How to Integrate PayPal Payment Gateway in Node js

Jason S

Here are the steps to integrate PayPal payment gateway in Node.js:

  1. Create a PayPal account if you don't already have one.
  2. Create a sandbox account to test the integration.
  3. Install the PayPal SDK in your Node.js project using npm:
npm install paypal-rest-sdk
  1. Require the SDK in your Node.js code:
const paypal = require('paypal-rest-sdk');
  1. Configure the SDK with your PayPal credentials:
paypal.configure({
  mode: 'sandbox', // or 'live' for production
  client_id: 'YOUR_CLIENT_ID',
  client_secret: 'YOUR_CLIENT_SECRET'
});
  1. Create a payment:
const create_payment_json = {
    "intent": "sale",
    "payer": {
        "payment_method": "paypal"
    },
    "redirect_urls": {
        "return_url": "http://return.url",
        "cancel_url": "http://cancel.url"
    },
    "transactions": [{
        "item_list": {
            "items": [{
                "name": "item",
                "sku": "item",
                "price": "1.00",
                "currency": "USD",
                "quantity": 1
            }]
        },
        "amount": {
            "currency": "USD",
            "total": "1.00"
        },
        "description": "This is the payment description."
    }]
};

paypal.payment.create(create_payment_json, function (error, payment) {
    if (error) {
        throw error;
    } else {
        console.log("Create Payment Response");
        console.log(payment);
    }
});
  1. Execute the payment:
const execute_payment_json = {
    "payer_id": "payer_id",
    "transactions": [{
        "amount": {
            "currency": "USD",
            "total": "1.00"
        }
    }]
};

paypal.payment.execute(paymentId, execute_payment_json, function (error, payment) {
    if (error) {
        console.log(error.response);
        throw error;
    } else {
        console.log("Get Payment Response");
        console.log(JSON.stringify(payment));
    }
}); 

This is a basic example to get you started. You may need to modify the code to meet the requirements of your specific use case.