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How to create Shopping Cart Button in ReactJS?
  • Last Updated : 05 Mar, 2021

We can create a Shopping Cart-like button with the feature of adding items count and decreasing item count in ReactJS using the following approach. Material UI for React has this component available for us, and it is very easy to integrate. 

Creating React Application And Installing Module:

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

Step 3: After creating the ReactJS application, Install the material-ui modules using the following command.



npm install @material-ui/core
npm install @material-ui/icons

Project Structure: It will look like the following.

Project Structure

Example: Now write down the following code in the App.js file. Here, App is our default component where we have written our code.

App.js




import React from "react";
import ButtonGroup from "@material-ui/core/ButtonGroup";
import Badge from "@material-ui/core/Badge";
import ShoppingCartIcon from "@material-ui/icons/ShoppingCart";
import Button from "@material-ui/core/Button";
import AddIcon from "@material-ui/icons/Add";
import RemoveIcon from "@material-ui/icons/Remove";
  
export default function App() {
  const [itemCount, setItemCount] = React.useState(1);
  
  return (
    <div style={{ display: "block", padding: 30 }}>
      <h4>How to create ShoppingCart Button in ReactJS?</h4>
      <div>
        <Badge color="secondary" badgeContent={itemCount}>
          <ShoppingCartIcon />{" "}
        </Badge>
        <ButtonGroup>
          <Button
            onClick={() => {
              setItemCount(Math.max(itemCount - 1, 0));
            }}
          >
            {" "}
            <RemoveIcon fontSize="small" />
          </Button>
          <Button
            onClick={() => {
              setItemCount(itemCount + 1);
            }}
          >
            {" "}
            <AddIcon fontSize="small" />
          </Button>
        </ButtonGroup>
      </div>
    </div>
  );
}

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.

Reference: https://material-ui.com/components/badges

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