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Javascript

8 months ago

How do you code the promisify() function to change callback-based functions into Promise-based in JavaScript?

Frontend Engineer

Valve

Zoom

Paradox Interactive

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8 months ago

Javascript

8 months ago

Could you explain your approach to flattening nested arrays in JavaScript, with a code example?

Frontend Engineer

Valve

GREE

AT&T

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8 months ago

Javascript

10 months ago

How do you envision writing a map() function in JavaScript that acts on each array element with a specific callback function?

Frontend Engineer

Valve

King

Lyft

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10 months ago

Javascript

a year ago

Can you construct a JavaScript functional component for virtual DOM representation?

Frontend Engineer

Valve

Baidu

Funcom

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a year ago

Coding

a year ago

How do you perceive the role and advantages of hash maps in data structures, and what features make them unique?

Frontend Engineer

Valve

monday.com

Hitachi

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a year ago

Javascript

a year ago

What steps would you take to develop a JavaScript function that accesses the left sibling of a DOM element?

Frontend Engineer

Valve

THQ Nordic

Gas Powered Games

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a year ago

Javascript

a year ago

Can you illustrate a JavaScript function that translates integers into Roman numerals?

Frontend Engineer

Valve

Adobe

Unity Technologies

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a year ago

Javascript

a year ago

How do you code the produce() function in Immer for immutable state management?

Frontend Engineer

Valve

WeWork

Playdemic

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a year ago

Javascript

a year ago

Can you demonstrate a method in JavaScript to extract the k elements with the highest occurrence rates in an array?

Frontend Engineer

Valve

Toshiba

Supercell

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a year ago

Javascript

a year ago

Can you describe how toBe() and not.toBe() are used in JavaScript testing frameworks such as Jest?

Frontend Engineer

Valve

Tata Consultancy Services (TCS)

Infosys

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a year ago

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