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Javascript

a year ago

What strategy would you use to code the Array.prototype methods like flat, map, reduce, and concat in JavaScript by yourself?

Frontend Engineer

Square Enix

Square

Dropbox

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a year ago

Coding

a year ago

How would you go about making a function to un-nest a list of integers, and also provide an async/await version of this function?

Frontend Engineer

Square Enix

Zalando

Qualcomm

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a year ago

Javascript

a year ago

What methodology would you apply in JavaScript to enhance performance and caching when retrieving feature flags from an API?

Frontend Engineer

Square Enix

Wargaming.net

Capcom

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a year ago

Coding

a year ago

What's your approach to coding a useEffectOnce() hook in React that executes an effect just once during the component's existence?

Frontend Engineer

Square Enix

Braintree

WeWork

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a year ago

Javascript

a year ago

How would you code a custom reduce() function in JavaScript to aggregate values in an array using a callback?

Frontend Engineer

Square Enix

Ubisoft

Amazon Web Services

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a year ago

Coding

a year ago

Can you design a class to execute matrix rotation, and clarify the function's input parameters and return values?

Frontend Engineer

Square Enix

Playrix

Panasonic

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a year ago

Coding

a year ago

Can you outline the steps to build a useFocus() hook in React that focuses on an element as required?

Frontend Engineer

Square Enix

Apple

GREE

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a year ago

Javascript

a year ago

How would you go about coding a JavaScript function to identify the left sibling of a given element in the DOM?

Frontend Engineer

Square Enix

THQ Nordic

Gas Powered Games

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a year ago

Coding

a year ago

What caching techniques would you employ in a flag-fetching API, how would you track its performance, and how would you deal with server malfunctions?

Frontend Engineer

Square Enix

ESET

Naughty Dog

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a year ago

DOM Manipulation

2 years ago

What role does the Document Object Model (DOM) play in web development, and why is it significant?

Frontend Engineer

Square Enix

CCP Games

Amazon Web Services

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2 years ago

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^*All interview questions are submitted by recent Square Enix Frontend Engineer candidates, labelled and categorized by Prepfully, and then published after being verified by Frontend Engineers at Square Enix.

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