Display digital clock using React

We can create Digital Clock using the class Date in Reactjs. Digital Clock should update the state variable time with the current Time when Digital Clock is mounted. This Digital Clock always updates the time variable at an interval of 1 sec or 1000ms. If the component is already placed in the DOM (Document Object Model), the componentDidMount() method allows us to execute the React code. This method is called after the component is rendered (during the Mounting phase of the React Life-cycle). When the component gets destroyed or unmounted from the DOM (Document Object Model), the componentWillUnmount() method allows us to execute the React code. This method is called before the component gets unmounted (during the Unmounting phase of the React Life-cycle).The clearInterval() method clears a timer set with the setInterval() method. 

The Date constructor function stores the current date and time. The next function gives such a date object. The toLocaleTimeString method returns a localized string representation of the time portion of the date. The default locale is used when no argument is passed to the function. this.state will retrieve the time from the state. 

The setInterval calls the given callback function at the specified intervals (in milliseconds). The timer created by the setInterval utility runs until the clearInterval utility function is called. The id value returned by setInterval is used as the argument for the clearInterval function. We have to create new Date objects every second. 

Acceptance Criteria 

• Use of JavaScript class Date. 
• Update Digital Clock Every second. 
• Terminate Digital Clock on unmounting. 
• The main div should have the class name ‘Clock’. 
• We have to create an h3 tag element inside the main div with the id ‘time’. 

Time Format 

• 1:13:53 PM 
• HH:MM:SS{space}PM 
• HH:MM:SS{space}AM 

Here is an example of how to display a digital clock using Reactjs: 

Preview of the output that you will get on running this code from your IDE.

Code:

In this solution we use the React library.

Instructions

Follow the steps carefully to get the output easily.

1. Install the Node.js and React on your IDE(preferable Visual Studio Code).
2. Create React Application using npx create-react-app foldername.
3. cd foldername.
4. Open the folder in IDE.
5. Copy the code using "copy" button above and paste it in App.js file(remove the earlier code from App.js).
6. Import React library.
7. Add export default ClockFunction to the last line of the code.
8. Open the terminal from IDE.
9. npm start to run the file.

I hope you found this useful. I have added the link to dependent libraries, version information in the following sections.

I found this code snippet by searching for Display digital clock using React in kandi. You can try any such use case!

Environment Tested

I tested this solution in the following versions. Be mindful of changes when working with other versions.

1. The solution is created in VS Code 1.73.1 version.
2. The solution is tested on Nodejs 16.14.2 version.
3. react 18.2.0 version.

Using this solution, we are able to Display digital clock using React with simple steps. This process also facilities an easy way to use, hassle-free method to create a hands-on working version of code which would help us to Display digital clock using React

Dependent Libraries

You can search for any dependent library on kandi like react.

Support

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