---
title: Dropbox Front End Interview Questions
sidebar_label: Dropbox interview questions
---

:::info Latest version on GreatFrontEnd

Find the latest version of this page on [GreatFrontEnd's Dropbox Front End Interview Guide](https://www.greatfrontend.com/interviews/company/dropbox/questions-guides?utm_source=frontendinterviewhandbook&utm_medium=referral&gnrs=frontendinterviewhandbook).

:::

Dropbox focuses on practical questions for their Front End Engineering interview loop rather than on raw algorithmic coding.

> Our web developer interviews focus on practical application of HTML/CSS/JS for building web UI. The questions are based on real-world examples rather than raw coding exercises. You will be given a design spec and asked to build the best solution you can that demonstrates your experience and grasp of web development technologies.

Refer to the [full official Dropbox Web Developer Interview Preparation Guide](/guides/dropbox-web-developer-guide.pdf).

## JavaScript

- Implement [`getByClassName()` and `getByClassnameHierarchy()`](https://leetcode.com/discuss/interview-question/427896/Dropbox-or-Phone-Screen-or-Implement-getByClassName-and-getByClassnameHierarchy)
  - [Practice question](https://www.greatfrontend.com/questions/javascript/get-elements-by-class-name?utm_source=frontendinterviewhandbook&utm_medium=referral&gnrs=frontendinterviewhandbook) (Free)
- OOP-based class management system.

## User interface coding

- Build an image gallery using JavaScript, HTML, CSS.
  - [Read answer](https://www.greatfrontend.com/questions/system-design/image-carousel?utm_source=frontendinterviewhandbook&utm_medium=referral&gnrs=frontendinterviewhandbook) (Free)
- Forming words from mobile keypad.
- Build a UI that fetches data from a weather API that is matching a design spec.
- Build a UI that matches a design spec of one of the pages on the Dropbox homepage.

## System design

- Design Google calendar.

## Algorithm

- You want to log the number of hits to a site. Implement two functions, `log_hit()` which gets called when a hit is registered, and `get_hits_in_last_five_minutes()` which returns the total number of hits in the last five minutes.

_Source: [Glassdoor Dropbox Front End Developer Interview Questions](https://www.glassdoor.sg/Interview/Dropbox-Front-End-Developer-Interview-Questions-EI_IE415350.0,7_KO8,27.htm), [Glassdoor Dropbox Web Developer Interview Questions](https://www.glassdoor.sg/Interview/Dropbox-Web-Developer-Interview-Questions-EI_IE415350.0,7_KO8,21.htm?filter.jobTitleFTS=Web+Developer)_