Store Subjects Lessons and Output them in List in React

To store the data or information and output them in the list using React is done by the map() function. It is used for traversing the list elements, and for updates, you can be enclosed between curly braces{}. Then finally, you can assign the array elements to list items.

What actually does the map() function?

• It returns a map object which is an iterator of the results after applying the function given to each of the items of an iterable given like a list, tuple, etc.
• Syntax: map(fun, iter).
• Parameter-fun: a function that map passes each element of a given iterable.
• Parameter-iter: an iterable which is to be mapped. We can also pass one or more iterable to the map() function.

React lists are used to display data or information in an ordered format and it is mainly used to display menus on websites. There are similar ways to create lists in React as we create lists in JavaScript. We can render a list item in React by using filter() and map() with React to filter and transform your array of data into an array of components. Things we need to do this using the curly braces in the JSX expression to output each list item. To update an object, React uses the setState() method every component in React inherits the setState() method from its Base component name component.

Here is an example of how you can store the data and output them in the list in React:

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

Code

In this solution we are using 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 the "copy" button above and paste it into the index.js file(remove the earlier code from index.js).
6. Import React and ReactDOM in the index.js file.
7. After import statement, add code for styles(refer preview of the output as well as the 'DEMO' given below).
8. Open the terminal from IDE.
9. npm start to run the file.

You can also refer to this url 'DEMO' for getting the above output.

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

I found this code snippet by searching for 'how to store subjects, lessons, urls and output them in a list in 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 Visual Studio Code 1.73.1.
2. The solution is tested on node v18.12.1 and npm v8.19.2.
3. React version-18.2.0.

Using this solution, we are able to store subjects, lessons, urls and output them in a list in 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 store subjects, lessons, urls and output them in a list in React.

Dependent Library

You can also search for any dependent libraries on kandi like 'react'.

Support

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2. For further learning resources, visit the Open Weaver Community learning page.