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Coding

3 years ago

In your experience, how do you craft a useEffectOnce() hook in React for executing a specific effect just once?

Frontend Engineer

Sophos

Braintree

WeWork

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3 years ago

Coding

3 years ago

Show how to create the useArray() hook in React that delivers functions for state array management

Frontend Engineer

Sophos

NortonLifeLock

Netflix

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3 years ago

DOM Manipulation

3 years ago

How would you define the Document Object Model (DOM) in web development, and what makes it essential?

Frontend Engineer

Sophos

CCP Games

Amazon Web Services

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3 years ago

Behavioral

3 years ago

What's the difference between null and undefined, and how do you decide which one to use in specific cases?

Frontend Engineer

Sophos

NVIDIA

NCSoft

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3 years ago

DOM Manipulation

3 years ago

Can you discuss the performance trade-offs between using virtual DOM and direct DOM manipulation, including a detailed explanation of virtual DOM's advantages?

Frontend Engineer

Sophos

ESET

Symantec

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3 years ago

Javascript

3 years ago

What method would you use to vertically navigate through a binary tree in JavaScript, printing each node in its respective column?

Frontend Engineer

Sophos

miHoYo

Plarium

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3 years ago

Javascript

3 years ago

How would you go about writing a custom event emitter class in JavaScript that incorporates on, emit, and off methods?

Frontend Engineer

Sophos

Canva

Amazon Web Services

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3 years ago

Behavioral

3 years ago

Have you worked with any of the earlier versions of Angular in your career?

Frontend Engineer

Sophos

AMD

Gameloft

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3 years ago

Coding

3 years ago

What's your strategy for implementing a useClickOutside() hook in React to identify external clicks?

Frontend Engineer

Sophos

GungHo Online Entertainment

Agoda

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3 years ago

Javascript

3 years ago

Can you write a method to find the sole integer in an array where other elements are duplicated?

Frontend Engineer

Sophos

LG Electronics

Indeed.com

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3 years ago

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^*All interview questions are submitted by recent Sophos candidates, labelled and categorized by Prepfully, and then published after verification by current and ex-Sophos employees.