In this project, let's build a Stopwatch by applying the concepts we have learned till now.

Refer to the image below:

Design Files

Click to view

• Extra Small (Size < 576px), Small (Size >= 576px)
• Medium (Size >= 768px), Large (Size >= 992px) and Extra Large (Size >= 1200px)

Set Up Instructions

Click to view

• Download dependencies by running npm install
• Start up the app using npm start

Completion Instructions

Functionality to be added

The app must have the following functionalities

• When the Start button is clicked, then the Stopwatch should start running
• When the Stop button is clicked, then the Stopwatch should stop running
• When the Reset button is clicked, then the Stopwatch should be reset to zero

Implementation Files

Use these files to complete the implementation:

• src/components/Stopwatch/index.js
• src/components/Stopwatch/index.css

Quick Tips

Click to view

• You can use the box-shadow CSS property to apply the box-shadow effect to containers

    box-shadow: 0px 4px 16px 0px #bfbfbf;
  

  
  

• You can use Math.floor() function that returns the largest integer less than or equal to a given number

  console.log(Math.floor(5.95)); // output: 5

Resources

Image URLs

• https://assets.ccbp.in/frontend/react-js/stopwatch-timer.png alt should be stopwatch
• https://assets.ccbp.in/frontend/react-js/stopwatch-sm-bg.png
• https://assets.ccbp.in/frontend/react-js/stopwatch-lg-bg.png

Colors

Hex: #ffffff

Hex: #333333

Hex: #1db05f

Hex: #ef0d36

Hex: #eaa800

Font-families

• Roboto

Things to Keep in Mind

• All components you implement should go in the src/components directory.
• Don't change the component folder names as those are the files being imported into the tests.
• Do not remove the pre-filled code
• Want to quickly review some of the concepts you’ve been learning? Take a look at the Cheat Sheets.