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How to create new elements with ReactJS mapping props ?

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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 = => x * 2);

// 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:

    cd foldername

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.


import React from 'react'
class App extends React.Component {
  getComponent = (arr) => {
    return => (
      <button key={value} onClick={() => {
        alert("button " + value + " is clicked")
      }}>{value} </button>
  render() {
    const components = this.getComponent([1, 2, 3, 4, 5]);
    return (
export default App;

Step to Run Application: Run the application using the following command from the root directory of the project:

npm start

Output: Now open your browser and go to http://localhost:3000/, you will see the following output:

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Last Updated : 30 Apr, 2021
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