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Javascript

2 years ago

How do you approach finding the common elements in two sorted arrays using JavaScript?

Frontend Engineer

Valve

Dropbox

Airbnb

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2 years ago

Coding

2 years ago

Can you construct the useIsMounted() hook in React that returns a true or false based on the component's mount state?

Frontend Engineer

Valve

Colossal Order

Lyft

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2 years ago

Javascript

3 years ago

In JavaScript, how would you code the getElementsByStyle function to return elements with a specified CSS style, and what would be your DOM traversal strategy?

Frontend Engineer

Valve

HCL Technologies

Creative Assembly

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3 years ago

Javascript

3 years ago

How would you implement a solution to execute an array of promises one by one?

Frontend Engineer

Valve

Gamigo

Mailchimp

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3 years ago

Behavioral

3 years ago

What's your understanding of a compositing layer in CSS?

Frontend Engineer

Valve

Rovio

Tripwire Interactive

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3 years ago

Javascript

3 years ago

How would you go about manually implementing JavaScript Array.prototype methods including flat, map, reduce, and concat?

Frontend Engineer

Valve

Square

Dropbox

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3 years ago

Behavioral

3 years ago

In what ways do you implement SEO within your projects?

Frontend Engineer

Valve

Plarium

Rockstar Games

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3 years ago

Javascript

3 years ago

Can you describe the process of writing a JavaScript function to present dates in a human-readable elapsed format, including handling different time frames and localization aspects?

Frontend Engineer

Valve

Scopely

McAfee

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3 years ago

Coding

3 years ago

Could you outline a process for creating a function that flattens nested integer lists, and an asynchronous version using async/await?

Frontend Engineer

Valve

Zalando

Qualcomm

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3 years ago

Coding

3 years ago

How would you tackle the creation of a store class with set(Node, value), get(Node), and has(Node) methods for node management?

Frontend Engineer

Valve

Digital Extremes

Spotify

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3 years 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.