You have a GroceryApp class, which receives a list of products, each one with name and votes. The app should render an unordered list, with a list item for each product. Products can be upvoted or downvoted.

By appropriately using React state and props, implement the upvote/downvote logic. Keep the state in the topmost component, while the Product component should accept props.

HTML5, CSS3, React v16 
 

Run OK, but 3 out of 3 test cases fail:

  •   GroceryApp should render a list item for each product: Wrong answer
  •   Clicking on "+" button increases product votes: Exception
  •   Clicking on "-" button decreases product votes: Exception

Tags
React Components Public New
Easy

20min

Score Distribution
Loading...
Would you like to see our other questions?

We have 500+ premium hand-crafted questions for 30+ job skills and 10+ coding language. We prefer questions with small samples of actual work over academic problems or brain teasers.

Visit our question library

Private Concierge

Send us an email with an explanation of your testing needs and a list of candidates. We will create an appropriate test, invite your candidates, review their results, and send you a detailed report.


On the TestDome Blog

Screening Applicants: The Good, the Bad and the Ugly

Since we’re all biased and we use incorrect proxies, why not just outsource hiring to experts or recruitment agencies? After all, they’ve been screening people for many years, so they must know how to do it right?

Not really. I was surprised to discover that many experts disagree with each other. Everybody praises their pet method and criticises the others. Many of these methods look legitimate, but are based on...