How to create new elements with ReactJS mapping props ?
If we want to create new elements/components using mapping props then we can use the map() function. The map() method creates a new array populated with the results of calling a provided function on every element in the calling array.
Following is the example of the map method:
// Sample array const array1 = [1, 4, 9, 16]; // Pass a function to map const map1 = array1.map(x => x * 2); console.log(map1); // Expected output: Array [2, 8, 18, 32]
We are multiplying each element by two in the same way we can also create elements of each value using the map function.
Creating React Application:
Step 1: Create a React application using the following command:
npx create-react-app foldername
Step 2: After creating your project folder i.e. foldername, move to it using the following command:
Project Structure: It will look like the following.
Example: Now write down the following code in the App.js file. Here, App is our default component where we have written our code.
Step to Run Application: Run the application using the following command from the root directory of the project:
Output: Now open your browser and go to http://localhost:3000/, you will see the following output: