How to Make a Stopwatch in React

In this article, we are going to make a stopwatch in response. Like a basic stopwatch we will have a display to show the time, then we will have basic buttons for start, stop, resume and reset. As soon as we press the start button, the timer will start and two buttons stop and reset will appear. Clicking on Stop will stop the timer and a Resume button will appear. Finally, the reset button will reset the timer to 0 again.

So basically this is going to be a beginner-friendly project, so let’s build this project step by step.

Prerequisites for creating a stopwatch in React

  • Basic knowledge of ReactJS.
  • Basic knowledge of React Hooks.
  • Basic knowledge of React Props.
  • Good knowledge of React components.

create app component

Let’s start with the App.js component, we have imported the DisplayComponent.js and BtnComponent.js components to which we will add the structure for the buttons and the display. Then we also imported the usestate hook, so that we can use it to get the variable time. Now we have created state for time with initial 0 values ​​of ms, s, m, h which actually stands for milliseconds, sec, minute and hour.

Then in the return statement, we have called these two components in one div. And we have spent time as a prop. Ok so this is not for everyone for App.js we will make some changes as we progress in the application.
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Then in the return statement, we have called these two components in one div. And we have spent time as a prop. Ok so this is not for everyone for App.js we will make some changes as we progress in the application.

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