and surrounding domains (AI/ML).

Interview Strategy and Success

Behavioral Interview Prep